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.

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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)

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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.

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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-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.

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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?

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: 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.

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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.

Request a Quote

Please enable JavaScript in your browser to submit the form

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.

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KimGuo11

drurylandetheatre.com

SI-SBW Field Mounted HART Temperature Transmitter

Posted on June 25, 2019 by KimGuo11

The SI-SBW explosion proof field mounted HART temperature transmitter,

features a local display, HART compatibility, and a 4-20mA output.

The field mounted transmitter is available as a complete RTD,

or thermocouple assembly customized to your process.

Series SI-SBW HART Temperature Transmitter

The Series SI-SBW HART® temperature transmitter is a 2-wire transmitter,

with an analog output.

It has measurement input for resistance thermometers (RTD) in 2-, 3- or 4-wire connections,

thermocouples, resistance and voltage inputs.

The transmitter can be programmed with a PC or HART® protocol hand-held terminal.

These small units can be mounted in Pyromation DIN (Form B) connection heads,

or they can be used for surface mounting by using a 35 mm DIN-rail mounting clip.

Key Features of SI-SBW Field Mounted HART Temperature Transmitter

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Universal settings with HART® protocol for various signals.
Galvanic isolation
2-wire technology, (4 to 20) mA analog output
High accuracy in total ambient temperature range
Fault signal on sensor break or short circuit
UL Recognized Component
Intrinsically safe and non-incendive for hazardous locations

RTD or TC input, analog output
High definition local operator interface (LOI) with 3 optical buttons
Selectable red or white backlight
Ex d explosion proof / flame proof aluminum head
HART 7 functionality with HART 5 compatibility

High Definition Display of SI-SBW HART Temperature Transmitter

0, 90, 180, & 270 degree position adjustments
Monitoring, programming and diagnostics view
Extensive diagnostics with flashing red or white backlight

Local Operator Interface (LOI) of SI-SBW HART Temperature Transmitter

3 optical buttons; up, down and enter
Dynamically adaptive to wear or accumulation of dirt
Immune to interference from ambient light sources
Useable with or without gloves

Configuration of SI-SBW HART Temperature Transmitter

From the LOI through guided menu
PReset and HART modem
HHC, DCS or AMS via HART

SI-SBW HART Temperature Transmitter Mounting / Installation

For installation in zone 0, 1, 2 and zone 20, 21, 22 and in Class 1, Division 1 and 2 applications
Hardware assessed for use in SIL 2 applications
Mounting on 1.5”–2” pipe bracket or on wall / bulkhead

SI-SBW HART Temperature Transmitter Application

Linearized temperature measurement with TC and RTD sensors e.g. Pt100 and Ni100
HART communication and 4…20 mA analog PV output for individual, difference or the average temperature measurement of up to two RTD or TC input sensors
Up to 63 transmitters (HART 7) can be connected in a multi-drop communication setup
Temperature measurement of a wide range of TC and RTD types.
Conversion of wide span linear resistance and potentiometer inputs.
Conversion of bipolar mV signals to 4…20 mA.
Integration into asset management schemes.
Critical applications requiring superior accuracy and/or sensor redundancy and drift detection.

Technical Characteristics ofSI-SBW HART Temperature Transmitter

NAMUR NE43 and NE89
HART protocol revision can be changed by user configuration to either HART 5 or HART 7 protocol
True dual input transmitter. The high-density 7-terminal design accepts the widest range of dual input combinations.
Sensor redundancy – output automatically switches to the secondary sensor in the event of primary sensor failure, maintaining uptime.
Sensor drift detection – alerts when sensor differential exceeds user-defined limits, for maintenance optimization.
Dynamic variable mapping for process data in addition to the primary variable e.g. dual input features such as average, differential and min./max. tracking.
Groundbreaking digital and analog signal accuracy over full input span and ambient conditions.
Extensive sensor matching including Callendar Van Dusen and custom linearizations.
Programmable input limits with runtime metering ensure maximum process traceability and sensor out of range protection.
IEC 61508: 2010 full assessment up to SIL 3 together with enhanced EMC Functional Safety testing to IEC 61236-3-1.
Meets NAMUR NE21, NE43, NE44, NE89, NE95, and NE107 compliant diagnostics information.

