Category Archives: Pressure

Pressure Transducers and Transmitters Manfacturer, China

A pressure transducer also called a pressure transmitter,

is a transducer that converts pressure into an analog electrical signal.

Pressure transmitters are used to measure the pressure,

or level of industrial liquids and gases.

The output is transmitted to a control system.

Accurate and stable process measurements ensure the safe,

reliable, and profitable operation of your plant.

Sino-Instrument is pressure transmitters manufacturer in China.

We offer all types of pressure transmitters.

Like Direct Mounted, flange-mounted, single flange,

double flange, Remote Diaphragm Seals, High Static, Digital Remote.

Most of our pressure transmitters are used in oil, liquids,

DP transmitter, flow measurement, level measurement, density,

and other process variables.

Pressure transducers are generally available with three types of electrical output;

millivolt, amplified voltage, and 4-20mA.

4-20 mA Output Pressure Transducers

These types of transducers are also known as pressure transmitters,

work with HART communicators.

Since a 4-20mA signal is least affected by electrical noise,

and resistance in the signal wires,

these transducers are best used when the signal must be transmitted long distances.

It is not uncommon to use these transducers in applications where the lead wire must be 1000 feet or more.

Choose the right pressure transducer for your application:

SI-350 Sanitary Pressure Transmitter

Posted on July 9, 2019 by KimGuo11

Sanitary Pressure Transmitter is also called a Hygienic pressure sensor or tri-clamp pressure transmitter. Sanitary Pressure Transmitter is used for food &beverage or pharmaceutical application.

Sanitary Pressure Transmitter, also called tri-clamp pressure transmitter. It is the pressure transducer with the flush diaphragm (flat membrane) as the pressure sensor. Sanitary Pressure Transmitter uses a flat membrane to directly sense the pressure. The sensor interface is available in clamp type, M27 × 2, and flange type.

The sanitary pressure transmitter is designed especially for the requirements of the food and beverage, pharmaceutical and biotechnology industries.
It is particularly suitable for the special conditions of CIP/SIP cleaning processes. Such as chemical stability towards cleaning liquids and high temperatures

Sino-Inst offers a variety of Sanitary Pressure Transmitters for industrial pressure measurement. If you have any questions, please contact our sales engineers.

More Pressure Transmitters

Features of Sanitary Pressure Transmitter

Pressure interface with 316L flat diaphragm structure
Hygienic, anti-fouling
Wide measuring range for absolute pressure, gauge pressure and sealed reference pressure
Good sealing and stable work for a long time
With heat sink, high temperature media application performance
Output signal can be selected, can be customized according to customer requirements

No Liquid Fill Diaphragm, Sanitary Clamp Fitting

The SI-350 sanitary pressure transmitter uses a flat membrane to directly sense the pressure signal. The diffused silicon pressure core acts as a sensitive component. Standard silicone oil is used as the pressure transmission medium.

The measuring end is made of 316L stainless steel and is specially welded and processed. Compact structure, corrosion resistance, vibration resistance, and wide temperature compensation.

SI-350 Sanitary Pressure Transmitter Type prevents fouling, unsanitary and sticky pressure blocking. Due to the pressure felt directly at the exposed end of the threaded diaphragm. It is particularly suitable for pressure measurement of viscous fluids with hygienic requirements in the medical and food industries.
Widely used in food, medicine, brewing, and other health industries. And stress tests that can scale the measurement medium.

Specifications of SI-350 Sanitary Pressure Transmitter

Model	Description
350-02	Sanitary pressure transmitter, range 0- 10kPa, 300％FS overpressure, 2″ sanitary clamp connection.
350-101	Sanitary pressure transmitter, range 0- 20kPa, 300％FS overpressure, 1-1/2″ sanitary clamp connection.
350-12	Sanitary pressure transmitter, range 0- 400kPa, 200％FS overpressure, 2″ sanitary clamp connection.
350-22	Sanitary pressure transmitter, range 0- 600kPa, 200％FS overpressure, 2″ sanitary clamp connection.
350-32	Sanitary pressure transmitter, range 0-1MPa, 200％FS overpressure, 2″ sanitary clamp connection.
350-42	Sanitary pressure transmitter, range 0-1.6MPa, 200％FS overpressure, 2″ sanitary clamp connection.
350-52	Sanitary pressure transmitter, range 0-2.5MPa, 200％FS overpressure, 2″ sanitary clamp connection.
350-62	Sanitary pressure transmitter, range 0-6MPa, 150％FS overpressure, 2″ sanitary clamp connection.
350-72	Sanitary pressure transmitter, range 0-10MPa, 150％FS overpressure, 2″ sanitary clamp connection.

Range range	-100kPa…0~10kPa…10MPa
Pressure type	gauge pressure, absolute pressure, sealing pressure
Power output	4 to 20 mA (12 to 30 VDC) 0 to 5V, 1 to 5V, 0.5 to 4.5V, 0 to 10V (12 to 24VDC)
Accuracy	0.5% FS
Hysteresis and repeatability	0.1%FS
Temperature drift	1.5% FS (@-20 °C ~ 85 °C)
Response time	≤ 1ms (up to 90% FS)
Service life	≥10x 10^6 pressure cycle
Working temperature	-20 ° C ~ 85 ° C
Storage temperature	-40 ° C ~ 85 ° C
Medium temperature	-40～85°C (without heat sink) -40～150°C (three heat sinks), -40°C～250°C (five heat sinks)
Insulation resistance	≥100MΩ/250VDC
Vibration resistance	Sinusoidal: 20g, 25Hz~2kHz; IEC 60068-2-6 Random: 7.5grms, 5Hz ~ 1kHz; IEC 60068-2-64
Protection level	IP65
Media compatible	with a variety of media compatible with 316L stainless steel
Explosion-proof grade	Intrinsically safe explosion-proof ExiaIICT6

Guess You’ll Like: Explosion Proof Pressure Transmitter

Applications of Sanitary Pressure Transmitter

Ideal for applications where sanitary conditions are of high priority (i.e. dairy, food processing, pharmaceutical, etc.)

Medical and health, food, wine, dairy, beverages, etc. thick and easy to block, high hygienic requirements, easy to clean occasions.

Environmentally friendly chemical coatings, polyurethane equipment, paint inspection systems, etc.

Extended reading: Vortex Hygienic Flow Meter

Sanitary process applications
Food and beverage processing
Water processing
Dairy processing
Pharmaceutical processing

Extended reading: Food grade flow meters for Food & Beverage industry

Drawing of SI-350 Sanitary Pressure Transmitter

More Featured Pressure Transmitters

**Diaphragm Seal Pressure Transmitter**
When the process medium should not come into contact with the pressured parts of the measuring instrument. Diaphragm sealed pressure transmitters are used.

**SI-303 Low-Pressure Transducer**
Low pressure transducers for air and non-corrosive gases low pressure measurement. 0 ～ 2.5kPa to 0 ～ 30kPa measurable.

**SI-703 Flush diaphragm pressure sensor**
Flush membrane / diaphragm structure, anti-blocking design. Pressure measurement of viscous media.

**SI-10 Liquid pressure sensor**
Liquid pressure sensor is widely used for pressure measurement of various liquids. Like water or oils. IP68 waterproof.

**SI-503K Gas Pressure Sensor**
Gas pressure sensor for industrial gas pressure monitoring. Pagoda gas nozzle Φ8. Such sensors are also commonly referred to as wind pressure transmitters, exhaust pressure sensors.

**SI-702 High Pressure Sensor**
High pressure sensor is pressure transmitter designed for high pressure measure&control. 0 ～ 40MPa… 600MPa. M20 × 1.5, G1 / 2 (others are customized according to requirements)

**SI-702S Ultra-High Pressure Senors**
Pressure sensor for Ultra high pressure applications. Ultra high pressures up to 15,00MPa. 0-2000MPa to 0-7000MPa (customized).Ball head M20 × 1.5, cone head M20 × 1.5.

**High-Temperature Pressure Transmitter**
High-temperature pressure transmitters with a 4-20mA output.
which has a temperature capability of over 850 °C and is not pyroelectric.

Technical Support

Flush diaphragm pressure transducer

Flush diaphragm pressure sensor uses a diaphragm isolation process. Feel the pressure directly with a flat membrane. There is no pressure hole in the test head. There is no clogging of viscous media during the measurement. Adopting flush membrane structure, diffused silicon pressure-sensitive core body, with good moisture resistance and excellent media compatibility. The sensor interface is available in clamp, thread and flange options. The output signal can be selected from voltage, current, and so on. The flush diaphragm of the sensor prevents problems such as scaling, unsanitary and clogging of viscous liquids.

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Steam pressure transmitter

High Temperature Pressure Transducer/Transmitter works for steam and fluid. Temperature: -30 ℃ ～ 160-350 ℃, customized up to 850 ° C. It is possible to fit a stand off pipe, pigtail or other cooling device to reduce the media temperature. If not, High Temperature Pressure Transducer/Transmitter is the best choice. The pressure is transmitted to the sensor through the heat dissipation structure on the transmitter. The high-precision signal processing circuit is located in the stainless steel housing. The sensor output signal is converted to standard output signal, like 4-20mA.

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High pressure transducer

The sino-Inst high-pressure transducer has gone through thousands of fatigue impact tests and several days of low and medium temperature aging cycles before leaving the factory. It has solved the disadvantages of high-pressure sensors in terms of stress and zero instability. Provide customers with reliable products for high voltage measurement. The pressure of the SI-702 series can reach 600MPa. The precision level is high, and the mature production technology can ensure the long-term stability of the sensor with excellent characteristics. SI-702 series pressure sensors are suitable for oil extraction platforms, water flow equipment, high-pressure measurement equipment, hydraulic control systems, test benches, and industrial automation control.

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Pressure Transducer 4-20mA/Voltage

The signal system of 4-20mA and 1-5V output by the pressure transmitter is stipulated by international standards.In the signal circuit, the pressure transmitter is equivalent to a variable resistor. It is connected in series with the power supply, ammeter (indicator), and load resistance (including wire resistance). The function of the pressure transmitter is to change the current in the circuit in the range of 4-20mA by changing its own resistance according to requirements.The pressure acts on the sensor, and the sensitive element deforms. The deformation will cause the resistance or capacitance value to change. And then it will be converted into an analog 4-20mA output by the conversion circuit.

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Industrial Pressure Sensors

https://www.drurylandetheatre.com/industrial-process-pressure-transmitters/

Other Sanitary Instruments

Sanitary Bimetal Thermometers also called the sanitary thermometer, or tri-clamp thermometer.

Sino-Instrument’s Sanitary Bimetal Thermometers are specially designed for direct insertion into sanitary process applications when a standard thermowell is not specified, or the process environment is not exposed to pressure.

View Details

Sanitary Flow Meter, also called sanitary turbine flow meter or Hygienic turbine flowmeter.

The Sino-Instrument sanitary turbine flow meter, food grade flow meter, provides accuracy, versatility, and economy, in measuring a wide variety of food, beverage and pharmaceutical products.

View Details

All of Sino-Inst pressure transmitters can work with the AMS TREX!

FAQ

What is pressure transmitter how it works?

Pressure Transmitters are sensors with electrical transmission output for remote indication of pressure. Process transmitters differentiate themselves from pressure sensors through their increased range of functionality. They feature integrated displays, offer high measuring accuracies and freely scalable measuring ranges. Communication is via digital signals, and waterproof and explosion-proof certifications are available. Through connection to diaphragm seals, they are suitable for the harshest operating conditions. Ideal for OEMs, process applications, water processing, and industrial pressure applications.

What is the input of the pressure transmitter?

A pressure transmitter is an instrument that converts pressure variables into a standardized output signal that can be transmitted. And there is a given continuous function relationship between the output signal and the pressure variable (usually a linear function). Mainly used for measurement and control of industrial engineering pressure parameters. Differential pressure transmitters are often used for flow measurement.
There are two types of pressure transmitters, electric and pneumatic. The electric standardized output signals are mainly 0mA ~ 10mA and 4mA ~ 20mA (or 1V ~ 5V) DC signals.

How do you calibrate a pressure transmitter?

If the transmitter is used for a period of time, it may cause a change in metering performance. There will be zero drift and increased measurement error. Therefore, it is necessary to perform regular calibration. The accuracy of the calibrator used for calibration should be more than 3 times the required calibration accuracy. Use the pressure calibrator to input the standard pressure values of 0%, 25%, 50%, 75%, and 100% of the range to the transmitter in the forward and reverse directions. Check whether the current output signal is within the allowable accuracy range. If it is out of tolerance, it needs to be adjusted. The adjustment method is as follows (4 ~ 20mA output):
(1) Input a standard pressure of 4mA with a pressure calibrator. Adjust the ZERO (zero) potentiometer. Make the 4mA current output within the accuracy range.
(2) Input a standard pressure of 20mA with a pressure calibrator. Adjust the SPAN (range) potentiometer. Make the 20mA current output within the accuracy range.
(3) ZERO and SPAN will contain each other. Repeat steps (1) (2) until the current output of 4mA point and 20mA point meets the accuracy requirements at the same time. Then check whether the current output of the 25%, 50%, 75% range points meets the accuracy requirements. The transmitter is qualified if it meets the requirements.

What are the types of pressure transmitters?

