Turbine Flow Meter Application Case: Demineralized Water

Turbine flow meter is a device used to measure the flow rate of fluids by using a turbine to detect changes in flow velocity. Well, in pharmaceutical manufacturing, precise flow measurements are crucial for ensuring product quality, consistency, and safety. That’s where turbine flow meters come in.
In this blog post, we’ll be taking a closer look at how turbine flow meters are used to measure demineralized water flow in the pharmaceutical industry. And the benefits they provide. So, let’s dive in and explore this exciting application case together!

Turbine Flow Meter Application Case: Demineralized Water

A turbine flow meter is a type of flow meter that works by measuring the velocity of a fluid or gas as it passes through a turbine rotor. Turbine flow meters are commonly used to measure the flow of liquids and gases in a wide range of applications. They offer a high level of accuracy, especially in high flow rate applications, and can be used for both clean and dirty fluids. Turbine flow meters are also relatively easy to install and maintain, making them a popular choice in many industries.

The working principle of the turbine flowmeter is that a turbine is placed in the center of the pipe, and the two ends are supported by bearings.

As the fluid passes through the flowmeter tubes, it strikes the turbine blades. Generates driving torque to the turbine. Make the turbine rotate by overcoming the conflicting moment and the fluid resistance moment.

In a certain flow range, for a certain fluid medium viscosity, the rotational angular velocity of the turbine is proportional to the fluid flow velocity.

Thus, the fluid flow rate can be obtained from the rotational angular velocity of the turbine. The fluid flow through the pipe can then be calculated.

Turbine flow meters are widely used in various industries for measuring the flow rate of liquids and gases. Here are some common applications of turbine flow meters:

Petroleum industry: Turbine flow meters are used to measure the flow of crude oil, refined products, and natural gas in pipelines and other process applications.

Chemical industry: Turbine flow meters are used to measure the flow of acids, alkalis, solvents, and other chemicals in various chemical processing applications.

Water and wastewater treatment: Turbine flow meters are used to measure the flow of water and wastewater in municipal water treatment plants, wastewater treatment plants, and other applications.

Food and beverage industry: Turbine flow meters are used to measure the flow of liquids such as milk, juices, beer, and other beverages in food and beverage processing plants.

Pharmaceutical industry: Turbine flow meters are used to measure the flow of liquids in pharmaceutical manufacturing processes, such as the production of drugs, vaccines, and other medical products.

HVAC industry: Turbine flow meters are used to measure the flow of air and water in heating, ventilation, and air conditioning systems.

Overall, turbine flow meters are widely used in applications that require accurate measurement of flow rate. Such as process control, quality control, and monitoring of production processes.

Demineralized Water Flow Measurement Case Study

Challenges in measuring demineralized water flow

Demineralized water: water that has been softened. That is to say, the water with part or all of the calcium and magnesium ions removed is the water that does not form scale after boiling. Boilers must use this water.

Demineralized water is super important in making medicine because it needs to be pure and clean. But measuring how much of this water is flowing can be tricky for a few reasons.

  1. The water doesn’t conduct electricity very well, which makes it hard to measure with regular equipment that relies on conductivity.
  2. It needs to be measured with really good equipment that won’t make it dirty.
  3. Air bubbles can form in the water, which messes up the measurements and might even break the equipment.
  4. Temperature changes can also mess up the measurements because the water gets thicker or thinner depending on how hot or cold it is.
  5. The equipment that measures the water flow needs to be taken care of and maintained regularly, which can be a big job, especially in large factories.

So, even though measuring the flow of demineralized water is important, it can be a challenge because of these issues.

Demineralized Water Flow Measurement in a pharmaceutical factory.

Soft water flow measurement in a pharmaceutical factory.
Not long ago, we received an inquiry from a customer about a flow meter for measuring softened water.

After communication, I learned that this is a large local pharmaceutical factory. Therefore, after detailed communication, we learned that the customer needs to install a flow meter for measuring the flow of purified water on the equipment in the newly added pharmaceutical workshop. It is convenient for online real-time monitoring of softened water flow. Conducive to the management of ingredients, saving labor and time costs.