Extended reading: RTD vs. Thermocouple: What’s the Difference, and Which Should You Use?

Specifications of SI-SBW HART Temperature Transmitter

Environmental Conditions

Operating Temperature	-40°C to +85°C
Storage Temperature	-40°C to +85°C
Calibration Temperature	20…28°C
Relative humidity	0…100% RH (condensing)
Protection degree	IP54 / IP66 / IP68 / type 4X

Mechanical Specifications

Dimensions	Ø 110 mm
Dimensions (HxWxD), aluminum	109.3 x 145 x 126 mm
Weight approx.	1.3kg
Wire size	0.13 x1.5 mm2 / AWG 26…16 stranded wire
Screw terminal torque	0.4 Nm
Vibration	IEC 60068-2-6
2…25 Hz	±1.6 g
25…100 Hz	±4 g
Number of digits	5
Backlight	Selectable ON/OFF
Backlight color	Selectable white or red

Input Specifications

RTD type	Pt50/100/200/500/1000; Ni50/100/120/1000
Cable resistance per wire	5 Ω (up to 50 Ω per wire is possible with reduced measurement accuracy)
Sensor current	Nom. 0.2 mA
Thermocouple type	B, E, J, K, N, R, S, T
Cold junction compensation (CJC)	Constant, internal or external via a Pt100 or Ni100 sensor

4-20mA Output Specifications

Signal range	4…20 mA
Min. signal range	16 mA
Load (@ current output)	≤ (Vsupply – 10) / 0.023 [Ω]
Load resistance, with backlight	≤ (Vsupply – 12) / 0.023 [Ω]
Sensor error indication	Programmable 3.5…23 mA
NAMUR NE43 Upscale/Downscale	23 mA / 3.5 mA
Updating time	440 ms
HART protocol revisions	HART 7 and HART 5

Field Mounted HART Temperature Transmitter

Sino-Instrument has always been a famous digital thermometer manufacturer, China

Our main products are:

industrial thermometer, WSS bimetal thermometer,

digital bimetal thermometer, remote bimetal thermometer,

shock pressure gauge, temperature transmitter,

liquid level gauge, differential pressure transmitter, pressure transmitter.

Special specifications can be customized/OEM,

according to the drawings or samples provided by the user.

If you need the datasheet, price, or more information about SI-DTM Digital Thermometer/Transmitter

Just Contact Us.

Request a Quote

Please enable JavaScript in your browser to submit the form

KimGuo11

drurylandetheatre.com

SI-DTM HVAC Digital Remote Reading Thermometer with Threaded Connection

Posted on June 25, 2019 by KimGuo11

SI-DTM HVAC Digital Remote Reading Thermometer with Threaded Connection, also called remote reading digital thermometer,

is a high accuracy thermometer with digital display.

It features an IP67/NEMA 4X enclosure and a 5-year battery life.

The Digital Remote Reading Thermometer is perfect,

for a variety of markets and applications,

where a high accuracy digital readout is required.

Our remote reading versions also operate on the gas expansion principle.

The technical information about local reading dial thermometers

is thus applicable to them as well.

All models of our remote reading dial thermometers conform to EN 13190 Class 1.

Features of SI-DTM Digital Remote Reading Thermometer

SI-DTM HVAC Digital Remote Reading Thermometer with Threaded Connection

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High Accuracy 1,000Ω RTD (Class A)
Water Resistant IP67/NEMA 4X
5 Year Battery Life
4-20 mA Output Available
Low or High Temperature Range Models
Quick connect electrical terminals
Industrial armored capillary
An cheap vapour thermometer for remote reading applications
Stainless steel or black steel case
Vapour actuated
Panel mounted (Front Flange or U-Clamp)
Dual scale (°F & °C)
ASME B40.200 compliant

SI-DTM HVAC Digital Remote Reading Thermometer with Switch

SI-DTM HVAC Remote Reading Thermometer with Switch,

combines an easy to read 3-1/4″ dual scale dial thermometer and an SPDT relay.