There are different types of pressure transducers based on their design.
These sensors can come in several shapes and sizes,
but the technology inside can also differ.
There 4 main types of pressure sensors based on this:
Strain Gauge Pressure Transducers
Capacitance Pressure Transducers
Potentiometric Pressure Transducers
Resonant Wire Pressure Transducers
More about Industrial Pressure Sensors

Sino-Instrument offers over 10 Sanitary Pressure Transmitters.

About 50% of these are 4-20ma pressure transmitters, 40% are Differential Pressure Gauge. And 20% are Diaphragm Seal Pressure transmitters. 20% are 4-20ma pressure transducer wiring diagrams.

A wide variety of Sanitary Pressure Transmitter options are available to you, such as free samples, paid samples.

Sino-Instrument is a globally recognized supplier and manufacturer of Sanitary Pressure Transmitters, located in China.

The top supplying country is China (Mainland), which supply 100% of Sanitary Pressure Transmitters respectively.

Sino-Instrument sells through a mature distribution network that reaches all 50 states and 30 countries worldwide.

Sanitary Pressure Transmitter products are most popular in Domestic Market, Southeast Asia, and Mid East.

You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.

Request a Quote

KimGuo11

Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.

Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.

drurylandetheatre.com

SI-300 Pressure Transducer 4-20mA/Voltage

Posted on July 9, 2019 by KimGuo11

Pressure transmitters convert pressure signal into 4 ～ 20mA DC, 0-5V, 0-10V signal output.

Sino-Inst offers a variety of 4-20mA pressure senors for industrial pressure measurement. If you have any questions, please contact our sales engineers.

The SI-300 4-20mA/Voltage Pressure Transducer, also called pressure transmitter 4-20mA. It is a pressure sensor with 4-20ma/Voltage output.

4-20mA Pressure Transducer can be OEM as differential pressure, explosion-proof, or sanitary, just as you need.Ideal for OEMs, process applications, water processing, and industrial pressure applications.

Features of SI-300 Pressure Transducer 4-20mA/Voltage

Sensor Type : Industrial Pressure Transducers
Pressure Range : 0 – 25 to 14000 psi
Output/Span : .5 – 4.5 V, .5 – 4.5 V, 1 – 5 V, 1 – 6 V, 10 mV/V, 4 – 20 mA
Type : Compound, Gage, Sealed
Accuracy : ±0.5% FSO

All of our pressure transmitters can work with the new AMS TREX

Specifications of SI-300 Pressure Transducer 4-20mA/Voltage

Range range	-100kPa…0~10kPa…100MPa (14000psi)
Pressure type	Gauge pressure, absolute pressure, sealing pressure
Power supply	24V, 12V
Output signal	4~20mA, 1~5V, 0~10V
Working temperature	-20 ° C ~ 85 ° C
Medium temperature	-20 ° C ~ 85 ° C
Storage temperature	-40 ° C ~ 125 ° C
Zero temperature drift	±1.5% FS (@-20°C～85°C)
Sensitivity temperature drift	±1.5%FS (@-20°C～85°C)
Overload pressure	150% FS
Mechanical vibration	20g (20～5000HZ)
Impact	100g (11ms)
Comprehensive accuracy	0.5, 0.3 optional
Insulation	100MΩ /250VDC
Response time	≤ 1ms (up to 90% FS)
Long-term stability	±0.2%FS/year
EMC Surge	(IEC61000-4-5) 2KV
EMC static	(IEC61000-4-2) contact discharge 8KV, air discharge 15KV
Protection level	IP65
Explosion-proof grade	Intrinsically safe explosion-proof ExiaIICT4
Material Housing	stainless steel; isolation diaphragm 316L
Media compatible	with a variety of media compatible with 316L stainless steel

Read more about: What Is 0-10V Signal Output?

Applications of Pressure Transmitter 4-20mA

Industrial OEM Equipment
Water Management
Pneumatics
Hydrogen Storage
Sub Sea Pressure
HVAC/R Equipment
Control Panels
Hydraulic Systems
Data Loggers

Extended reading: How to convert a 4-20mA to 0-10V /1-5V signal?

Drawings of SI-300 Pressure Transducer 4-20mA/Voltage

4-20ma pressure transducer wiring diagram

We offer OEM and Reseller Discounts for all kinds of 4-20mA pressure transducer

4-20ma differential pressure transmitter

The Smart Differential Pressure transmitter is upgraded **differential pressure transmitter**, which can work **with display, HART communicators, and 4-20mA output**. **SMT3151DP smart differential pressure transmitters** can be used for **differential pressure measurement.**

Diaphragm seals 4-20ma pressure transducer

Diaphragm seals are used to prevent process medium,
from entering into the pressure-sensing assembly of the **Differential pressure, Gauge pressure,**
orAbsolute pressure transmitter.

Industrial Pressure Transmitter

Submersible Pressure Transducer 4-20mA

**Submersible pressure transducer with 4-20mA output,**
is normal **submersible pressure transmitter** for **level measurement.**
Sino-Instrument Hydrostatic submersed level transducers are sensors,
with an electrical transmission output for indication of liquid level.

What is a 4-20mA Current Loop?

The 4-20 mA current loop is a process control signal commonly used in many industries.

This is an ideal method for transmitting process information. Because the current does not change when it flows from the transmitter to the receiver. It is also simpler and cost-effective. However, the number of voltage drops and process variables that need to be monitored can affect their cost and complexity.

By understanding these basics, you will be able to make more informed decisions about process control in your facility. This may affect your bottom line.

In order to understand what a 4-20 mA direct current (DC) loop is and how it works, we need to understand some math. Don’t worry we won’t study any advanced electrical engineering formulas.

In fact, the formula we need is relatively simple:
V = I x R This is Ohm’s law.

This means that the voltage (V) is equal to the current (I) times the resistance (R) (“I” stands for Intensitéde Courant, French for Current Intensity).
This is the basic equation in electrical engineering.
Consider the simple DC circuit above, which consists of one power supply and three loads.
The current loop requires voltage to drive the current. This is powered by the {PART 1} 12 power supply, which is labeled Vtot. Current then flows through the loop through each load. The voltage drop of each load can be calculated according to Ohm’s law.
The voltage drop V1 across R1 is:
Each element in the loop provides a voltage or has a voltage drop. However, currently, everything is the same in the loop.

This is the key principle of the 4-20 mA loop. The current is the same everywhere in the entire circuit.
It may be difficult to understand why the current stays constant, so compare your home’s water supply system.

There is a certain pressure in the water pipes that pushes the water towards the house. Voltage acts in a similar manner as pressure, pushing current through the circuit.
When the faucet in your home is turned on, the water runs down. The flow of water is similar to the flow of electrons or electricity. The ability of pressure to force water through a pipe is limited by the bending and restraint of the pipe. These limits limit the flow in the pipeline, similar to how resistors limit current.

Even if the pressure and voltage drop at various points, the flow through the pipeline and the current through the wires remain constant throughout the system.

This is why the use of current as a method of transmitting process information is so reliable.

Components of a 4-20 mA Loop

1. Sensor
2. Transmitter
3. Power Source
4. Loop
5. Receiver

Why we use the 4 20mA in transmitting signal?

Why is it 4/20 mA?

The reason for using a current signal is that it is less susceptible to interference. And the internal resistance of the current source is infinite. The wire resistance is connected in series in the loop without affecting the accuracy. And it can be transmitted over ordinary twisted pairs for hundreds of meters.

Due to explosion protection requirements, the upper limit is 20 mA: the spark energy caused by a current interruption of 20 mA is not sufficient to ignite the gas.

The reason why the lower limit is not set to 0mA is to detect a disconnection. During normal operation, the value will not be lower than 4mA. And when the transmission line is disconnected due to a fault, the loop current will drop to 0.

Usually, 20mA is used as the disconnection alarm value. There are two more reasons.
One reason is to avoid interference.
Another reason is that the two-wire system uses 4-20 mA of current. That is, the two wires are the signal line and the power line. The 4 mA is used to provide the quiescent operating current of the circuit for the sensor.

Extended reading: Smart Differential Pressure Transmitter

Pressure transmitter 4-20ma price

First of all, the parameters that must be seen when purchasing a pressure transmitter are:
Pressure range. Range. Measurement medium. Installation method-threaded flange clamps, etc. Installation dimensions. Temperature. Whether with display. Whether with HART protocol. Output type. Current output or voltage output. Explosion-proof level, protection level. Accessories. Mounting bracket.
The above parameters will affect the price of the pressure transmitter.
Sino-Inst, as the manufacturer of pressure transmitter, offer you with the best price.

Q&A

What does a pressure transducer do?

A pressure transducer is a device or device that can sense the pressure signal and convert the pressure signal into a usable output electrical signal according to a certain rule.
A pressure transducer usually consists of a pressure-sensitive element and a signal processing unit. According to different test pressure types, pressure sensors can be divided into gauge pressure sensors, differential pressure sensors and absolute pressure sensors.
Pressure transducer is the most commonly used sensor in industrial practice. It is widely used in various industrial automatic control environments, including water conservancy and hydropower, railway transportation, intelligent buildings, production automatic control, aerospace, military, petrochemical, oil wells, electricity, ships, machine tools , Pipelines and many other industries.

How do you test a 4 20ma pressure transducer?

Pressure transducer is a commonly used pressure instrument, which has certain applications in many industries. When a user detects a pressure transducer, the detection items are different depending on the purpose. Of course, the detection methods will be different. I will introduce 3 common methods for pressure transducer detection, and I hope it can help everyone.
1. Pressure test.
The detection method is: power the sensor. Use your mouth to blow the air holes of the pressure sensor. Use the multimeter’s voltage range to detect the voltage change at the output of the sensor. If the relative sensitivity of the pressure sensor is large, this amount of change will be significant. If nothing has changed, you need to use a pneumatic source instead.
Through the above methods, the condition of a sensor can be basically detected. If accurate testing is required, a standard pressure source is required. Apply pressure to the sensor and calibrate the sensor according to the pressure and the change of the output signal. When conditions permit, temperature detection of relevant parameters is performed.
2. Detection of zero point.
Use the multimeter’s voltage range. Detects the zero output of the sensor without applying pressure. This output is typically a mV level voltage. If it exceeds the sensor specifications. It means that the zero deviation of the sensor is out of range.
3. Detection of bridges.
The main test circuit of the sensor is correct. It is generally a Wheatstone full-bridge circuit, which uses the ohm range of a multimeter to measure the impedance between the input terminals and the impedance between the output terminals. These two impedances are the input and output impedances of the pressure sensor. If the impedance is infinite, the bridge is disconnected. It indicates that there is a problem with the sensor or the definition of the pins is not judged correctly.

What is a low pressure transducer?

Low pressure transducers for air and non-corrosive gases low pressure measurement.
Low pressure transducers also called low pressure transmitters. Sino-Inst offers High-precision low-pressure pressure transducers. 0 ～ 2.5kPa to 0 ～ 30kPa measurable. Low pressure transducer converts the measured pressure into an accurate electrical signal. This process is achieved through a high-performance amplifier circuit. The unique design of this product makes it unique in terms of environmental resistance. It is less affected by temperature changes. Anti-vibration With good long-term stability. Low pressure tranducers are suitable for applicaitons like: Liquid level. Flood warning. Waste water. Clean room. And open channel flow applications.
More about low pressure transducer.

What is the difference between transmitter and transducer?

A pressure sensor is a device or device that can sense a pressure signal and convert the pressure signal into a usable output electrical signal according to a certain rule.
A pressure sensor usually consists of a pressure-sensitive element and a signal processing unit. According to different test pressure types, pressure sensors can be divided into gauge pressure sensors, differential pressure sensors and absolute pressure sensors. A pressure sensor is the core part of pressure transmitter.
In a pressure transducer, a thin-film or piezo-resistive pressure sensor is mounted on a process connection. The transducer converts pressure into an analog electronic output signal, typically as a millivolt per volt output. These signals are not linearized or temperature compensated.
A pressure transmitter has additional circuitry that linearizes, compensates, and amplifies the signal from a transducer. The different signal types are typically voltage signals (eg, 0 to 5 or 0 to 10 volts), milliamp (eg, 4 to 20 milliamp), or digital. The instrument then can transmit the signal to a remote receiver.

Sino-Instrument offers over 50 pressure transducers 4-20mA/Voltage.

About 50% of these are 4-20ma differential pressure transmitters, 40% are Differential Pressure Gauge, and 20% are Diaphragm Seal Pressure transmitters, 20% are 4-20ma pressure transducer wiring diagram.

A wide variety of pressure transducers 4-20mA options are available to you, such as free samples, paid samples.

Sino-Instrument is a globally recognized supplier and manufacturer of pressure transducers 4-20mA, located in China.

The top supplying country is China (Mainland), which supply 100% of
pressure transducers 4-20mA respectively.

Sino-Instrument sells through a mature distribution network that reaches all 50 states and 30 countries worldwide.

Pressure Transducer 4-20mA/Voltage products are most popular in Domestic Market, Southeast Asia, and Mid East.

You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.

Current Output, 4 – 20 mA Transmitters

KimGuo11

drurylandetheatre.com

SI-390 General Purpose Industrial Pressure Transducer

Posted on July 5, 2019 by KimGuo11

Industrial pressure transducers are essential devices in various industrial processes. They are designed to convert a liquid or gas(air) pressure into an electrical signal, which can be used to measure or control different industrial applications. SI-390 General Precision Industrial help improve the efficiency and reliability of various industrial processes. Support OEM.