Considering the relatively low conductivity of demineralized water, it is not suitable to use electromagnetic flowmeters. We recommended liquid turbine flowmeters with sensitive response and high precision to our customer.

Featured Turbine Flow Meters

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Crude Oil Flow Meter

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So, to sum it up, measuring water flow accurately is really important in the pharmaceutical industry, especially when it comes to demineralized water. But, using turbine flow meters can help us measure the water flow more accurately, even though there are challenges like low conductivity and air bubbles. These meters are also easy to maintain and won’t make the water dirty.

In the future, we can expect to see more use of turbine flow meters in the pharmaceutical industry because everyone wants better and more consistent products. With advances in technology and better understanding of the importance of accurate flow measurement, these meters will probably become even more popular.

As Turbine Flow Meters’ Reliable Manufacturer, Sino-Inst Continue to provide users with cost-effective products and services.

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Ultrasonic Flow Detectors

Ultrasonic flow detectors are an important part of ultrasonic flow meters. Ultrasonic flow detectors are also called ultrasonic transducers. Ultrasonic flow detectors measure the volumetric flow of liquid within closed conduits. Ultrasonic flow meters use transit-time differences for measuring flow rates inside pipes from the outside using electronics and digital signal processing technology.

Featured Ultrasonic Flow Meters Clamp-on

Features of Ultrasonic Flow Detectors

  • Built-in magnet, which can be directly attached to the pipe;
  • Can be used in strong electromagnetic interference occasions;
  • After the junction box is filled with glue, the protection level is IP68;
  • Complete specifications, divided into three models: large, medium, and small;
  • Measuring pipe diameter range DN15-DN6000;
  • The temperature range is -30~90°℃; -30~160℃
  • The measurement liquid is relatively wide, including water, seawater, slurry or oil, acid and alkali, and other homogeneous liquids;
  • Non-contact measurement method, lightweight and small size;
  • The installation of the clamp-on ultrasonic flowmeter probe is simple. And different sizes of probes can detect pipes of different pipe diameters. Under the condition of ensuring accuracy, the clamp-on ultrasonic flowmeter can measure the smallest pipe of DN15. The largest can measure DN6000 pipeline;
  • The external clamp ultrasonic flowmeter does not need to destroy the pipeline in the process of measuring the flow rate. The probe can directly touch the straight pipe section. No pressure loss. The flow measurement can be performed on the already installed pipe;
  • Suitable for measuring pipes of different materials. Common ones are metal pipes: stainless steel, carbon steel, cast iron, etc., plastic pipes, etc. There are also pipes with better sound-permeable materials.

Optional Ultrasonic Flow Detectors

Types Picture Spec. Model Measurement Range Temperature Dimension
Clamp on
Small Size TS-2 DN15~DN100 -30~90℃ 45×25×32mm
Medium Size TM-1 DN50~DN700 -30~90℃ 64×39×44mm
Large Size TL-1 DN300~DN6000 -30~90℃ 97×54×53mm
High Temperature Clamp on Small Size TS-2-HT DN15~DN100 -30~160℃ 45×25×32mm
Medium Size TM-1-HT DN50~DN700 -30~160℃ 64×39×44mm
Large Size TL-1-HT DN300~DN6000 -30~160℃ 97×54×53mm
Mounting Bracket Clamp on Small Size HS DN15~DN100 -30~90℃ 318×59×85mm
Medium Size HM DN50~DN300 -30~90℃ 568×59×85mm
Extended EB-1 DN300~DN700 -30~90℃ 188×59×49mm
High Temperature Mounting Bracket Clamp on Small Size HS-HT DN15~DN100 -30~160℃ 318×59×110mm
Medium Size HM-HT DN50~DN300 -30~160℃ 568×59×110mm
Extended EB-1-HT DN300~DN700 -30~160℃ 188×59×49mm
MoeldX3-φ6.35X3-φ9.53 X3-φ12.7X3-φ15X3-φ20X3-φ25
Weight(KG)0.910.910.90.90.840.84
MoeldX3-φ32X3-φ40X3-φ50X3-φ63X3-φ75X3-φ99
Weight(KG)0.820.880.981.431.521.95

Ultrasonic Flow Detectors Working Principle

Ultrasonic Flow Detectors are also called ultrasonic transducers. In fact, it is a piezoelectric ceramic whose frequency is the same as its resonant frequency. It uses the piezoelectric effect of the material to convert electrical energy into mechanical vibration.