Color coordinated pointers display the current process temperature and set point.

To change the set point, a front adjustment knob controls the red set point pointer.

The design of the internal mechanical switch movement prevents the set point pointer,

from sticking to the process indicating pointer.

A 10.5 ft (3.2 m) stainless steel flex hose capillary prevents kinking and leaking of the measuring fluid

when bending the capillary.

For quick installation, electrical connections can be made to male quick connects,

or to the finger-safe screw terminals.

Thermometer includes a u-clamp mounting bracket for panel mounting.

Specifications of SI-DTM Digital Remote Reading Thermometer

Sensing Element:RTD, Type Pt1000Ω, Class A
Temperature Ranges:-58°F to 392°F (-50°C to 200°C) or -328°F to 1112°F (-200°C to 600°C)
Accuracy:± ( 0.72 + 0.002 x |t-32|) °F, ± ( 0.42 + 0.002 x |t|) °C, where t = temperature. Example: At 32°F accuracy is ± 0.72 °F.
Output (Optional):4-20 mA, M12 Connector
Refresh Rate:3 Seconds
Display:4-digit LCD, 1/2” Height
Display Resolution: See Table 1
RFI Effect:1% or Less Typical
Temperature Effect:<0.01% FS/°C
Ambient Temperature Range:32°F to 122°F (0°C to 50°C)
Storage Temperature Range:-4°F to 158°F (-20°C to 70°C)
Housing Material: Stainless Steel 316
Lens: Plastic Polycarbonate (Standard) or Glass
Probe Material:304 Stainless Steel
Weight:12 oz., Varies by Configuration
Environmental Protection: NEMA 4X/IP67
Power:1 x 3.6V AA Battery (M12 is loop powered 9-36 VDC.)
Battery Life:5 Years Minimum in Continuous Mode
Electronic Display Temperature Limit:
- If the temperature of the electronics in the display housing exceeds 122°F (50°C),
- permanent damage to the display will occur.
- A remote mount is recommended for high temperature applications.

Applications of SI-DTM Digital Remote Reading Thermometer

Freezers, walk-in refrigeration units, food storage cabinets, heating, and ventilation.
Widely specified in the HVAC, commercial and mechanical industry segments
High temp shut down in process applications
Boiler or chiller control

Drawings of SI-DTM Digital Remote Reading Thermometer

Extended reading: Tri Clamp Sanitary Thermometers

Threaded thermometer With integrated transmitter

The thermowell with fixed threaded connection,

or adjustable compression fitting enables direct installation into the process.

All wetted parts and also the case are from stainless steel.

The case and the exchangeable measuring insert are screwed together,

using a knurled nut.

This enables the exchange of the measuring insert,

without having to remove the instrument from the process.

Through the plug connection, the simple installation of the transmitter is ensured.

The integrated electronics convert the temperaturedependent resistance signal of the measuring element into a linear unit signal.

For the signal outputs, 4 … 20 mA, 0 … 10 V and also 0.5 … 4.5 V ratiometric are available.

Sino-Instrument has always been a famous digital thermometer manufacturer, China

Our main products are:

industrial thermometer, WSS bimetal thermometer,

digital bimetal thermometer, remote bimetal thermometer,

shock pressure gauge, temperature transmitter,

liquid level gauge, differential pressure transmitter, pressure transmitter.

Special specifications can be customized/OEM,

according to the drawings or samples provided by the user.

If you need the datasheet, price, or more information about SI-DTM Digital Thermometer/Transmitter

Just Contact Us.

Request a Quote

Please enable JavaScript in your browser to submit the form

KimGuo11

drurylandetheatre.com

SI-DTM Digital Thermometer/Transmitter

Posted on June 21, 2019 by KimGuo11

SI-DTM Digital Thermometer/Transmitter is a high accuracy thermometer with digital display.

It features an IP67/NEMA 4X enclosure and a 1-year battery life.