RFQ More Pressure Sensors

Features
Specifications
Drawings

Features of SI-390 Industrial Pressure Transducer

Compact structure and easy installation.
Advanced diaphragm / oil-filled isolation technology.
High stability and high reliability.
Resistant to vibration and radio frequency interference.
316L stainless steel isolation diaphragm structure.
High precision, all stainless steel structure.
Miniature amplifier, voltage and current signal output.
Strong anti-interference and long-term stability.
Forms and structures are diversified and easy to install and use.
Wide measuring range, which can measure absolute pressure, gauge pressure and sealed vacuum pressure.
Resistant to vibration and shock.
Zero and full range can be adjusted.

Specifications of SI-390 Industrial Pressure Transducer

Measuring medium: various liquids, gases or vapors compatible with 316L stainless steel
Measuring range: -0.1kPa ~ 0 ~ 0.01kPa ~ 100MPa
Overload: 1.5 times full scale pressure or 110 MPa (minimum value)
Pressure type: gauge pressure, absolute pressure, sealed reference pressure
Power supply: 15~30VDC 15~28 VDC 15~28 VDC
Output signal: 4~20mADC 0~10/20 mADC 0/1~5/10VDC
Transmission method: two-wire system; three-wire system; three-wire system:
Accuracy: Typical: ±0.25% FS Maximum: ±0.5% FS
- (including nonlinearity, hysteresis, and repeatability)
Long-term stability: Typical: ±0.1%FS Maximum: ±0.2%FS
Zero temperature coefficient: 0.03% FS / ° C (≤ 100kPa) 0.02% FS / ° C (> 100kPa)
Full temperature coefficient: 0.03% FS / ° C (≤ 100kPa) 0.02% FS / ° C (> 100kPa)
Working temperature: -30~ 80°C
Storage temperature: -40～100°C
Load resistance: ≤ (U-15) / 0.02Ω
Electrical connection: cable connection, aviation hoe, Hessmann components
Housing material: stainless steel 1Cr18Ni9Ti
Process interface: M12×1 N20×1.5 or G 1/4 external thread
Protection level: IP65
Explosion-proof mark: ExiaIICT6 (intrinsic safety explosion-proof type)

Drawings of SI-390 Industrial Pressure Transducer

Industrial Pressure Transmitter drawings

What is the pressure transducer?

Pressure transducer/transmitter is a device that converts pressure into pneumatic signal or electric signal for control and remote transmission.

It can convert the gas, liquid and other physical pressure parameters felt by the load cell sensor into a standard electrical signal (such as 4-20mADC, etc.). Use secondary instruments such as indicator alarms, recorders, and regulators for measurement, indication, and process adjustment.

Industrial Pressure Transmitters are precision-engineered to fit most industrial pressure measurement applications. Sino-Instrument offers industrial pressure transmitters with the display, 4-20ma output.

The industrial pressure transmitter can work as a natural gas pressure transducer, water pressure transmitter.

The piezoresistive pressure transmitter uses an advanced micromechanical etching process. By diffusing four high-precision resistors with temperature compensation on the silicon wafer. Form a Wheatstone bridge. Due to the piezoresistive effect, the resistance values of the four bridge arm resistors change. The bridge is out of balance. The sensitive element outputs an electrical signal corresponding to a pressure change. The output electrical signal is amplified by the compensation of the non-linear correction circuit to generate a voltage and current signal that has a linear correspondence with the input pressure.

It uses a programmable KELLER-ASIC chip called a “programmable resistor.” The “programmable resistance” chip allows the transmitter to be installed and calibrated with automatic test equipment to improve product quality and reduce costs.

The transmitter uses 6SC series bellows. The piezoresistive silicon pressure sensor is housed in an oil-filled capsule. The dielectric voltage is isolated by the stainless steel diaphragm and transmitted to the wafer through the oil-filled liquid.The sealed pressure gauge has a TAB (Automatically Insulated Tape) sensor. The sensor floats freely in oil to ensure stability and durability.The “programmable resistor” line has a network of programmable resistors. The network adjusts the zero / gain and temperature coefficients.

All SI-390 series transmitters undergo pressure and temperature cycle compensation test procedures. At the end of the compensation test, various parameters are automatically calibrated. And adjusted by computer-controlled test equipment. A final inspection is then carried out and results are obtained. Check if it is correct. The adjustment position is correct and meets the requirements.

The transmitter is very reliable and economical. It is suitable for process control and pressure measurement in petroleum, chemical, metallurgy, power, light industry, textile, building materials, hydrogeology, food, medicine, environmental control, papermaking, and other industries.

SI-390 Industrial Pressure Transmitter is used for process control in the petrochemical, chemical and HVAC industries. They allow measurement results to be transmitted to the control center.The compact, rugged design makes these instruments suitable for a variety of applications. Including hydraulic and pneumatic, vacuum, test equipment. Level measurement, pressure control, compressor control, pump protection and many other processing and control operations. A wide range of electrical and process connection options can meet almost all requirements.

Hydraulics and pneumatics
Test equipment
Pump and compressor control
Liquid level measurement
Off-road equipment
Compressor control
Industrial engines
Industrial refrigeration

These types of transducers are also known as pressure transmitters.

Since a 4-20mA signal is least affected by electrical noise and resistance in the signal wires, these transducers are best used when the signal must be transmitted long distances.

It is not uncommon to use these transducers in applications where the lead wire must be 1000 feet or more.

Extended reading: How to calibrate HART pressure transmitters

How to choose the right industrial pressure transducer?

Pressure transmitters are pressure sensors whose electronics can generate measurement signals. The signal can be remotely transmitted via cables, buses or radio frequency.

Consider the unit’s measurement range and maximum pressure capacity, it’s precision, its operational environment (temperatures, vibrations, etc.), the nature of the measured medium and the type of output signal.

1. In order to ensure the stable operation of the product,
- it is recommended to consider the actual pressure value,
- and the range of possible migration when selecting the measurement range.
- The maximum pressure should be within the measurement range,
- and the company will complete the migration before leaving the factory.
2. The product is installed vertically on the field pressure interface, and the display level is facing the observer.
3. For transmitters with zero pressure and negative pressure, please indicate the range of the range in the order.
4. Intrinsically safe explosion-proof products are limited to products with a pointer head.
5. Qiping diaphragm type transmitter measurement range is 0 ~ 70kPa … 35MPa.
6. When M3 is selected, the ambient temperature range of the transmitter is -20~60°C;
- when M4 is selected, the ambient temperature range of the transmitter is -30~70°C.

Want to know more about pressure transmitter?

This video gives you the answers to your basic questions about pressure and pressure transmitters.

More Related Industrial Pressure Sensors

**SI-512H High Temperature Pressure Sensor**

**SIJC-1000HSM-Silicon Pressure Sensor**

**SI-706 Combined Pressure and Temperature Sensor-Dual function**

**High Frequency Dynamic Pressure Sensor**

**Diffused silicon Gauge Pressure Transmitter**

**Capacitive Gauge Pressure Transmitter**

**Explosion-proof Pressure Transmitter**

**Hygienic / Sanitary Pressure Transmitter**

**Remote Seal Differential Pressure Transmitter**

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Frequently
Asked
Questions

Help Center

Pressure transmitter types:

According to the working principle: it can be divided into capacitive, piezoresistive, resonant, etc. (resonant pressure transmitters can directly output digital pulse signals without going through the signal processing circuit);
According to the wiring method: it can be divided into a two-wire system, a three-wire system (one positive power line. Two signal lines, one of which is GND), a four-wire system (two positive and negative power lines, two signal lines, among them One GND), etc.;
According to the output mode: it can be divided into a voltage output, current output, digital signal output, etc.;
According to the pressure measurement range: it can be divided into general pressure transmitter (0.001～35MPa), micro pressure transmitter (0～1.5kPa), negative pressure transmitter (0～-100kPa), etc.;
According to accuracy: can be divided into high accuracy transmitter (0.1% or 0.075% level) and general transmitter (0.5% level);

Pressure transmitters are widely used. Typical examples are constant pressure water supply, pipeline monitoring, hydraulic systems, automated testing, etc. Used for air pressure, hydraulic, oil pressure testing. There are many users who cooperate with us. We The engineers have accumulated rich field experience.

Sino-Instrument offers 10 Industrial Pressure Transducer products.

These are wireless pressure transmitters, pressure transmitter with display, and water pressure transmitter. A wide variety of Industrial Pressure Transducer options are available to you, such as free samples, paid samples.

The top applying countries are China (Mainland), Hong Kong, and the United States, which supply 96%, 2%, and 1% of wireless pressure transmitter respectively.

Industrial Pressure Transmitter products are most popular in North America, Domestic Market, and South America.

Sino-Inst is a company that designs and manufactures OEM pressure transducers and transmitters featuring various pressure sensor technologies to tailor designs to individual applications.

Our Indutrial pressure transducers are available in various pressure ranges with customized and electrical or pressure connections, as well as analogue and digital interfaces. Contact us today for a standard product quotation or to discuss a custom solution.
Contact Sino-Inst for a standard product quotation or to discuss a custom OEM solution.

Request a Quote

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KimGuo11

drurylandetheatre.com

SI2088-W Wireless Pressure Transmitter

Posted on July 3, 2019 by KimGuo11

Wireless Pressure Transmitter is often used for outdoor pressure measurement. Battery-Powered Self-Contained Pressure Monitoring Solution.

Wireless Pressure Transmitter is based on GPRS mobile network or NB-iot IoT transmission. Powered by solar panel or 3.6V battery, or wired power supply. NB-IOT / GPRS / LoraWan and eMTC, a variety of networks are available. , Full-scale compensation, high-precision and high-stability amplifier IC temperature compensation function. The medium pressure can be measured as 4 ~ 20mA, 0 ~ 5VDC, 0 ~ 10VDC, 0.5 ~ 4.5VDC and other standard electrical signals. There are many ways to connect product processes and electrical connections, which can best meet the needs of users.

Sino-Inst offers a variety of Wireless Pressure Transmitters for industrial pressure measurement. If you have any questions, please contact our sales engineers.

Features of SI2088-W Wireless Pressure Transmitter

SI2088-W Wireless Pressure Transmitter is a lithium battery-powered digital pressure gauge with wireless data transmission. The built-in high-precision pressure sensor can accurately display the pressure in real time. It has high stability and long-term stability.

This digital pressure gauge is equipped with a large-size high-definition LCD liquid crystal display and a built-in MCU. With the mature GPRS / LTE / NB-IoT network, the pipeline pressure on the spot is uploaded to the data center.

The product adopts a cast aluminum shell with good shock resistance. The built-in SUS630 stainless steel diaphragm has good media compatibility. It can measure gases, liquids, oils and other non-corrosive media to stainless steel.

The product function is practical, the reporting frequency can be set. The pressure collection frequency can be set. It has a real-time pressure alarm function. Once the pressure is abnormal, the alarm data can be sent in time. The alarm pressure value can be set. Two consecutive detections exceed the set value and the detection frequency is automatically increased At the same time, the amount of change will be detected. After the amount of change exceeds 10% of the total range (default, can be set), the data will be reported immediately.

In addition, it also has a variety of pressure unit switching, error clearing, and one-key wake-up functions. It is especially suitable for unmanned, inconvenient power supply, such as fire pipelines, fire terminals, fire pump rooms, and urban water supply, which require remote monitoring.

Five-digit LCD display, visual key operation
Remote parameter setting, panel parameter setting
Ultra-low power consumption design, powered by 7.2V lithium battery.
Using GPRS / LTE / NB-IoT network, stable signal
One key to wake up
High precision, full range coverage
Message format can be customized (default Modbus_RTU protocol)

Sino-Inst provides products that can replace Rosemount 3051S wireless pressure transmitter. Sino-Inst also provides maintenance and calibration of Rosemount and WIKA pressure measurement products.

Specification Wireless pressure transmitter

Pressure Range:	-100kPa ～ 60MPa
Pressure type:	Sealed gauge pressure / absolute pressure / differential pressure
Accuracy:	± 0.2 ~ ± 0.5% FS
Display:	5 digit LCD display, white backlight
Network standard:	GPRS / NB-IOT / LoraWan wireless signal transmission (customized according to demand)
Skyline:	External
Sampling interval:	It can be set arbitrarily, in seconds, if it needs real-time collection, set to 0
Upload interval:	It can be set arbitrarily, in minutes, the fastest is 1 minute, if you need to set it to 0
Wake-up mode:	timer, button, alarm wake-up
Configuration mode:	local configuration / remote configuration
Upload information:	data of each channel, battery information, network status, self-test status, signal strength, alarm information, etc.
Power supply:	3.6V@13Ah section X2
Power consumption:	standby current ≤50uA, sending average current ≤100mA
Working temperature:	-20 ℃ ～ 70 ℃
Storage temperature:	-40 ℃ ～ 85 ℃
Vibration:	≤3g / 10Hz … 150Hz (IEC 60068-2-6-2007)
Protection level:	IP67
Pressure-sensitive diaphragm:	Stainless steel 316L
Shell material:	304 steel joint + aluminum alloy shell
Installation method:	Vertical and horizontal installation

Battery operated wireless pressure transmitter

The wireless pressure transmitter sensor is a battery-powered low-power / wireless digital output digital pressure gauge.

Low power consumption design. 3.6V / 7.2V lithium battery can be selected for power supply (ER34615M is recommended).
It can report 70,000 times during NB-IoT communication. Battery-powered, ultra-low power operation. Battery life reaches 2-5 years (affected by upload interval time).