Under normal circumstances, ultrasonic waves are first generated by an ultrasonic generator. It is converted into mechanical vibration by the ultrasonic transducer. The ultrasonic wave can be generated by the ultrasonic wave deriving device and the ultrasonic wave receiving device.

Ultrasonic transducers mainly include shell, acoustic window (matching layer), piezoelectric ceramic disc transducer, backing, lead-out cable, receiver, and other parts.

Among them, the piezoelectric ceramic disc transducer plays the same role as a general transducer. It is mainly used to transmit and receive ultrasonic waves, and above the piezoelectric ceramic disc transducer is the receiver. It is mainly composed of lead cables, transducers, metal rings, and rubber washers. Used as an ultrasonic receiver. Receive the Doppler dial-back signal generated outside the frequency band of the piezoelectric ceramic disc transducer.

Ultrasonic transducers are piezoelectric ceramics that resonate at ultrasonic frequencies. The piezoelectric effect of the material converts electrical signals into mechanical vibrations. The ultrasonic transducer is an energy conversion device. Its function is to convert the input electric power into mechanical power (ultrasound) and then transmit it out. , It consumes a small part of its own power.

Types of ultrasonic transducers: can be divided into piezoelectric transducers, sandwich transducers, cylindrical transducers, inverted horn transducers, and so on.

Frequently
Asked
Questions

Transit Time Ultrasonic Flow Meter adopts the measurement principle of the time difference method. It uses the ultrasonic wave emitted by the sensor to propagate in the flowing fluid. The sound wave propagation speed in the downstream direction will increase, and the backward direction will decrease. In the same propagation distance, there will be different transmission times. According to the difference between the transmission time and the measured The relationship between fluid velocity measures the fluid velocity.

The flow rate of the fluid is different in different positions in the tube. The flow rate in the center of the tube is faster than the flow rate near the wall of the tube. The flow velocity distribution of the fluid in the pipeline can be represented by the flow velocity cross-sectional distribution diagram.

By setting the flowmeter and considering the cross-sectional distribution of the flow velocity, the average flow velocity can be calculated. Then the volume flow of the fluid can be obtained according to the cross-sectional area of the pipe.

Extended reading: Ultrasonic flow detectors types

Notes:
V measure fluid velocity
M ultrasonic reflection times
D pipe diameter
θ The angle between the ultrasonic signal and the fluid
T up The time when the downstream sensor transmits the signal to the upstream
T down Time from upstream sensor to downstream
ΔT = T up – T down

Guess You’ll Like: Ultrasonic flow meters types & technical guide

Doppler ultrasonic flowmeter uses the physical principle of Doppler frequency shift to measuring the water flow velocity. Therefore, the Doppler ultrasonic flowmeter is suitable for measuring fluids containing solid particles or air bubbles. Not suitable for measuring pure water.

The scope of use includes:
Natural rivers, artificial rivers, farmland channels, urban sewers, corporate sewage outlets, sewage treatment plants, etc.

The products comply with the SL/T 186-1997 standard.

It is suitable for environments that require continuous and accurate measurement of flow rate and flow rate. It has obvious advantages such as convenient installation and maintenance, high reliability, and high precision.

Ultrasonic flow detectors are also called ultrasonic transducers. Or it is often understood by people as an ultrasonic flow sensor.

Ultrasonic flowmeter is an application of ultrasonic, which measures the flow of liquid by applying the speed difference method.

  • Can do non-contact measurement;
  • No flow obstruction measurement, no pressure loss;
  • It can measure non-conductive liquids, which is a supplement to the electromagnetic flowmeter for unobstructed measurement;
  • Except for the pipe section type with measurement, there is generally no need for actual flow calibration;
  • In principle, it is not limited by pipe diameter, and its cost is basically independent of pipe diameter.

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Sino-Inst, Manufacturer for Ultrasonic Flow Meters. It can measure a single sound-conducting liquid medium of DN 25—150mm. It can measure even liquids such as water, seawater, oil, and slurry.