The Digital Thermometer is perfect for a variety of markets and applications,

where a high accuracy digital readout is required.

Features of SI-DTM Digital Thermometer/Transmitter

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High Accuracy 1,000Ω RTD (Class A)

Water Resistant IP67/NEMA 4X

5 Year Battery Life

4-20 mA Output Available

Low or High Temperature Range Models

Specifications of SI-DTM Digital Thermometer/Transmitter

Accuracy: ± ( 0.72 + 0.002 x | t-32 | ) °F,± ( 0.42 + 0.002 x | t | ) °C, where t = temperature. Example: At 32°F accuracy is ± 0.72 °F.
Sensing Element: RTD, Type Pt1000Ω, Class A
Temperature Ranges:
-58°F to 392°F (-50°C to 200°C) or -328°F to 1112°F (-200°C to 600°C)
Output (Optional) :
4-20 mA, M12 Connector
Refresh Rate : 3 Seconds
Display : 4-digit LCD, 1/2” Height
Display Resolution: See Table 1
RFI Effect :1% or Less Typical
Ambient Temperature Range : 32°F to 122°F (0°C to 50°C)
Housing Material : Stainless Steel 316
Lens : Plastic Polycarbonate (Standard) or Glass
Probe Material :304 Stainless Steel
Weight : 12 oz., Varies by Configuration
Environmental Protection: NEMA 4X/IP67
Power : 1 x 3.6V AA Battery (M12 is loop powered 9-36 VDC.)
Battery Life: 5 Years Minimum in Continuous Mode
Electronic Display Temperature Limit :
If the temperature of the electronics in the display housing exceeds 122°F (50°C), permanent damage to the display will occur. A remote mount is recommended for high or low temperature applications.

Table 1: Display Resolution

Model	Range	Decimal Point
Low Temp, Displays Decimal	-58°F to 392°F (-50C to 200C )	Yes
High Temp, No Decimal	-328°F to 1112°F (-200°C to 600°C)	No

Extended reading: Tri Clamp Sanitary Thermometers

Applications of Digital Thermometer/Transmitter

DTM radial digital thermometers can be hung or mounted on the outer walls of a variety of equipment.

It is recommended to use a high-capacity alkaline battery,

as the working power source for the thermometer.

The effective working hours of the thermometer vary with different batteries.

When the temperature is out of range,

the temperature probe should be immediately removed from the measured medium,

or the temperature of the measured medium should be restored to the measurement range in time,

and the temperature probe cannot have a wide range of temperature drastic changes.

All operations that violate the specified method of use,

will affect the measurement accuracy and service life of the thermometer.

Process Market:

Offshore Oil Rigs
Chemical and Petrochemical Plants
Water and Wastewater Pressure Control
Pulp and Paper
Refineries
Power

Industrial Market:

General Industrial
HVAC
Equipment Skids

Medical and Life Sciences:

Pharmaceutical / Biotech
Food and Beverage

Drawings of SI-DTM Digital Thermometer/Transmitter

Sino-Instrument has always been a famous digital thermometer manufacturer, China

Our main products are:

industrial thermometer, WSS bimetal thermometer,

digital bimetal thermometer, remote bimetal thermometer,

shock pressure gauge, temperature transmitter,

liquid level gauge, differential pressure transmitter, pressure transmitter.

Special specifications can be customized/OEM,

according to the drawings or samples provided by the user.

If you need the datasheet, price, or more information about SI-DTM Digital Thermometer/Transmitter

Just Contact Us.\

Request a Quote

Please enable JavaScript in your browser to submit the form

KimGuo11

drurylandetheatre.com

SI-WSS Tri Clamp Sanitary Thermometers

Posted on June 21, 2019 by KimGuo11

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

Sino-Inst’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.
Sanitary thermometers are ideal for the food, beverage and pharmaceutical industries.