Drawings of SI2088-W Wireless Pressure Transmitter

How Wireless Pressure Transmitter Works ?

Install the wireless pressure transmitter on the pipeline.

When the medium in the pipeline acts on the sensitive element, it is pressed.

Its internal circuit detects an electrical signal proportional to the process pressure.

After the signal is accurately amplified and compensated by the linear amplifier circuit.

Enter the microprocessor to measure, process and display data.

And wirelessly transmit the measurement data to the remote terminal equipment.

The wireless pressure transmitter adopts the wireless remote transmission module added on this basis. It can form a pressure acquisition system with our intelligent wireless receiving terminal.This system changes the transmission mode and switching power supply mode of RS485 and 4-20mA in the industry. It uses 3.6V lithium battery power supply. This simplifies the installation and saves the cost of customer wiring. The purpose of environmental protection. The product is widely used in various industrial pressure measurement systems. Such as oil fields, power, petrochemical and some occasions where wiring is inconvenient.

How Does a Pressure Transmitter Work?

Pressure Transmitter Calibration

Applications of SI2088-W Wireless Pressure Transmitter

Wireless pressure transmitters are suitable for measuring non-viscous liquids, vapors and gases, etc.

Fire water pipe network
Heating
Smart Water
Medical equipment
Other occasions requiring wireless pressure monitoring
Advanced HVAC Systems
Hydraulic / Pneumatic Systems
Agriculture Equipment
Energy Generation and Management
Pool / Spa Pump Monitoring

Wireless hydrostatic level transmitter

The battery operated hydrostatic level transmitter integrates the functions of liquid level acquisition, wireless reporting and local digital display.

The construction of the wireless liquid level transmitter is simple and ready to use. It is mainly suitable for places where power is not available on site and remote data transmission is required. It can be widely used in liquid level monitoring in urban water supply and drainage, sewage treatment, hydrology and water resources, fire protection, industry and other fields.

Of course, the wireless pressure transmitter can also be customized on other instruments. Such as wireless differential pressure transmitter, wireless absolute pressure transmitter, wireless temperature transmitter, wireless liquid level transmitter, etc.

Anti-corrosive Submersible Level Transmitter

Wireless Pressure Transmitter Price

Wireless Pressure Transmitter Price will cost more than ordinary pressure transmitters.

Extended reading: How to calibrate HART pressure transmitters

The above parameters will affect the price of the pressure transmitter.
Sino-Inst, as the manufacturer of wireless pressure transmitter, offer you with the best price.

Sino-Inst offers 5 wireless pressure transmitter products. These are wireless pressure transmitters, wireless differential pressure transmitter, and wireless temperature transmitter.

A wide variety of wireless pressure transmitter options are available to you, such as free samples, paid samples. Sino-Inst is wireless pressure transmitter manufacturer, located in China.

Wireless pressure transmitter products are most popular in North America, Domestic Market, and South America. You can ensure product safety by selecting from certified suppliers, with ISO9001, and ISO14001 certification.

Request a Quote

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KimGuo11

drurylandetheatre.com

SI-151 Hydrostatic Level Sensor

Posted on June 28, 2019 by KimGuo11

Hydrostatic Level Sensor (Best Price), also called Hydrostatic level transmitter. Continuous level measurement in liquid applications with pressure sensors.

Hydrostatic Level Sensor measures the hydrostatic pressure by the submersible pressure sensor. The static pressure of the liquid is proportional to the height of the liquid. Then the static pressure was converted into an electrical signal. Convert to analog signal output or 4-20mADC. With digital display. For water level measurement, hydrostatic level sensor is a low cost type. Different types of measuring cells are used in level measurement based on the hydrostatic principle.

Lightning protection, anti-corrosion, explosion-proof optional. IP68 is optional.

Sino-Inst offers a variety of Hydrostatic Level sensors for industrial level measurement. If you have any questions, please contact our sales engineers.

More Hydrostatic Level

Features of Hydrostatic Level Sensor

Standards:

CE
FCC
RoHS compliant
China RoHS

Level measurement with hydrostatics is totally unaffected by foaming or vessel installations
Ceramic measuring cells offer excellent long-term stability and high overload resistance
Metallic measuring cells also cover larger measuring ranges
Level/depth measurement
4 to 20 mA or digital (S3L) output
Flush ceramic diaphragm
Easy submersible installation
Choice of two pressure ranges
Standard union connection and extended cable and capillary tubing 10 m (32.8 ft)

Best Price from
Hydrostatic Level Sensor Manufacturer

Specifications of Hydrostatic Level Sensor

Measurement form and range	0 ～ 1 ～ 200mH2O
Allow overload	2 times full scale pressure
Operating temperature	-20 ～ 80 ℃
Temperature compensation	-10 ～ 70 ℃
storage temperature	-40 ～ 80 ℃
Accuracy (including nonlinearity, repeatability, hysteresis)	0.2% FS (typical) 0.5% FS (maximum)
Stability error	0.2% FS (typical), 0.5% FS (maximum)
Temperature drift coefficient	0.01% FS (typical, range is not less than 5mH2O), 0.03% FS (typical, range is less than 5mH2O)
output signal	(4 ～ 20) mA (two / three wire system), (0 ～ 10/20) mA, (0 ～ 5) V, (1 ～ 5) V,) 0 ～ 10) V
Power supply	15 ～ 36 VDC (calibration voltage 24VDC)
Load (Ω)	Current output type <(U-15V) /0.02A, current output type> 5K
Shell material	Aluminium Alloy
O-ring	fluoro rubber
Diaphragm	316L stainless steel
cable	Special waterproof breathable cable
Protection level	IP68 (pressure sensor part), IP65 (junction box transmitter part)

If you need more than 200meters, please refer to Deep Wells Water level sensor.

If you measure less than 5meters, you can also check the Hydrostatic level transmitter-Rod Type.

Applications of Hydrostatic Level Sensor

Hydrostatic level sensors measure the pressure generated by a static head of liquid. Use hydrostatic level sensors to measure fluid levels in Tanks. And applications like storage tanks, processing vessels, header tanks, pump inlet heads, and others. Hydrostatic pressure is used to determine the liquid height.

SI-151 Hydrostatic Level Sensor application

Inventory Management
Storage Tank Monitoring
Neutralization Tanks
Plating Lines
Waste Sumps
Clarifiers
Overflow Protection

If you need a liquid level sensor with longer service life, you can refer to Magnetostrictive level sensor

Hydrostatic level measurement: Measuring Principle

The basic working principle of Hydrostatic Level Sensor is static pressure level measurement.

In liquid, the pressure generated at a certain depth is generated by the weight of the medium itself above the measurement point. It is proportional to the density of the medium and the local acceleration of gravity.

The formula P = ρgh reflects the proportional relationship between them.

Where P = pressure, ρ = medium density, g = gravity acceleration, h = depth of measurement point.

Therefore, the physical quantity measured by the input liquid level gauge is actually pressure. It can be understood by the calibration unit mH2O of the input level gauge. The actual liquid level must be obtained by conversion after knowing the two parameters of density and gravity acceleration. In the industrial field, such conversion is usually performed by a secondary instrument or PLC.

The Hydrostatic Level Sensor mainly measures corrosive liquids such as hydrochloric acid, hydrogen peroxide, etc. Or chemical and electroplating wastewater. Mainly used in measuring corrosive media. It has the advantages of strong corrosion resistance and stable performance.

Let’s see how does a hydrostatic level sensor work ?

Video source: https://www.youtube.com/watch?v=T2OPoEod_jM&feature=emb_logo

What is a hydrostatic gauge? Or, What is a hydrostatic level sensor?

Hydrostatics is the science of fluids not in motion.

A hydrostatic level sensor is a form of a level probe, that is used especially for level monitoring, by measuring the hydrostatic pressure, in a virtually static liquid at a pre-determined level of submersion.

A hydrostatic level sensor is a submersible pressure transmitter, that has a pressure diaphragm, where the inner side of the diaphragm is vented to atmospheric pressure, through a vent tube in the cable, and the outer side is in contact with the liquid, and measuring the static pressure of the liquid column above the transmitter.

This static pressure is basically caused by the weight of the fluid on top of the transmitter, and is used to calculate the level of the liquid.

level measurement by using the hydrostatic pressure measurement

How does a hydrostatic level sensor work? Or How is hydrostatic pressure measured?

When considering a new level sensor for level measurement applications, it is often hard to find information on how the different types of level sensors, like the hydrostatic level sensors respectively hydrostatic pressure sensors, are working.

Recently, I explained level measurement by using the hydrostatic pressure measurement.

In closed geometries, such as enclosed tanks and vessels, generally, flush pressure sensors or pressure transmitters are used, which can be screwed into the vessel from the outside.

Pressure sensors are therefore particularly suitable, in applications of free-standing tanks and vessels.

A submersible pressure transducer or a flush pressure sensor measures the height-dependent weight-force of the liquid column, also known as hydrostatic pressure.

This pressure measurement is directly proportional to the liquid level respectively liquid column, at the measuring point of the pressure sensor.

It is, therefore, necessary, for the measurement of level, that the pressure sensor is placed as close as possible to the level of the vessel’s bottom.

The measured hydrostatic pressure then directly corresponds to the height of the liquid column, from the ground-level measurement point to the surface level of the medium.

So, the filling height is calculated from the distance of the medium surface to the measuring point by the pressure measurement.

The weight force of the liquid column, thus the hydrostatic pressure, however, is not only directly proportional to the filling height but also varies with the specific gravity of the medium and the force of gravity.

Extended reading: Hydrostatic Pressure Transmitter

Hydrostatic level sensor in use

The simplicity of using a hydrostatic level sensor makes it the instrument of choice wherever level needs to be measured, no matter if in a vented tank, vessel, lake, river, or reservoir.

In most cases, it is suspended by the cable to the desired level of measurement, or just submerged and allowed to sink to the bottom of the resource.

It does not matter what the structure of the tank, basin, or natural geometry is or if it has any obstructions, ledges, or complex shape, a hydrostatic level sensor will always measure the pressure of the liquid unaffected by such disturbances.

As the hydrostatic level sensor commonly is a gauge pressure sensor, it automatically compensates for the atmospheric pressure changes, so the pressure measured represents only the pressure of the liquid, caused by the liquid’s specific gravity and the vertical distance to the surface.

Therefore, the hydrostatic level sensor accurately measures the level of the liquid, by calculating the distance from the measuring point to the surface level via the measured pressure.

A hydrostatic level sensor may be calibrated in the meters water column to allow for standard gravity or local gravity.

For very high accuracy level monitoring often the temperature of the media may also be considered to take the temperature effects on the specific gravity into account.

The hydrostatic level sensor is a specialized sensor for level monitoring, most commonly used in the water and wastewater industry.

Its simple use and reliable and accurate measurement technology make it one of the most commonly used level sensors by far.

Extended reading: Capacitive water level sensor

FAQ

How does a hydrostatic level sensor work?

The hydrostatic level sensor is based on the principle that the measured static pressure of the liquid is proportional to the height of the liquid. It is made with an advanced isolated diffused silicon sensitive element or a ceramic capacitive pressure sensitive sensor. The static pressure is converted into an electrical signal. After temperature compensation And linear correction. Converted into a standard electrical signal (generally 4 ~ 20mA / 1 ~ 5VDC). The hydrostatic level sensor can also be called “static pressure liquid level gauge, liquid level transmitter, liquid level sensor, water level sensor”.
Read more about: What Is A Submersible Level Transducer?

How is hydrostatic pressure measured?

The hydrostatic pressure can be measured by a pressure sensor.
Principle of hydrostatic pressure measurement:
When the liquid level transmitter is put into a certain depth in the liquid to be measured, the pressure on the liquid-facing surface of the sensor.
The formula is: ρ = ρ .g.h + po
In the formula:
p: pressure on the liquid face of the transmitter
ρ: measured liquid density
g: local gravity acceleration
PO: atmospheric pressure on the liquid surface
h: the depth of the transmitter into the liquid
At the same time, the pressure of the liquid is introduced into the positive pressure chamber of the sensor through the air-conducting stainless steel. Then connect the atmospheric pressure PO on the liquid surface to the negative pressure chamber of the sensor. To offset so on the back of the sensor, the pressure measured by the sensor is: ρ .g.h. Obviously, by measuring the pressure p, the liquid level depth can be obtained.
Extended reading: Static pressure vs dynamic pressure vs total pressure

What is the hydrostatic level sensor?

A hydrostatic pressure level sensor (Submersible Level Transmitter) is a pressure sensor that measures liquid level based on the principle of static pressure measurement. It can also be called “static pressure liquid level gauge, liquid level transmitter, liquid level sensor, water level sensor”

What is the water level sensor?

The water level sensor is an instrument that can convert the water level parameter of the measured point into the corresponding power signal in real time. It is mainly composed of a fully sealed isolation membrane oil-filled sensor and a built-in high-performance microprocessor.
There are many types of water level sensors. There are three common types of ultrasonic liquid level sensors, servo liquid level sensors, and static pressure liquid level sensors. Due to the differences in their working principles and performance, their applications are also different.

What is the ultrasonic level sensor?