Sino-Inst’s Ultrasonic Flow Meter, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, the US, and other countries.

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

4-20mA to 0-10v voltage, this is I/V conversion. That is current-voltage conversion, usually used for long-distance signal transmission in the industry.

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

There are two methods: one is to do it yourself with an operational amplifier. The other is to buy ready-made products, such as a 4-20MA/0-10V current-to-voltage isolation converter.

4-20mA is the standard output of our measuring instrument. Such as pressure transmitter, temperature transmitter, flow meter, liquid level transmitter, and so on.

In the field of industrial measurement and control, we often encounter the following problems:

How to convert 0-5V to 4-20mA, 0-20mA or 4-24mA?

How to convert 0-10V to 4-20mA, 0-20mA or 4-24mA?

How to transform ±5V, ±10V AC voltage signal into 4-20mA, 0-20mA, or 4-24mA DC current signal?

4-20mA means that the minimum current is 4mA and the maximum current is 20mA.

The industry generally needs to measure various non-electrical physical quantities, such as temperature, pressure, speed, angle, etc. They all need to be converted into analog electrical signals before they can be transmitted to the control room or display equipment hundreds of meters away. This device that converts physical quantities into electrical signals is called a transmitter. The most widely used in the industry is to use a 4-20mA current to transmit analog quantities.

4-20mA

  • The general input impedance of 4-20mA is 250-300 ohm, which is not easy to have interfered. But maintenance measurement is more troublesome;
  • 4-20ma DC signal can provide power. In addition, it is not affected by the load size within a certain range, and has strong anti-interference ability.
  • 4-20mA can realize two-wire transmission, saving wires.
  • The current signal is suitable for long-distance transmission, but the current signal has weak anti-interference ability, and shielded wires are generally used.

0-10V

  • 0-10v are generally high-impedance inputs and are susceptible to interference. But maintenance, measurement and calculation are all very convenient.
  • 0-10V, is active, three-wire system, or four-wire system.
  • The voltage signal is stable and anti-interference is strong, but it is not suitable for long-distance transmission (with voltage drop);

The 4~20ma signal is the sensor transmission signal commonly used in industrial transmitters. It does not have a fixed-line voltage. The current is constant during transmission and the voltage changes with the load.

For our measurement and control instruments, it depends on whether your instrument wiring is a four-wire system or a two-wire system.

The four-wire system may be AC220V or DC24V;
Two-wire system or three-wire system, generally DC24V.

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

4-20mA standard signal conversion

Common standard analog signals are: 0-5V, 0-10V, ±5V, ±10V, 4-20mA, 0-20mA or 4-24mA. Common transmitters or sensors use one or more of the above formats to output standard signals.

Common secondary meters or acquisition cards generally accept input signals of one or more of the above formats.

When the output signal of the transmitter or sensor is different from the input signal format of the secondary instrument or acquisition card, we need to add a converter between them.

Because the 4-20mA standard signal has the advantages of strong anti-interference ability and no attenuation in the transmission process, it has been widely used in the field of measurement and control.

Often in order to achieve interface compatibility or improve electromagnetic compatibility, it is necessary to convert 0-5V, 0-10V and other standard voltage signals into 4-20mA standard current signals. Or the 4-20mA current signal needs to be converted into a 0-5V or 0-10V standard voltage signal suitable for the input of the acquisition card.

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

I have a pressure transmitter here that outputs a current of 4-20mA. As the input signal of the inverter. Now it is required to change the input signal of the inverter to a voltage signal. That is, the current of 4-20mA should be replaced with a voltage of 0-5V or 0-10V. The inverter has two inputs: 0-5V and 0-10V. Excuse me, how can it be transformed?

Answer: There are two schemes to achieve:

1.Use a hardware circuit to convert the input 4-20mA current signal into 0-5V or 0-10V voltage signal. See the circuit diagram below:

Connection:

  1. Select the A input port: connect A+ and RA together, connect an external 4-20mA current input signal, and connect the A- terminal to the PLC common point M. A input port is set to 0~20mA current input mode.
  2. The analog output port uses voltage output port V0, its M0 port is connected to the common terminal M, and the output port is set to voltage output mode: 0~10V (or 0~5V).