LEARN MORE

Features of SI-WSS Sanitary Bimetal Thermometers

3-A Conformance Certificate Included

Made to ASME B40.3 Specifications

Accuracy ± 1% Full Scale. (ASME B40.3)

All-Stainless Construction

Hermetically Sealed (ASME B40.3)

Silicone Fillable for Vibration

Standard and Custom Stem Lengths

Standard External Reset

Tri-Clamp® Design for Fast Installation and Removal

OEM Logo Dials/Custom Dials

Specifications of SI-WSS Sanitary Bimetal Thermometers

Accuracy: ± 1% Full Scale (ASME B40.3 Grade A)
Dial Size: ( 3”, 4”, or 5” ) 63 up to 150 mm
Dial Material:
- Anodized aluminum with black marks on satin matte finish background;
- White or Hi-Vis™ background available.
Stem Length: 2.5 – 24″, other lengths available
Stem Diameter: 1/4” (std)
Head, Bezel, Mounting Bushing, Stems: 300 Series SS, 316SS (optional)
Operating Conditions:
- The head temperature should not exceed 200°F (150°F if silicone filled).
- The stem should not be exposed to continuous temperatures exceeding 50% over-range or 800°F(550°F if silicone filled).
Temperature Ranges: See inside back cover of temperature catalog for the complete list of ranges.
Case Rating: IP67, NEMA 6 Rated (Hermetically sealed per ASME B40.3)
Lens: Glass (std), Acrylic, Polycarbonate, Tempered Glass, Laminated Safety Glass
Immersion: Minimum 2” in liquid, and 4” in gas for most ranges. Certain ranges require up to 4” in liquids & 5” in gas
Mounting Connection: 1/2” NPT (std), 1/4” NPT, 3/4” NPT, Plain Hex Bushing, 1/2” BSPT, 1/2” NPT Union, Sanitary Tri-Clamp®
Temperature Sensing Area: Last 2” to 4” of the stem

Note:

Thermowells should be used whenever the stem or bulb would be exposed to pressure, corrosion, velocity, abrasion or shear forces.

Thermowells also make it possible to remove the thermometer, without losing pressure or the contents of the process.

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

Care of Sanitary Surfaces

All Sino-Instrument 3-A marked sanitary instruments have carefully prepared Wetted Surfaces.

These surfaces contain no cracks or crevices, where germs could breed, and they are polished to a maximum roughness average (Ra) of 32.

The “wetted surfaces” of an instrument are the surfaces, that will come in contact with your process fluid.

Consult the diagrams below to see the wetted surface, for the instrument you have received.

All Sino-Instrument sanitary instruments are shipped with packaging that protects the wetted surfaces.

To preserve the sanitary compliance of the instrument, CARE SHOULD BE TAKEN to prevent any scratching, denting, or abrasion of the wetted surfaces prior to or during installation.

Drawings of SI-WSS Sanitary Bimetal Thermometers

The working principle of Tri Clamp Sanitary Thermometers:

Bimetal thermometers measure temperature through the inside of the system. The temperature sensing is realized by the coil spring bimetallic sheet made of bimetallic material.

Its bimetal material is composed of two inseparable metal sheets. Because the thermal expansion coefficients of the two metal sheets are different. Therefore, different degrees of stretching deformation will occur under the condition of temperature change. This stretching deformation is approximately proportional to temperature.

One end of the metal sheet is fixed and the other end is fixed integrally with the indicating shaft. Therefore, when the metal sheet is stretched and deformed, the indicator shaft is driven to rotate and the corresponding temperature value is indicated on the dial.

SI-WSS Serial code

Model	Nominal diameter D (mm)	Scale range ℃	Graduation mark ℃	Insertion length L (mm)	Protecting pipe length d (mm)	Installation screw thread mm

WSS-3	60	0-50 0-100 0-150 0-200 0-300 0-400 0-500	1 2 2 5 5 10 10	75;100; 150;200; 250;300; 400;500	6	M16×1.5






WSS-4 WSSX-4	100				10	M27×2

WSS-5	150				10

SI-WSS Sanitary Bimetal Thermometers Dimension

Model	Dimension mm
Model	D	H	L	L1	L2	L3	M
WSS-30	60	/	75;100; 150;200; 250;300; 400;500;	62	12		16×1.5