The ultrasonic level sensor is a non-contact liquid level sensor. Ultrasonic sensors are sensors developed using the characteristics of ultrasound. Ultrasound is a mechanical wave with a vibration frequency higher than that of sound waves, which is generated by the vibration of the transducing wafer under the excitation of voltage. It has high frequency, short wavelength, and small diffraction phenomena. In particular, it has good directivity and can be ray and directional propagation. Ultrasound has a great ability to penetrate liquids and solids. Especially in the opaque solids of sunlight, it can penetrate a depth of tens of meters.

What is meant by hydrostatic pressure?

Hydrostatic pressure refers to the pressure on the surface of an object when it is stationary or moving at a uniform speed. Its unit is pa. Static pressure plus dynamic pressure equals total pressure.
In fluid mechanics, it mainly refers to the following three types:
The pressure is generated by the fluid at rest.
The pressure is perpendicular to the direction of fluid movement when the fluid is flowing.
The gauge pressure value is measured in the fluid without being affected by the flow velocity.

Sino-Inst offers over 10 Hydrostatic Level Sensors. About 50% of these are Submersible Level Sensors, 40% are water level meters, and 40% are liquid treatment.
A wide variety of Hydrostatic Level Sensor options are available to you, such as free samples, paid samples.
Sino-Inst is a globally recognized supplier and manufacturer of Hydrostatic Level Sensor instrumentation, located in China.
The top supplying country is China (Mainland), which supply 100% of
Hydrostatic Level Sensor respectively.

Sino-Inst sells through a mature distribution network that reaches all 50 states and 30 countries worldwide.
Hydrostatic Level Sensor products are most popular in Domestic Market, Southeast Asia, and Mid East. You can ensure product safety by selecting from certified suppliers with ISO9001, ISO14001 certification.

Request a Quote

Please enable JavaScript in your browser to submit the form

KimGuo11

drurylandetheatre.com

SI-10 Liquid pressure sensor

Posted on June 28, 2019 by KimGuo11

Liquid pressure sensor is widely used for pressure measurement of various liquids. Like water or oils tank. IP68 waterproof.

Liquid pressure sensors also called a water level pressure sensor, or water pressure transducer. SI-10 liquid pressure sensor uses waterproof device to achieve IP68 waterproof rating. Like: water, oil pressure for pipe or tank. SI-10 liquid pressure sensor is a piezoresistive silicon pressure sensor. The main component of liquid pressure sensor is diffused silicon, with high stability. SI-10 liquid pressure sensor supports analog output, and 4-20mA, HART. For open tank, the liquid pressure sensor is easier to install than the differential pressure level measurement.

Sino-Inst offers a variety of liquid pressure sensors for industrial level measurement. If you have any questions, please contact our sales engineers.

More Pressure Sensors

Features of SI-10 Liquid pressure sensor

Comparison-of-water-pressure-transmitter-and-flat-waterproof-pressure-transmitter

Adopt stainless steel integral components. High precision strain process. After highly reliable amplifier circuit and precise temperature compensation. With stable performance, good EMC electromagnetic compatibility and impact resistance.
National standard 304 stainless steel seal welding. The structure is small and compact. Has good moisture resistance and excellent media compatibility.
Adopt waterproof device to achieve IP68 waterproof rating.
Integrated structure design, electrical part adopts fully sealed waterproof structure.
Can be customized flat membrane waterproof pressure sensor. The diaphragm isolation technology is adopted, and the test head has no pressure hole. There is no clogging of viscous medium during the measurement. It is suitable for pressure measurement and control of viscous media such as chemical coatings, paints, mud, asphalt, crude oil and other harsh environments.

Extended Reading: Fluid pressure sensor

Specifications of Liquid Pressure Sensor

Range:	-0.1 ～ 0, 1-5, 10, 20, 30-60, 80-150MPa (other ranges can be customized)
Comprehensive accuracy:	0.1% FS, 0.25% FS, 0.5% FS
Output signal:	4-20mA (2-wire system), 0-5 / 1-5 / 0-10V (3-wire system)
Power supply voltage:	24DCV (9 ～ 36DCV)
Medium temperature:	-20 ～ 75 ℃
Ambient temperature:	normal temperature (-20 ～ 65 ℃)
Load resistance:	current output type: maximum 800Ω; voltage output type: greater than 50KΩ
Insulation resistance:	greater than 2000MΩ (100VDC)
Response time:	<1mS
Sealing grade:	IP68
Long-term stability:	0.1% FS / year
Vibration effect:	In the mechanical vibration frequency 20Hz ～ 1000Hz, the output change is less than 0.1% FS
Electrical interface:	waterproof sealed outlet
Thread connection:	G1 / 4, M20 × 1.5 other threads can be customized.

Applications of SI-10 Liquid pressure transducer

Off-Highway Vehicles
Natural Gas Equipment
Semiconductor Processing
Power Plants
Refrigeration
Robotics
HVAC

How does a water pressure sensor work?

The core of the water pressure sensor is usually diffused silicon. The working principle of the water pressure sensor is that the pressure of the measured water pressure directly acts on the diaphragm of the sensor, so that the diaphragm produces a micro-displacement proportional to the water pressure. As a result, the resistance value of the sensor changes. Use an electronic circuit to detect this change. And convert and output a standard measurement signal corresponding to the pressure.

About the working principle of water pressure sensor, WIKA made a great introduction. Of course, if you need to know more about how the water pressure sensor works, please refer to Wikipedia: Pressure sensor

A pressure sensor may also be used to calculate the level of a fluid. This technique is commonly employed to measure the depth of a submerged body (such as a diver or submarine), or level of contents in a tank (such as in a water tower).

For most practical purposes, fluid level is directly proportional to pressure. In the case of fresh water where the contents are under atmospheric pressure, 1psi = 27.7 inH20 / 1Pa = 9.81 mmH20.

The basic equation for such a measurement is:

where P = pressure, ρ = density of the fluid, g = standard gravity, h = height of fluid column above pressure sensor

https://www.drurylandetheatre.com/industrial-process-pressure-transmitters/

SI-503K Gas Pressure Transducer

SI-706 Combined Pressure and Temperature Sensor-Dual function

Liquid pressure sensor Calibration

If the transmitter is used for a period of time, it may cause a change in metering performance. There will be zero drift, and the measurement error will increase. Therefore, it is necessary to perform regular calibration.

The accuracy of the calibrator used for calibration should be more than 3 times the required calibration accuracy.

Use the pressure calibrator to input the standard pressure values of 0%, 25%, 50%, 75%, and 100% of the range to the transmitter in the forward and reverse directions.

Check whether the current output signal is within the allowable accuracy range. If it is out of tolerance, it needs to be adjusted.

The adjustment method is as follows (4 ~ 20mA output):

(1) Input a standard pressure of 4mA with a pressure calibrator. Adjust the ZERO (zero) potentiometer. Make the 4mA current output within the accuracy range;
(2) Input a standard pressure of 20mA with a pressure calibrator. Adjust the SPAN (range) potentiometer. Make the 20mA current output within the accuracy range;
(3) ZERO and SPAN will contain each other. Repeat steps (1) (2) until the current output of 4mA point and 20mA point meets the accuracy requirements at the same time. Then check whether the current output of 25%, 50% and 75% range points meet the accuracy requirements. The transmitter is qualified if it meets the requirements.

Differental pressure liquid level sensor

SMT3151LT differential pressure level transmitter is usually used to measure the liquid level in a closed container. The differential pressure level transmitter uses the differential pressure generated by the gravity of the liquid to measure the liquid level in the container.

The high-pressure side measuring tube is always filled with water due to steam condensation, keeping the pressure constant. The low-pressure side measuring tube forms a communication device with the container. The pressure changes with the liquid level in the container.

Sino-Inst offers overs 100 DP transmitters, for liquid level, pressure measurement. Our differential pressure (dp) level transmitters suit to measeure water and other liquid level.

A wide variety of DP level transmitters are available to you, such as SMT3151LT Differential pressure level transmitter.

SM3151LT liquid level pressure-differential pressure transmitter

Water pressure sensor

Water pressure sensors are usually used to measure the water level in the water tank or the rate of change of the water level. The sensor is mounted on top of an open tube submerged in the container.

As the water level rises, the air above the water in the tube is compressed, which increases the pressure on the sensor. An analog-to-digital converter (ADC) is used to convert the signal from the sensor to a digital value.

They can also be used to measure the pressure in running water pipes (for example, in a water supply system). It automatically determines whether it is necessary to start the pump to increase the flow rate.

They can be used to measure the depth of submerged objects. For example, in deep sea diving.

Of course, we can also calculate the liquid level based on water pressure. Or you can directly refer to our static pressure level transmitter.

Q & A

How does pressure sensor work?

What is the working principle of a pressure sensor?
A pressure sensor works by converting pressure into an analog electrical signal.
The demand for pressure measuring instruments increased during the steam age.
When pressure sensing technologies were first manufactured,
they were mechanical and used Bourdon tube gauges to move a needle,
and give a visual indication of pressure.
Nowadays we measure pressure electronically using pressure transducers and pressure switches.

What is a capacitive pressure sensor?

Capacitive pressure sensors typically use a thin diaphragm, as one plate of a capacitor.
The applied pressure causes the diaphragm to deflect and the capacitance to change.
You may like: Diaphragm Seal Pressure/ Differential Pressure Transmitters
This change may or may not be linear, and is typically on the order of several picofarads out of a total capacitance of 50-100 pF.
The change in capacitance may be used to control the frequency of an oscillator or to vary the coupling of an AC signal through a network.
The electronics for signal conditioning should be located close to the sensing element,
to prevent errors due to stray capacitance.
Read more about Capacitive pressure transducer [What is & How does it work]

What are the various types of sensors used to measure pressure?

Pressure measurements can be taken to determine a range of different values,
depending on whether the pressure is relative to the atmosphere,
vacuum conditions, or other measuring factors.
Pressure sensors are instruments that can be designed
and configured to detect pressure across these variables.

Absolute pressure sensors are intended to measure pressure relative to a vacuum,
and they are designed with a reference vacuum enclosed within the sensor itself.
These sensors can also measure atmospheric pressure.
Similarly, a gauge pressure sensor detects values relative to atmospheric pressure,
and part of the device is usually exposed to ambient conditions.
This device may be employed for blood pressure measurements.
For more information on the differences between the gauge and absolute pressure.
More about: Absolute Pressure Vs Gauge Pressure.

How to take off a high pressure sensor on thr liquid line?

Generally, the pressure sensor is installed behind the pressure valve. When you need to remove the pressure sensor, simply close the pressure valve.
When purchasing a pressure transmitter, the manufacturer will recommend configuring a valve block. Or according to the measurement situation, install the pressure guiding tube. This can facilitate the installation and disassembly of the pressure transmitter, while ensuring continuous flow of the pipeline.

How do you test a pressure sensor?

There are 3 commonly used detection methods for pressure sensors. Hope it can help you.
1. Pressure test. The method of detection is to power the sensor. Use your mouth to blow the air hole of the pressure sensor. Use the voltage file of a multimeter to detect the voltage change at the output of the sensor. If the relative sensitivity of the pressure sensor is large, this amount of change will be significant. If there is no change at all, you need to use a pneumatic source to apply pressure.
Through the above method, you can basically detect the condition of a sensor. If accurate testing is required, a standard pressure source is required. Give pressure to the sensor, and calibrate the sensor according to the pressure and the change of the output signal. And when conditions permit, the temperature detection of relevant parameters.
2. Zero point detection. Use the voltage range of the multimeter to detect the zero output of the sensor under no pressure. This output is generally a voltage of mV level. If it exceeds the technical specifications of the sensor, it means that the zero deviation of the sensor is out of range.
3. Detection of bridges. It mainly detects whether the circuit of the sensor is correct. It is generally a Wheatstone full-bridge circuit. Use the ohm file of the multimeter. Measure the impedance between the input terminals and the impedance between the output terminals. These two impedances are the input and output impedances of the pressure sensor. If the impedance is infinite, the bridge is disconnected. It means there is a problem with the sensor or the definition of the pin is not correct.

What is the difference between pressure switch and pressure transmitter?

Pressure Switch:
When the pressure in the system is higher or lower than the rated safety pressure. The disc in the sensor moves instantaneously. Push the switch connector on or off by connecting the guide rod. When the pressure drops or rises to the rated recovery value, the disc resets instantly. The switch automatically resets. Or simply put, when the measured pressure exceeds the rated value, the free end of the elastic element is displaced. Push the switching element directly or after comparison. Change the on-off status of the switching element. To achieve the purpose of controlling the measured pressure. The elastic elements used in the pressure switch include single-turn spring tube, diaphragm, diaphragm box and bellows.
Pressure Transmitter:
When the pressure signal acts on the sensor. The pressure sensor converts the pressure signal into an electrical signal. Amplified by differential amplifier and output amplifier. Finally, the V / A voltage and current are converted into a 4-20mA standard current output signal in linear correspondence with the measured medium (liquid) level pressure.

Pressure sensors for corrosive liquids and gases

Sino-Inst’s absolute pressure, gauge pressure and real gauge pressure and miniature pressure sensors are produced from the beginning. Can meet the most demanding tests and measurement specifications in some of the harshest environments. From general industrial process requirements to highly specialized sensors used in pressure hazardous locations.

Special products include micro-sized, ultra-micro-sized high-pressure high-temperature and flushing diaphragm models. To fit the space with narrow gaps.

Sino-Inst provides pressure and differential pressure sensors based on silicon or foil-based strain gauge technology. Very suitable for many types of applications in automotive, aerospace, chemical, semiconductor manufacturing and general industry.