2.Use a signal converter

The signal converter converts the DC current or voltage signals of various devices on the site into the required DC signals for isolation and transmission and then outputs them to other instruments. The signal isolator can effectively eliminate ground return. Solve the problems of industrial field interference and signal conversion, transmission, and matching.

It is widely used in data acquisition, signal transmission and conversion, PLC, DCS, and other industrial measurement and control systems in electrical, power, telecommunications, steel, petrochemical, sewage treatment, environmental protection engineering, aerospace, building automation, and other fields. It is used to complete and supplement the system simulation I/O plug-in function. Increase
The applicability of the system and the reliability of the on-site environment.

Main Specifications

  • Measurement: DC current, DC voltage, etc.
  • Accuracy: ≤±0.1% F·S
  • Power consumption: <1W (when 24VDC power supply)
  • Impedance: current input ≤100Ω, voltage input ≥500KΩ
  • Power supply: DC24V, AC220V or customized
  • Isolation: Input, output, and power supply are completely isolated
  • Support live hot swap operation. Easy to unload, high precision, high linearity, strong anti-interference
  • Long-term work stability
Input signalEnter parameter codeOutput 1Output 2Power supply
A DC power supply
V DC voltage
Current Range
A420 4-20mA
A020 0-20mA
A010 0-10mA
T customer self-determined;

Or voltage range
V0100-10V
V15 1-5V
V075 0-75mV
V6
0-600V
T customer self-determined
V010 0-10V
V15 1-5V
A4204-20mA
A0100-10mA
T customer self-determined
V0100-10V
V151-5V
A420 4-20mA
A0100-10mA
T customer self-determined
No input
D DC24V
A AC220V
T customer self-determined

No matter which WaterFlow Meters you choose. The signal output by WaterFlow Meters, such as 4-20mA. The flow signal can be connected to a paperless recorder. Carry out multi-channel flow signal monitoring.

Our paperless recorder, also known as Digital Chart Recorder. also has such a function. Support signal input and output. You can configure appropriate functions according to your own needs. What Is A Digital Chart Recorder?

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Sino-Instrument offers a variety of transmitters and sensors that support signal output. Including 4-20mA, 0-10V, 1-5V, etc.

About 30% of these are 4-20ma Pressure Transducers, 30% are Flow Meters, and 20% are Level Transmitters, 20% are 4-20ma Temperature transmitters.

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

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

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

Low-Pressure Transducers 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.

Ultrasonic Clamp on Flow Meter

Ultrasonic Clamp on Flow Meter is composed of an integrated host and external clamp on sensors. Clamp on Flow Sensors are available at room temperature and high temperature.

Clamp on flow meter (Model: 2000) is composed of an integrated host and ultrasonic clamp on sensor. Clamp on flow meter is widely used in online flow measurement of various liquids. Just stick the external clamp sensor on the pipe surface. Compared with the traditional flowmeter, it does not need to cut off the pipe and flow. The installation is convenient and quick, and the non-destructive installation is truly realized.

Clamp on Flow Meter Reference price: USD 470.00/pc

Sino-Inst offers a variety of  Ultrasonic flow meters for flow measurement. If you have any questions, please contact our sales engineers.

Features Of Ultrasonic Clamp-on Flow Meter

  • High Accuracy measuring 
    • Linearity: better than 0.5%, Repeatability: better than 0.2%, Accuracy: better than ±1% 
  • Wide Measuring Range 
    • Several types transducer for selection, measuring pipe size from DN15mm to DN6000mm
  • English menu
    • Different version UFM can support English display, easy to operate
  • High Reliability
    • Adopt low voltage, multi-pulse technology to improve accuracy, useful life and reliability
  • Strong Anti-interference
    • Dual-balance signal differential receiver/driver circuit to avoid interference of converter, TV tower, high voltage line etc.
  • Powerful Recording Function
    • Automatically record the following data:
    • 1. The totalizer data of the last 512 days/128 months/5 years
    • 2. The time and corresponding flow meter of the last 64 times of power on and off events
    • 3. The working status of the last 32 days

Optional transducers for Ultrasonic Clamp on Flow Meter

Optional Host

According to different installation condition, there are many models separated ultrasonic flowmeter for selection:

Wall-mount-plastic
Wall-mount-cast aluminum
Panel-mount
Modular host
Explosion-proof
Fixed Mounted

Specifications of Ultrasonic Clamp on Flow Meter

Item Performance and Parameter
Convertor Principle transit-time ultrasonic flowmeter
Accuracy

Flow: over 1%-2%(battery-powered supply over ±2% ),Heat: over ±2%,Repeatability: over 0.2%

Display

2×20 character LCD with backlight, support the language of Chinese, English and Italy Convertor dimension:170*180*56cm

Operation Support 16 key light touch keyboard and the Simulation keyboard software
Signal Output

1 way 4~ 20mA output, electric resistance 0~ 1K,accuracy0. 1%

1 way OCT pulse output ( Pulse width 6 ~ 1 0 0 0 ms,default is 2 0 0 ms)

1 way Relay output
Signal Input

3 way 4~ 20mA input, accuracy 0. 1%,acquisition signal such as temperature, press and liquid level

Connect the temperature transducer Pt100, can finish the heat/energy measurement

Data interface

Insulate RS485 serial interface, upgrade the flow meter software by computer, support the MODBUS, METER-BUS etc.

Other Function Automatically remember the previous flow/energy data of 512 days,  128 months and 10 years
Automatically remember the previous flow/energy data of 512 days working condition and check it
Automatically remember the previous 32 times power on/off time and flow rate
Special Cable

Twisted-pair cable, generally, the length under 50 meters; Select the RS485 communication. The transmission distance can over 1000m.

Pipe Installation Condition Pipe Material

Steel, Stainless steel, Cast iron, Copper, Cement pipe, PVC, Aluminum, Glass steel product, liner is allowed.

Pipe Diameter 15mm—6000mm
Straight length pipe

Transducer installation should be satisfied: upstream10D, downstream 5D, 30D from the pump.

Measuring Medium Type of Liquid

Water (hot water, chilled water, city water, sea water, waste water, etc.);  Sewage with small particle content; Oil (crude oil, lubricating oil, diesel oil, fuel oil, etc.);  Chemicals (alcohol, acids, etc.); Plant effluent; Beverage, liquid food;  Ultra-pure liquids; Solvents and other liquids

More about: Sewage Flow Meter Selection

Temperature

Standard Transducer: -30–90℃; High-temperature transducer: -40–160℃

Turbidity No more than 10000ppm and less bubble
Flow rate 0–±12 m/s
Working Environment Temperature Main Unit: -20–60℃
Flow transducer: -40–160℃; 
Temperature transducer: according to the customer’s demands.
Humidity

Main Unit: 85% RH; Flow Transducer: Ip67

Power Supply DC  24V or AC  85-264V
Power Consumption 1.5W

Extended reading: Portable ultrasonic flow meter for water

Ultrasonic clamp on flow meter Pros and Cons

Advantages of Ultrasonic clamp on flow meter

  • The clamp on ultrasonic flowmeter is convenient to carry, easy to operate, intuitive to read data, and can memorize and save the read data;
  • The measurement liquid is relatively wide, including water, sea water, slurry or oil, acid and alkali and other homogeneous liquids;
  • Non-contact measurement method, light weight, small size;
  • The installation of the clamp-on ultrasonic flowmeter probe is simple, and probes of different sizes can detect pipes of different pipe diameters. Under the condition of ensuring accuracy, the clamp-on ultrasonic flowmeter can measure pipes with a minimum of DN15 and a maximum of DN3000. Pipeline
  • The external clamp ultrasonic flowmeter does not need to destroy the pipeline during the flow measurement process, and the probe can directly touch the straight pipe section without pressure loss, and the flow measurement can be performed on the installed pipe;
  • Suitable for measuring pipes of different materials. Common metal pipes (stainless steel, carbon steel, cast iron, etc.), plastic pipes, etc., and some pipes with better sound-transmitting materials.

Disadvantages of Ultrasonic clamp on flow meter

Because the temperature of the measured liquid is limited by the temperature resistance of the coupling material between the ultrasonic probe and the pipe, and the original data of the sound transmission velocity of the measured liquid at high temperature is incomplete. At present, the general ultrasonic flowmeter can only be used to measure the fluid below 200 ℃.