WSS-31		46		60
WSS-32		44		55
WSS-40	100	/		72	16		27×2
WSS-41		46		94
WSS-42		44		82
WSS-48		58		64
WSS-50	150	/		72	16
WSS-51		46		112
WSS-52		44		82
WSS-58		58		64
WSSX-401	100	/		72	16	42	27×2
WSSX-411		46		94
WSSX-421		44		82
WSSX-481

If you need the datasheet, price, or more information about SI-WSS Bottom Connect Bimetal Thermometer.

Just Contact Us.

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Sino-Inst, Manufacuturer for Tri Clamp Sanitary Thermometers. Also known as clamp flange bimetal thermometer, chuck thermometer, sanitary chuck thermometer, pipeline thermometer, industrial thermometer. Widely used in pharmaceutical, food machinery industry and other fields.

Sino-Inst’s Tri Clamp Sanitary Thermometers, made in China, Having good Quality, With better price. Our Temperature measurement instruments are widely used in China, India, Pakistan, US, and other countries.

Request a Quote

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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.

Features of Hydrostatic Level Sensor

Standards:

Specifications of Hydrostatic Level Sensor

Applications of Hydrostatic Level Sensor

Hydrostatic level measurement: Measuring Principle

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

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

Hydrostatic level sensor in use

FAQ

How does a hydrostatic level sensor work?

How is hydrostatic pressure measured?

What is the hydrostatic level sensor?

What is the water level sensor?

What is the ultrasonic level sensor?

What is meant by hydrostatic pressure?

Features of SI-10 Liquid pressure sensor

Specifications of Liquid Pressure Sensor

Applications of SI-10 Liquid pressure transducer

How does a water pressure sensor work?

Liquid pressure sensor Calibration

Differental pressure liquid level sensor

Water pressure sensor

Q & A

How does pressure sensor work?

What is a capacitive pressure sensor?

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

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

How do you test a pressure sensor?

What is the difference between pressure switch and pressure transmitter?

Pressure sensors for corrosive liquids and gases

Features of SI-PCM261 Submersible Pressure Transducer

Specifications of Submersible Pressure transmitter

Applications of Submersible Pressure transducer

Submersible pressure transducer installation

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

What is a submersible pressure transducer?

Precise level and temperature measurement with HART®communication

Why we use the 4 20mA in transmitting signal?

Optimized electronics for battery operation

Safety also in hazardous areas

FAQ

What is a pressure transducers?

Do you have lighting protection?

What is the max depth?

Features of the diaphragm pressure gauge

Specifications of SI-D100 Diaphragm pressure gauge

Connection threads and materials of SI-D100 Diaphragm pressure gauge

Options of SI-D100 Diaphragm pressure gauge

What is Diaphragm pressure gauge?

Diaphragm pressure gauge working principle

diaphragm pressure gauge advantages and disadvantages

Applications Of The Diaphragm Pressure Gauge

what is the function of pressure gauge?

Difference between bourdon tube and diaphragm pressure gauge

Frequently Asked Questions

What is a diaphragm in pressure gauge?

What is capsule pressure gauge?

What does diaphragm measure?

What are the different types of pressure gauges?

More pressure measurements and applications

Features of Deep Well Water Level Sensor:

Specifications of Deep Well Water Level Sensor

Applications of Deep Well Water Level Sensor

Submersible pressure transmitter for level measurement

How this Water Level Sensor Works

Deep Well Water Level Sensor Installation:

Well Water Level Sensor calibration method:

Precautions for using Well Water Level Sensor:

FAQ

How do I check the water level in my well?

How does the water level sensor work?

Features of Differential Pressure Gauge

Specifications of Differential Pressure Gauge

What is a differential pressure gauge?

Principle of differential pressure gauge

Differential Pressure Gauge Application

Dwyer Magnehelic series 2000 differential pressure gauge

Differential pressure gauge price

Differential pressure gauge installation

FAQ

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