All our pressure products are highly configurable. Can meet the unique requirements and environment of customers. On some pressure sensor models, intrinsically safe and explosion-proof options for use in hazardous locations are provided.

If you need special modifications or complete custom designs to meet your unique requirements, please feel free to contact us.

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KimGuo11

drurylandetheatre.com

SI-PCM261 Submersible Pressure Transducer

Posted on June 27, 2019 by KimGuo11

Submersible pressure transducer with 4-20ma is a conventional liquid level measurement sensor. Such as water cans. Cable 0m ～ 300m, minimum range 0.5m.

Submersible pressure transducer with 4-20mA output is Hydrostatic Level Sensor for level measurement. Submersible pressure transducer is based on the measured liquid static pressure proportional to the height of the liquid Principle. Convert static pressure into electrical signal. After temperature compensation and linear correction. Convert into standard electrical signal. Generally 4 ～ 20mA / 1 ～ 5VDC. It can also be called “static pressure liquid level gauge, liquid level transmission Device, liquid level sensor, water level sensor “. Bullet, cage, and flush tip models are available. Applications include pumps, downhole, oil tanks, lime slurry, and water tanks. There is a miniature submersible transmitter that is low power voltage.

Sino-Inst offers a variety of Submersible pressure transducer with 4-20mA for industrial level measurement. If you have any questions, please contact our sales engineers.

More Hydrostatic Level Sensing

Features of SI-PCM261 Submersible Pressure Transducer

Linear deviation is less than 0.02%
Accuracy over temperature range exceeds ±0.01 ft (3 mm) of water
Stainless steel sensor diaphragm, ballast, and casting
Polyurethane vented sensor cable is durable and rugged
Dry air moisture barrier system provides atmospheric compensation
No on-site calibration required

Specifications of Submersible Pressure transmitter

Range	Various ranges from 0 ～ 0.5m to 0 ～ 300m
Measuring medium	Oil, water and other media compatible with 316 stainless steel
Accuracy	0.5% FS (standard type); 0.2% FS; 1.0% FS
Pressure overload	200%
Protection level	IP65
Power supply	24VDC (15 ～ 36VDC)
Output	4 ～ 20mA ， 1 ～ 5V
Temperature drift	-10 ℃ ～ 50 ℃ <0.5% FS; -20 ℃ ～ 85 ℃ <1.0% FS
Insulation resistance	> 100MΩ at 500VDC
Anti-electromagnetic / RF interference	30V / m, 10KHz to 500MHz
Long-term stability	<0.2% FS / year
Compensation temperature	0 ℃ ～ 50 ℃
Operating temperature	0 ℃ ～ 70 ℃
storage temperature	-40 ～ 100 ℃
Shock / vibration resistance	100g, 10ms / 10g, 10 ～ 2000Hz
Pressure transmission diaphragm material	316 stainless steel
Probe housing material	1Cr18Ni9Ti
Cable sheath material	Polyethylene or polyamide
Sealing material	Nitrile rubber
Junction box housing material	Cast aluminum, surface sprayed
Explosion-proof	Ex IaII CT6; Ex IaII BT4
Protection level	IP68

If you are measuring the fuel tank level, you can choose a magnetostrictive liquid level sensor with higher accuracy and longer service life.

Applications of Submersible Pressure transducer

Level measurement in vessel and storage systems
Overfilling and no-load operation monitoring
Level measurement in rivers and lakes
Deep well and groundwater monitoring
Battery-operated level measuring systems

Submersible pressure transducers are designed for measuring ground and surface water pressure, temperature and water level. The Sino-Inst submersible pressure transducer can send data up to 1000 feet (304.8 m) long.

The submersible pressure transducer is suitable for a wide range of applications. Urban water supply and drainage. Sewage treatment, water tanks. Oil tank oil tanks, hydrogeology, reservoirs, rivers and oceans and other fields. The compact structure, simple change and flexible installation method provide users with convenience for submersible pressure transducer. 4 ~ 20mA, 0 ~ 5v, 0 ~ 10mA and other standard signal output methods are selected by users according to their needs.

If you need to measure the liquid level of the ground tank, you can refer to the pressure level sensor.

Submersible pressure transducer installation

Precautions for the use and installation of the submersible level sensor:

1. When the liquid level transmitter is transported and stored, it should be restored to the original packaging and stored in a cool, dry and ventilated warehouse.

2. If an abnormality is found during use, turn off the power supply. Stop using it, and check it.

3. Connect the power supply according to the wiring instructions.

How to install the submersible level sensor ?

Total Time:

The ground terminal of the input liquid level gauge should be reliably grounded. The power shield should be connected to it.

When the transmitter is installed on the side, the bending radius of the air guide cable should be greater than 10 cm. Avoid excessive bending to damage the air guide cable.

In the occasions with large vibration. Wire can be wrapped around the transmitter. Use steel wire for shock absorption. So as not to break the cable.

The installation direction of the transmitter is vertical. The input installation position should be far away from the liquid inlet and outlet and agitator.

When measuring the level of flowing or agitated liquid. Usually the steel pipe with inner diameter Φ45mm is fixed in water. Then put the input level gauge into the steel pipe and use it. Make small holes at different heights on the opposite side of the liquid flow direction, so that the water can enter the pipe smoothly.

When the liquid level gauge is installed in a stationary deep well or pool, the steel pipe with an inner diameter of about Φ45mm is usually fixed in the water. Then put the input level gauge into the steel pipe and use it. Make small holes at different heights to allow water to enter the pipe.

When the medium fluctuates greatly and the air guide cable is very long. The probe should be fixed with a sleeve to prevent the probe from swinging and affecting the measurement accuracy.

Sludge, oil residue and other substances are easily deposited in the tank bottom or bilge. It is recommended to move the measuring probe at a certain height away from the bottom of the tank (cabin). In order to avoid debris blocking the probe.

If there is any problem with the submersible pressure transducer during use. You can call the Sino-Inst staff to get a timely solution.

If you need a portable instrument, we also provide Portable Ultrasonic Water Depth Gauge for water depth measurement.

What is a submersible pressure transducer?

Submersible pressure transducer is a hydrostatic pressure sensor. Because it can be put into water, the liquid level can be calculated by measuring the underwater static pressure, so it is also called throw-in water level transmitter / level transmitter /submersible water level sensor / level gauge. Submersible pressure transducer is based on the principle that the measured liquid static pressure is proportional to the height of the liquid. Use advanced isolated diffused silicon sensitive element or ceramic capacitor pressure sensitive sensor. Convert static pressure into electrical signal. After temperature compensation and linear correction. Converted into standard electrical signals (such as 4 ~ 20mA, etc.). Equipped with 2088 indicator head can also realize real-time display of on-site water level.

Precise level and temperature measurement with HART®communication

Measurement uncertainty of max. 0.5 %, long-term drift of 0.1 %.

And slight temperature errors make the SI-PCM261 a reliable measurement solution, for the monitoring of storage tanks and bodies of water.

The additional analog temperature output facilitates the compensation of a temperature-induced density error especially at temperatures of up to -40 … +80 °C [-40 … +176 °F].

The integrated HART® communication can be used for scaling the measuring range, and for the parameter isolation of unit, error signal, and others.

Why we use the 4 20mA in transmitting signal?

Why is it 4/20 mA?

Due to explosion protection requirements, the upper limit is 20 mA: the spark energy caused by a current interruption of 20 mA is not sufficient to ignite the gas.

Extended reading: How to convert a 4-20mA to 0-10V /1-5V signal?

Optimized electronics for battery operation

The modern electronic system guarantees not only a high accuracy in the long term. But also ensures a very long battery life thanks to the low power supply, low current consumption, fast response time and low-power output signals.

Safety also in hazardous areas

The optional intrinsically safe electronic system is authorized, according to the common international standards. And allows a safe worldwide application in explosive gases and vapours.

If you want buy Wika ls-10 submersible pressure sensor, you can contact us. Sino-Inst also agent for WIKA in China. If you want find the pressure sensor for liquid level measurement, to replace the WIKA, our submersible hydrostatic level transmitter, is your best choice.

FAQ

What is a pressure transducers?

The mechanical structure of Submersible pressure transducer is highly resistant to overload and corrosive media. Submersible pressure transducer has excellent sealing and anti-corrosion properties. It can be directly put into liquids (including corrosive liquids) such as water and oil for medium to long-term use. The shell and cable of PTFE material can measure a variety of highly corrosive liquids.

Do you have lighting protection?

Yes. We have. Lightning protection type Submersible pressure transducer is an outdoor type liquid level transmitter used in industrial fields that is free from frequent high-voltage overvoltage during lightning strikes and limits freewheel time and freewheeling value. The product is based on the principle that the measured static pressure of the liquid is linearly proportional to the height of the liquid level. The temperature drift is small and the accuracy is high. Imported diffused silicon sensor with long-term stability and embedded special anti-surge circuit technology. Thereby, the linear relationship between the output signal and the liquid depth is converted into a standard signal output, and accurate measurement of the liquid depth is realized. It can be widely used in water plants and sewage treatment plants with frequent lightning and surge currents.

What is the max depth?

For ordinary liquid level measurement, the range of 0m ~ 300m can already meet the needs of users. For deep well water level measurement, we can use our Deep Well Water Level Sensor, up to 1000 meters. Also supports customer customization.

Sino-Inst offers over 50 Submersible Pressure Transducer products.

About 50% of these are Submersible Pressure Transducer, 40% are Differential Pressure Gauge, and 40% are Diaphragm Seal Pressure transmitters.
A wide variety of Submersible Pressure Transducer options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of
Submersible Pressure Transducer, located in China. Sino-Inst sells through a mature distribution network that reaches all 50 states and 30 countries worldwide. Submersible Pressure Transducer products are most popular in Domestic Market, Southeast Asia, and Mid East.

You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.

Request a Quote

Please enable JavaScript in your browser to submit the form

KimGuo11

drurylandetheatre.com

SI-D100 Diaphragm Pressure Gauge

Posted on June 26, 2019 by KimGuo11

The diaphragm pressure gauge application spans from 10 mbar to 60 bar. The measuring element consists of one circular diaphragm, clamped between a pair of flanges.

The positive or negative pressure, acting on these diaphragms causes deformation of the measuring element. The magnitude of the deformation is proportional to the pressure to be measured, and it is coupled to the pointer mechanism.

SEND RFQ

Features of the diaphragm pressure gauge

Case and wetted parts from stainless steel
Wide choice of special materials
High overload safety up to the 10-fold full scale value
Process connection thread or open flange
Scale ranges from 0 … 60bar

Specifications of SI-D100 Diaphragm pressure gauge

Pressure gauges compliant with EN 837-3
Display ranges	0…10 mbar to 0…40 bar (unfilled) 0…60 mbar to 0…60 bar (filled)
Nominal size	100 mm 160 mm
Mechanical design	Stainless steel case with bayonet ring
Connections at bottom the enlarged channel opening in case of PTFE lining, optional open flange	Stainless steel
EN 837-3 accuracy	Class 1.6 Class 2.5 (with protecting foil)
Maximum pressure load Static load Dynamic load Overload	100 % of full scale values 90 % of full scale values Up to 5-times, max. 40bar

Connection threads and materials of SI-D100 Diaphragm pressure gauge

Type 316L pressure gauges with stainless steel connection are available with a stainless steel diaphragm (40 to 250 mbar) , or a Duratherm diaphragm (0.4 to 40 bar).

In addition, they can optionally be produced with PTFE lining.

Options of SI-D100 Diaphragm pressure gauge

Inlet port orifice up to Ø 10 mm
Hygienic connection,
- e.g. according to DIN 11851, DN 25 to DN 50,
- with or without lateral cleaning valve
Other connection flanges according to former DIN standards
Special installation or connection orientation
Special scales such as dual ranges, fine-division (with knife-edge pointer) Stationary red pointer on the dial, or with external adjustment)
Maximum indicating pointer, external adjustment
Window acryl glass or polycarbonate (only for display ranges ≥ 0…100 mbar)
Micro-adjustable pointer, mechanism aluminum
Diaphragm with protection foil:
- PTFE (> 40 mbar, vacuum tight), sealing PTFE;
- Fine-silver (> 160 mbar, vacuum tight), sealing FPM;
- Tantalum (> 160 mbar, vacuum tight upon request), sealing PFTE, others upon request
Up to 10-times overload protection, but max. 40 bar (600 psi) for measuring flange Ø 100 mm (3.94“) max. 2.5 bar (40 psi) for measuring flange Ø 160 mm (6.3“)
Other filling fluid, silicone oil for temp. down to -40 °C (flange sealing PTFE)
Version for temperatures > 100 °C
Electrical accessories

More Diaphragm Pressure Gauge Technical Guide

A diaphragm pressure gauge is a tool that measures the pressure of a gas or liquid by using a flexible diaphragm. The diaphragm will move in response to changes in pressure, and this movement is then translated into a reading on a dial.

These gauges are commonly used in industries like manufacturing, oil and gas, and chemical processing to monitor and control pressure in various processes. They are also commonly used in HVAC systems to measure the pressure of air and other gases.

Diaphragm pressure gauges are relatively easy to use and maintain, and they are often chosen for their accuracy, durability, and affordability. They come in different sizes, materials, and pressure ranges, making them versatile tools that can be used in a wide range of applications.

**Diaphragm pressure gauge construction**

A diaphragm pressure gauge is a device that uses a diaphragm with a known pressure to measure pressure in a fluid.