The measurement circuit of ultrasonic flowmeter is more complicated than that of general flowmeter. This is because the flow velocity of liquid in general industrial measurement is often a few meters per second, and the propagation speed of sound waves in the liquid is about 1500 m/s.

Therefore, the change of the measured fluid velocity (flow) has the greatest impact on the change of sound velocity, which is also on the order of 10-3. If the accuracy of measuring the flow velocity is required to be 1%, the accuracy of the measurement of the speed of sound needs to be 10-5~10-6 orders of magnitude. Therefore, a complete measurement circuit can be achieved.

This is the reason why ultrasonic flowmeters can only be applied in practice only under the premise of the rapid development of integrated circuit technology.

The measurement accuracy is not high enough. At present, the accuracy level of our ultrasonic flowmeters is generally level 1 or lower. Ultrasonic flow meters are greatly affected by external conditions. For example, high electric and magnetic fields near the measuring pipeline will affect the measurement of the ultrasonic flowmeter.

Read more about: Non-invasive Ultrasonic Tank Level Sensor Working Principle

Portable clamp on flow meter

The portable ultrasonic flowmeter ( Model: 3000H) uses a non-invasive sensor to measure liquid flow. The installation process is extremely simple. There is no need to destroy the pipeline during the measurement process and no need to stop production. The sensor is not in contact with the measured medium. Battery powered, small size, light weight and easy to carry. Realize the real sense of mobile flow measurement, online detection, is a real sense of portable ultrasonic flowmeter.

Handheld Ultrasonic Flow Meter

Handheld Ultrasonic Flow Meter ( Model:2000H) has been successfully applied to measurement work in various industries. The measuring range is 20-6000mm (0.5-20 inches). A non-contact measurement method is adopted. Flexible operation and easy to carry. Conductive or non-conductive, corrosive or non-corrosive liquids can be measured. Various fluids: water, pure water, sewage, sea water, chemical fluids, river water, fuel Oil etc. can be measured.

Check more 1 Inch Flow Meters.

Clamp on Ultrasonic Flow Meter

Clamp on Ultrasonic Flow Meter ( Model: 3000S) is composed of a host and an external clamp sensor. The flow measurement of various liquids can be completed by simply sticking the external clamp sensor on the surface of the pipeline. Compared with the traditional flowmeter, it does not need to cut off the pipe and flow, the installation is convenient and quick, and it truly realizes the lossless installation. Compared with the common TDC algorithm of other manufacturers, TGA measurement technology is an algorithm for measuring process time with higher speed and higher accuracy.

Clamp on liquid flow meter

The external clamp ultrasonic flowmeter can measure the flow rate of a single uniform liquid that can conduct ultrasonic waves, such as water, sea water, sewage, acid and alkali, alcohol, beer, various oils, etc.

Read more about Digital Beer Flow Meters for Sale|Brewery-Wine-Craft Beer Brewing Process management system 

Clamp on water flow meter

Clamp on water flow meter refers to the use of external clamp-on ultrasonic flow meters to measure water flow. Especially when other flow meters are not applicable.

For example, the flow measurement of ultrapure water equipment only uses an external clamp-type ultrasonic flowmeter.
why?

Ultra-pure water is non-conductive and has extremely high hygiene requirements, so the clamp-on ultrasonic flowmeter is the first choice. The general contact measurement and conductive medium measurement methods will be excluded. Let’s analyze it in detail below.

First, let’s take a look at the physical characteristics of pure water and ultrapure water. The filter cartridge of the ultra-clean filter device is made of pure polypropylene, and activated carbon is used to remove inorganic and organic trace pollution of ion exchange resin (nuclear grade) and adsorber resin. Dedicated ion exchange resin (nuclear grade) removes inorganic ions. After the adsorber resin removes dissolved organic matter. The pore size of the disinfection filter is 0.2um. The conductivity of pure water and ultrapure water obtained through such purification equipment: 0.055uS/cm. Bacteria content: 1CFU/ml, generally used in fields with high requirements such as biopharmaceuticals.

Secondly, we look at the application conditions of various flow meters.