It has many different uses, such as monitoring the pressure of a canister of gas, measuring atmospheric pressure. Or recording the strength of the vacuum in a vacuum pump.

The diaphragm pressure gauge consists of a circular membrane, made from sheet metal of precise dimensions, which can either be flat or corrugated.

The diaphragm is mechanically connected to the transmission mechanism, which will amplify the small deflections of the diaphragm, and transfer them to the pointer.

The animation below shows the pressure gauge working principle.

You can see the movement of the diaphragm and the functioning of the transmission mechanism.

The process pressure is applied to the lower side of the diaphragm, while the upper side is at atmospheric pressure.

The differential pressure arising across the diaphragm lifts up the diaphragm and puts the pointer in motion.

The deflection of the diaphragm is very small (+/- 1 mm), making it necessary to use a high-ratio multiplying movement, to rotate the pointer along the full length of the scale.

The actuation of such a high-ratio transmission mechanism is possible, because diaphragm deflection is able to generate large forces.

Difference between bourdon tube and diaphragm pressure gauge

The working principle of the pressure gauge is through the elastic deformation of the sensitive element in the gauge. Then the pressure change is transmitted to the pointer by the conversion mechanism of the movement in the watch. Cause the pointer to rotate to show pressure. Sensitive element may be a Bourdon tube, diaphragm, bellows.

Therefore, the essential difference between the bourdon tube and diaphragm pressure gauge is the different sensitive components for pressure measurement.

Bourdon tube pressure gauge:
The sensitive element of the Bourdon tube is an elastic C-shaped tube bent into a circle with an oval cross-sectional area. The pressure of the measuring medium acts on the inside of the wave tube. In this way, the elliptical cross-section of the Bourdon tube will tend to be circular. Due to the slight deformation of the Bourdon tube, a certain ring stress is formed. This ring stress causes the Bourdon tube to extend outward. Since the head of the elastic Bourdon tube is not fixed, it will deform slightly. The amount of deformation depends on the pressure of the measuring medium. The deformation of the Bourdon tube displays the pressure of the measured medium indirectly by the pointer through the movement.

Diaphragm pressure gauge:
The sensitive element of the Diaphragm is composed of two membranes with circular waves connected together. The pressure of the measuring medium acts on the inside of the capsule cavity. The resulting deformation can be used to indirectly measure the pressure of the medium. The pressure value is indicated by the pointer. The capsule pressure gauge is generally used to measure the pressure of the gas, and it can also measure the micro-pressure and over-pressure protection to a certain extent. When several bellows sensitive components are stacked together, a large transmission force will be generated to measure very small pressure.

Bourdon tubes have the following advantages over diaphragm elements:

They cover small pressure ranges from 0 to 0.6 bar up to high pressure ranges from 0 to 10,000 bar.
They enable accuracies up to class 0.1 of the calibration regulations.
They are easier to manufacture.
They can easily be connected or sealed with the pressurised components. Depending on the material and pressure load, they are either soldered, welded or screwed to them.

Diaphragm pressure gauges are used when a Bourdon tube pressure gauge reaches its limits.

Extended reading: Pressure indicator transmitters

Frequently
Asked
Questions

Help Center

In a pressure gauge, a diaphragm is a flexible membrane that responds to changes in pressure by expanding or contracting. The movement of the diaphragm is then converted into a reading on the gauge, which displays the pressure of the fluid or gas being measured.

Diaphragms can be made from a variety of materials, such as stainless steel or synthetic materials like rubber or silicone. They are designed to be durable and withstand the pressure and conditions of the environment in which they are used.

The capsule pressure gauge is also called micro pressure gauge. It is suitable for measuring the low micro-pressure of liquid, gas or steam which has no explosion risk, no crystallization, no solidification, and corrosive effect on copper and copper alloys.
The capsule pressure gauge uses the capsule as a sensitive element for measuring small pressures. Measure the micro-pressure and negative pressure of the corrosive effect on the copper alloy, no explosion hazard gas. Widely used in boiler ventilation, gas pipeline, combustion device and other similar equipment.

In the pressure gauge, the pressure measured by the diaphragm is generally regarded as relative pressure. Generally, the relative point is selected as atmospheric pressure. The elastic deformation of the diaphragm under the pressure of the medium. Amplified by the gear transmission mechanism of the pressure gauge. The pressure gauge will show the relative value to the atmospheric pressure (either high or low).

There are several different types of pressure gauges that are commonly used in different applications:

Bourdon Tube Pressure Gauge: This type of gauge uses a curved tube that is attached to the gauge mechanism. As the pressure of the fluid or gas being measured increases, the tube straightens out, causing the gauge mechanism to move and display the pressure reading.

Diaphragm Pressure Gauge: As we discussed earlier, diaphragm pressure gauges use a flexible membrane that responds to changes in pressure by expanding or contracting. This movement is then converted into a reading on the gauge.

Differential Pressure Gauge: This type of gauge measures the difference in pressure between two points in a system. It consists of two pressure inputs and a gauge mechanism that calculates the difference between the two inputs.

Digital Pressure Gauge: This type of gauge uses electronic sensors to measure pressure and displays the reading on a digital screen.

Compound Pressure Gauge: This type of gauge can measure both positive and negative pressures. It uses two Bourdon tubes, one for positive pressure and one for negative pressure, to display the reading on the gauge.

Overall, the type of pressure gauge used will depend on the specific application and requirements. Each type of gauge has its own advantages and disadvantages, and it’s important to choose the right one for the job.

More pressure measurements and applications

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Static Pressure Sensor and Transmitter Features and Applications

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Sino-Instrument offers over 50 Diaphragm pressure gauge products.

About 50% of these are Diaphragm pressure gauge, 40% are Differential Pressure Gauge, and 40% are Diaphragm Seal Pressure transmitters.

A wide variety of Diaphragm pressure gauge options are available to you, such as free samples, paid samples.

Sino-Instrument is a globally recognized supplier and manufacturer of Diaphragm pressure gauge, located in China.

The top supplying country is China (Mainland), which supply 100% of Diaphragm pressure gauge respectively.

Sino-Instrument sells through a mature distribution network that reaches all 50 states and 30 countries worldwide. Diaphragm pressure gauge products are most popular in Domestic Market, Southeast Asia, and Mid East.

You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.

Request a Quote

Please enable JavaScript in your browser to submit the form

KimGuo11

drurylandetheatre.com

SI-PCM260 Deep Well Water Level Sensor

Posted on June 26, 2019 by KimGuo11

Deep Well water level sensor is to apply Hydrostatic Level Sensor to deep well. Well water level sensor submerged in deep well work together with submersible water pump. Range within 300m ～ 1000m.

Deep Wells Water level sensor is based on the principle that the measured liquid pressure is proportional to the height of the liquid. The piezoresistive effect of the advanced foreign isolated silicon diffused sensor is used. Change to electrical signal. After temperature compensation and linear correction, convert to 4-20mA standard electrical signal. Well water level sensor submerged in deep well work together with water pump. It is extremely difficult to replace and submit an inspection. Therefore, it adopts stainless steel cable, waterproof, sealing ring, and other four-level seals. Special cables and special water sealing technology make the transmitter highly reliable and stable.

Sino-Inst offers a variety of Well water level sensors for industrial level measurement. If you have any questions, please contact our sales engineers.

More Hydrostatic Level Measurement

Features of Deep Well Water Level Sensor:

Suitable for deep well / groundwater level monitoring. Large measuring range: up to 500-1000 meters.
Military factory grade steel cable. Cable diameter φ10mm.
Three European waterproof technology. 50MPa high pressure waterproof test.
Triple lightning protection. Core lightning protection motherboard.
Easy to install. Just connect two wires.

Specifications of Deep Well Water Level Sensor

Range	Various ranges within 300m ～ 1000m
Medium temperature	－20 ℃ ～ 70 ℃
Ambient temperature	－10 ℃ ～ 60 ℃
Supply voltage	DC 24V (12V ～ 32V)
Load characteristics	Current output type≤500Ω; Voltage output type: ≥3KΩ
Insulation resistance	＞ 100MΩ
level of accuracy	Class A: 0.2 Class B: 0.5 Class
Non-linear	± 0.2% F.S
Hysteresis and reproducibility	± 0.1% F.S
Long-term stability	± 0.1% F.S / y
Thermal zero drift	± 0.03 ％ F.S / ℃
Response time	≤50ms
Maximum working pressure	2 times the range
Electrical connections	Stainless steel cable connection
Material of external parts	Stainless steel / 316 stainless steel
Shell material	Stainless steel / 316 stainless steel
Measuring medium	Oil, water and other media compatible with 316 stainless steel
Protection level	IP68

Extended Reading: 3 inch (3″) Water Flow Meter

Applications of Deep Well Water Level Sensor

Suitable for deep water level measurement of deep wells and groundwater;
Pumping stations, reservoirs, water channels and other water supply and sewage projects;
The pressure and oil level of the gas field in the oil field;
Ships and marine equipment;
Groundwater resource management;

Extended reading: Capacitive water level sensor

Submersible pressure transmitter for level measurement

By videos below, you can know more about submersible pressure transmitter for level measurement：

Video source: https://www.youtube.com/embed/EMotg3BQjlI?rel=0

How this Water Level Sensor Works

Well Water Level Sensor is one type of Hydrostatic Level Sensor.

The basic working principle of Hydrostatic Level Sensor is static pressure level measurement.

The formula P = ρgh reflects the proportional relationship between them.

Where P = pressure, ρ = medium density, g = gravity acceleration, h = depth of measurement point.

Extended Reading: LORA water meter

Deep Well Water Level Sensor Installation:

Well Water Level Sensor and oil pipe (water pipe) go down to install together:

The deep well liquid level transmitter should use the special ferrule fixing cable for the matching oil pipe (water pipe). Prevent crushing and damaging the cable. The sensor part should be installed vertically to prevent the sediment and other impurities from burying or blocking the transmitter probe part.
The three-way outlet part is filled with special sealant pad and sealant. Use a wrench to tighten the compression nut. Prevent air leakage.
The entire signal line leads to the interior of the power distribution cabinet. Prevent rainwater at the terminal from penetrating into the cable to cause damage. The transmitter is used for the installation of hydrology, seismic monitoring wells and reservoir dams.
When the transmitter is used alone for downhole measurement. When the cable length is greater than 100 meters, an additional load-bearing wire rope should be added. Go down with the signal cable together. Protect the signal cable to prevent the signal cable from being damaged due to excessive force.

Extended reading: Magnetic water meter-ultrasonic water meter-mechanical water meter

Well Water Level Sensor calibration method:

Unscrew the protective cover. You can see the zero and full range resistors. External standard power supply and ammeter (above 0.2 pole). To adjust. Proceed as follows:

◆ In the case of no liquid in the transmitter. Adjust the zero resistor. Make it output current 4mA.
◆ Transmitter is filled to full scale. Adjust the full-scale resistor. Make the output current 20mA,
◆ Repeat the above steps two or three times. Until the signal is normal.
◆ The adjustment is completed. Tighten the protective cover.

Extended Reading: What is level transmitter working principle?

Precautions for using Well Water Level Sensor:

When the static pressure input type liquid level gauge is installed. The pressure tube must be inserted vertically into the measured medium;
For media with impurities or crystals. The head of the gas collector must be cleaned regularly. To prevent clogging;

FAQ

How do I check the water level in my well?

If it is a deep well, the range is wide. Can only be measured in water. Pressure type liquid level transmitter can be used in the water.
Read more about: Submersible Level Transmitter-Straight Rod Insertion

How does the water level sensor work?

The liquid level sensor mainly has contact type and non-contact type. Different water level sensors have different working principles.
1. The first type is contact. Including single flange static pressure / double flange differential pressure liquid level transmitter, float type liquid level transmitter, magnetic liquid level transmitter, input type liquid level transmitter, electric inner float level transmission Devices, electric float level transmitters, capacitive level transmitters, magnetostrictive level transmitters, service level transmitters, etc.
2. The second type is non-contact. Divided into ultrasonic liquid level transmitter, radar liquid level transmitter, etc.

Extended reading: Radar Water Level Sensor Applications

Deep Wells Water level sensor is designed for deep well level measurement. It effectively solves the problem of deep well liquid level measurement difficulty. Sino-Inst offers over 50 water level sensors. About 50% of these are Submersible level Transmitter, 40% are water meters, and 40% are level meters.
A wide variety of water level sensors options are available to you, such as free samples, paid samples.
Sino-Inst is a globally recognized supplier and manufacturer of Submersible Pressure Transmitter , located in China. The top supplying country is China (Mainland). You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.

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KimGuo11

drurylandetheatre.com

SI-2000 Differential Pressure Gauge

Posted on June 26, 2019 by KimGuo11

Differential Pressure Gauge measures the pressure difference between two points. Quickly measure the positive, negative or DP of air or non-corrosive gas.

Differential pressure gauge measures the pressure difference between two independent pressure sources. Differential pressure gauge is a more economical method. Used for process monitoring or control, which allows a small amount of migration of process media. Suitable for air and non-flammable, non-corrosive applications. And certain air and natural gas applications. Using a simple, frictionless magnet spiral movement, it can quickly indicate the pressure of low pressure or non-corrosive gas. Whether positive, negative (vacuum is also available) or differential pressure. This design can prevent vibration, jitter, and overvoltage. No liquid needs to be filled in the watch.

Sino-Inst is a manufacturer of Differential Pressure Gauge. Sino-Inst supplies Differential Pressure Gauges made in China. DWYER 2000 Differential Pressure Gauges, Magnehelic differential pressure gauges are also available.

More DP Transmitters

Features of Differential Pressure Gauge

Up to 81 kinds of range selection, can accurately meet your requirements
Using simple and unique patented double helix frictionless magnetic moving parts, you can quickly measure the positive pressure of air or non-corrosive gas, measure negative or differential pressure
Designed to resist shock, shock and overload protection
No liquid U-tube pressure gauge liquid evaporation, freezing, poisoning and leakage problems
Can measure fan, blower, filter resistance, furnace ventilation, orifice plate
Pressure drop and other system pressures. Can also be used in various purification rooms, biological safety
Cabinet, clean bench, dust removal equipment, medical breathing equipment, air intake
Sample differential pressure detection
Up to 63 models with different ranges and engineering units, suitable for various applications
Ultra-thin design: embedded thickness is only 38.5mm, overall thickness is only 52.2mm
Patented wave stripe decorative mask, beautiful and elegant
Standard accuracy up to 2%; after high precision calibration, up to 1% FS
Optional mirror dial to eliminate visual reading error and brushed 304 SS or plated bezel

Specifications of Differential Pressure Gauge

Accuracy: ±2% (ascending pressure)
Pressure Ranges: 0-5 thru 0-150 psi
Dial size: 2″, 2 1/2″, 3 1/2″, 4″, 4 1/2″ and 6″
Case: stainless steel
Body: aluminum, brass or stainless steel
Wetted Material: body material, Teflon ®, ceramic and various O-ring materials
Medium: air and non-flammable, compatible gas (optional natural gas)
Shell: cast aluminum or ABS shell, plexiglass beveled panel. Dark gray coating for 168 hours salt spray test
Withstand voltage range: -20Hg. to 15 psi (-0.677 bar to 1.034 bar)
Temperature range: 20 to 140 °F (-6.67 to 60 °C)
Opening size: 114mm
Installation positioning: diaphragm for the vertical direction
Connector: the same 1/8″ NPT high and low-pressure connector, one pair on the side and one pair on the back
Weight: 500g / only
Standard accessories:
- two 1/8″ NPT threaded joints for high and low-pressure joints and connected to rubber hoses;
- two 1/8″ NPT plugs for blocking the remaining two high and low-pressure ports;
- Three threaded countersunk mounting connectors (mounting ring, snap ring retainer are used to replace the three ports on the MP and HP metering accessories).

RANGES FOR REFERENCE	Pa	Kpa	Inches of Water	MM of Water	Dual Scale
0-30	0-0.5	0-.25	0-6	in w.cc	Pa or Kpa
0-60	0-1	0-.50	0-10	0-.25	0-62 Pa
0-100	0-1.5	0-1.0	0-15	0-0.5	0-125 Pa
0-125	0-2	0-2.0	0-25	0-1.0	0-250 Pa
0-300	0-5	0-8.0	0-30	0-2.0	0-500 Pa
0-500	0-8	0-10	0-50	0-3.0	0-750Pa
-30-0-30	0-10	0-20	0-80	0-4.0	0-1.0kPa
-60-0-60	0-20	0-50	0-100	0-5.0	0-1.25kPa
-100-0-100	0-30	0-100	0-125	0-6.0	0-1.5kPa
-250-0-250	0-50	0-180	0-200	0-8.0	0-2.0kPa
-500-0-500	0-60	0-250	0-300	0-0.5	0-2.5kPa

VARIOUS RANGES CAN BE CUSTOMIZED FOR YOU

What is a differential pressure gauge?

Differential pressure gauges are suitable for measuring small pressure differences between two pressure sources in an industrial process. Measure the pressure loss of the filter and observe the working state of the valve. It is widely used to measure the pressure of fan and blower, filter resistance, wind speed, furnace pressure, orifice differential pressure, bubble water level, liquid amplifier or hydraulic system pressure, etc. It is also used for air-gas ratio control and automatic valve control during the combustion process.

Differential pressure gauge is suitable for measuring the differential pressure, flow rate and other parameters of various liquid (gas) media in the process flow of industrial sectors such as chemical, chemical, metallurgy, electric power, and nuclear power. The instrument structure is all made of stainless steel. Among them, the measurement system (double bellows emergency connection parts) and the pressure guiding system (including joints, conduits, etc.) adopt special structure design and advanced technology.

Principle of differential pressure gauge

How does a differential pressure gauge work ?

Based on the pressure-sensitive element, two bellows with the same stiffness are used. Therefore, they are forced to produce the same concentrated force on the movable bracket under the same measured medium. Because the two sides of the spring sheet do not produce deflection under the action of equal moments. It is still in the original position. In this way, the gear transmission mechanism does not operate. The pointer is still at the zero position.

When different pressures are applied (generally the high-pressure end is higher than the low-pressure end), the forces of the two bellows acting on the movable bracket are not equal. The corresponding displacements are generated. The gear transmission mechanism is driven and amplified. The pointer deflection The latter indicates the differential pressure between the two.

Home > DP Transmitters > D2000 Differential Pressure Gauge

Differential Pressure Gauge Application

The SI-2000 differential gauge is ideal Where safe and reliable pressure measurement is essential:

Filtration Monitoring
Pressure Drop across a Strainer
Flow Rate

Dwyer Magnehelic series 2000 differential pressure gauge

American Dwyer differential pressure gauge/ Dwyer 2000 differential pressure gauge

The Dwyer 2000 series differential pressure gauge is an ultra-low-range, inexpensive, and solid structure field indicator. It uses the frictionless Magnehelic movement principle to eliminate wear, hysteresis and gaps. Without liquid filling, it will not vaporize and freeze. It can quickly indicate the low pressure and non-corrosive gas (positive pressure, negative (vacuum) and differential pressure). There are 81 ranges, the minimum range is 0-60Pa, or 0-6mm water column or 0-0.25′ water column). This design has anti-vibration, shaking and high resistance to overpressure.

Main technical indicators of American Dwyer differential pressure gauge Dwyer 2000

Accuracy: accuracy 2% FS (suffix 0 is 3%; suffix 00 is 4%) Rated pressure: -0.7 ～ 1Kg / cm
Connection: 1/8 “NPT internal thread, two pairs of high and low pressure ports, on the side and back
Overpressure: The vent will open automatically when it is about 1.75Kg / cm2
Ambient temperature: -5 ℃ ～ 60 ℃, weight 0.5Kg
Outer shell: cast aluminum outer shell, the main body and components pass the 168-hour salt spray test, and the exterior is dark gray coating.
Standard accessories: two 1/8 “NPT threaded joints, used as high and low pressure joints and can be connected with rubber tubes; two 1/8” NPT plugs; three threaded countersunk fittings.
According to the requirements of the National GMP Drug Production Verification Guidelines for clean workshops, we recommend selecting:
- Add positive micro-pressure (5-10Pa) to the workshop or room, and select a 2000-60Pa micro differential pressure gauge.
- Check the filtering effect of coarse, medium and high-efficiency air filters, use differential pressure gauges such as 2000-125, 250Pa, 500Pa or 1Kpa, and observe the pressure difference of the filter at any time to replace the filter.

Scope and model:
2000-60PA 0-60Pa,
2300-120PA, 0- ± 60Pa,
2000-125PA0, -125Pa,
2300-250PA, 0– ± 125Pa,
2000-125PA, 0-250Pa,
2300-500PA, 0- ± 250Pa,
2000-500PA, 0-500Pa,
2000-750PA, 0-750Pa

81 range specifications including 2000-30KPA.
Sino-Inst provides DWYER differential pressure gauge, micro differential pressure gauge, mechanical differential pressure gauge including MAGNEHELIC 2000 series. All products can be ordered, domestic brands include: MACROHELIC and MAGRFHELIC, price concessions, spot supply.

Differential pressure gauge price

Reference Price:
Dwyer 2000 series differential pressure gauge: USD 75.00 / pc
SI-2000 Differential Pressure Gauge: USD49.50 / pc

The exact price needs to be determined according to the product parameters and the quantity purchased.

Differential pressure gauge installation

1-Surface Mount

(1) Installation method one, as shown in the following picture 1. Drill three installation vias with an angle of 120 degrees and a diameter of 4.5mm on the installation plane. Use the corresponding short installation screws in the accessory package to match the screw holes on the bottom of the instrument. Make it secure .
(2) Mounting method two, as shown in the following figure 2. Take three mounting brackets first. Use the corresponding installation short screws in the accessory package. Fix the mounting bracket to the three mounting screw holes on the bottom of the instrument. Then take the longest three screws. Lock with the installation plane

2-Embedded (panel) installation

Cut the installation and insertion holes with a diameter of 115.5mm on the panel. Insert the meter into the holes. See Figure 3 below. Take three mounting brackets, and use the corresponding installation short screws in the accessory package. Fix the mounting bracket to the three mounting screw holes on the bottom of the meter. Then take the longest three screws. Fasten the meter to the panel.

3-Embedded (color steel plate) installation

Cut the embedded hole with a diameter of 115.5mm on one side of the color steel plate. As shown in figure 4 below, install the A-S1 / S2 panel into the color steel plate.
The pressure port on the back of the meter is firmly installed. Among them, accessories A-S1 / S2 and A-S81 need to be purchased separately.

4-For other installation methods. see the following figure 5. Use special screws A-S9 to fix the installation with the pressure interface on the back of the instrument. Accessories A-S9 need to be purchased separately.

5-Zero adjustment

After installing the instrument, adjust the zero position. Using a suitable flat-blade screwdriver, turn the zero adjustment screw at the bottom of the transparent mask counterclockwise. Align the pointer with the zero position of the dial. During zero adjustment, both the high-pressure port and the low-pressure port can communicate with the atmospheric pressure.

6-Pressure connection

With the standard configuration accessories, according to actual needs, correctly connect the “+” and “-” pressure ports. Note that the instrument has a pair of pressure ports on the side and back. The unused pair of plug seals in the application accessories.

Differential-pressure-gauge-installation-picture-1

Differential-pressure-gauge-installation-picture-2

Differential-pressure-gauge-installation-picture-3

Differential-pressure-gauge-installation-picture-5

Differential-pressure-gauge-installation-picture-4

FAQ

How do you hook up a differential pressure gauge?

Two pressure ports for L (low pressure) and H (high pressure). Different connections can quickly indicate gas pressure. Including positive, negative or differential pressure. Zero calibration can be directly operated externally.
Pressure measurement: Connect the pressure source to any one of the two high-pressure ports with an air pipe, and block the unused one; make one or two low-pressure ports open to the atmosphere.
Differential pressure measurement: Connect the high-pressure source to any one of the two high-pressure ports with an air pipe, and connect the low-pressure source to any one of the two low-pressure ports with an air pipe; block the two pressure ports that are not used on the meter.
Negative pressure measurement: Connect the pressure source to any one of the two low-pressure ports with an air duct, and block the unused one; make one or two high-pressure ports open to the atmosphere.

How to calibrate differential pressure gauge?

Send to Calibration Institute for calibration. Self-calibration requires equipment and qualifications, otherwise it will not be recognized.
If no report is required, you can calibrate yourself:
First, at least one certified high-precision micro-pressure gauge or pressure gauge is required as a reference standard. Then select 5-7 points in the full range and give a fixed pressure difference at both ends of the differential pressure gauge. If it is a micro differential pressure gauge, you can use a micro pressure pump to give pressure to the high pressure port. If it is a large number of differential pressure gauges, you can use a liquid pump to give pressure to the high-pressure port. Then observe the reading between the reference standard and the differential pressure gauge, record and calculate the relative error.

What is the function of a pressure gauge?

The role of the pressure gauge is used to measure and indicate the size of the pressure in the pressure product. If the pressure product does not have a pressure gauge, or if the pressure gauge fails, the pressure of the pressure product cannot be expressed. This directly threatens safety.
A sensitive and accurate pressure gauge is installed on the pressure product. The operator can operate the pressure product correctly with the pressure gauge to ensure safe and economical operation.
The pressure gauge can accurately indicate the level of the steam pressure in the pressure product. The operator can adjust the heating degree of the product according to the indicated value of the pressure gauge. In order to ensure the requirements of the gas department and the safe operation of pressure products.

Sino-Instrument offers over 50 Differential Pressure Gauge products. About 50% of these are differential pressure meters, 40% are water meters, and 40% are level meters.
A wide variety of Differential Pressure Gauge options are available to you, such as free samples, paid samples.
Sino-Instrument is a globally recognized supplier and manufacturer of Differential Pressure Gauge, located in China.
The top supplying country is China (Mainland), which supply 100% of Differential Pressure Gauge respectively.

Sino-Instrument sells through a mature distribution network that reaches all 50 states and 30 countries worldwide. Differential Pressure Gauge products are most popular in Domestic Market, Southeast Asia, and Mid East. You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.

Request a Quote

KimGuo11

drurylandetheatre.com

Advantages:	Disadvantages:
Versatility: can measure pressure of a wide range of fluids and gases	Limited range: may not be suitable for high or low pressures
Accuracy: provide precise measurements	Sensitivity to overpressure: can be damaged and affect accuracy
Cost-effective: relatively affordable	Susceptibility to damage: diaphragm can be damaged by certain fluids
Durability: made of durable materials and can withstand harsh conditions	Environmental factors: accuracy can be affected by changes in temperature, humidity, etc.

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