In addition to measuring the volume flow of general conductive liquids, the electromagnetic flowmeter can also be used to measure the volume flow of strong corrosive liquids such as strong acids and alkalis and uniform liquid-solid two-phase suspension liquids such as mud, mineral pulp, and paper pulp. Since the conductivity of pure water is only 0.055, it cannot be measured.

Look at the turbine flowmeter again. Turbine flowmeter is a contact measurement, and pure water and ultra-pure water have particularly high requirements for materials, so the main material must be 316L when manufacturing, and the use of sanitary clamp joints will increase the production cost immediately.

Clamp on water flow meter is a non-contact meter. It can not only measure the flow of medium with large pipe diameter, but also can be used to measure the medium that is not easy to touch and observe. Its measurement accuracy is very high, and it is almost free from the interference of various parameters of the measured medium. In particular, it can solve the flow measurement problems of strong corrosive, non-conductive, radioactive and flammable and explosive media that other instruments cannot.

In summary, the ultrasonic flowmeter is the best choice for the flow measurement of the purified water equipment in the ultrapure water system.

FAQ

The clamp-on flow meter is a flow meter with an external clamp-on flow sensor. Most flow meters are in-line pipe section mounts. The Clamp-on flow meter is a flow meter that only needs to be clamped on the outside of the pipe to measure the flow rate. This is important for many pipes that cannot be cut and bored.

The installation of the ultrasonic flow meter needs to be done according to the operating instructions of the ultrasonic. Because of different forms of ultrasonic flowmeter, the installation method is also different.

Sino-Inst supplies ultrasonic flow meters with an accuracy of mostly 1%. This accuracy can meet the needs of most users. Of course, there are other flowmeters with higher accuracy. For example, 0.5% electromagnetic flowmeter.

Users can choose according to your measurement requirements.

Mechanical Flow Meters

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Totalizer Flow Meters

Totalizer flow meter is also called Totalizing flow meter. It refers to the totalizing function of…

Sino-Inst, Manufacuturer for Ultrasonic Clamp on Flow Meters. It can measure a single sound-conducting liquid medium of DN 25—1200mm. It can measure even liquids such as water, sea water, oil, and slurry.

Sino-Inst’s Ultrasonic Clamp on Flow Meter, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.

Bimetallic Thermometer—-WSS Series

Bimetallic thermometer is a kind of field testing instrument for measuring low and medium temperature. It is used especially in industry.

It can directly measure the temperature of the liquid, vapor and gas within -80℃~+500℃ in a variety of production processes. The bimetallic thermometer is made of a metal sheet which is made into a ring and bend shape. When one end is heated and expanded, it will lead to the rotation of the pointer and the working instrument will show the temperature value of the thermal electric potential.

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

How Does a Bimetallic Thermometer Work?

The working principle of bimetallic thermometer depends on the two fundamental properties of the metal.The metal has the property of thermal expansion, i.e., the metal expand and contract concerning the temperature.The temperature coefficient of all the metal is not same. The expansion or contraction of metals is different at the same temperature.

What Is WSS Series Bimetallic Thermometer And Its Uses?

WSS series bimetallic thermometer is an on-site detection instrument for measuring low and medium temperature. The bimetal thermometer can directly measure the temperature of liquid, steam and gaseous media in the range of -80℃~+500℃ in various production processes.

What Is The Meaning Of Bimetallic?

They are made up of bimetallic strips formed by joining two different metals having different thermal expansion coefficients. Basically, bimetallic strip is a mechanical element which can sense temperature and transform it into a mechanical displacement. This mechanical action from the bimetallic strip can be used to activate a switching mechanism for getting electronic output. Also it can be attached to the pointer of a measuring instrument or a position indicator. Various techniques such as riveting, bolting, fastening can be used to bond two layers of diverse metals in a bimetallic strip. However the most commonly used method is welding. Since two metals are employed to construct a bimetallic strip, hence they are named so.

Read more about Thermometer

Characteristics

  1. It can display the temperature on-site, which is intuitive and convenient;
  2. It is safe and reliable with long service life;
  3. With a variety of structural forms, which can meet different requirements.

Main Technical Parameters

  • 1.Product implementation standard:JB/T8803-1998
  • 2.Nominal diameter of dial:60,100,150
  • 3.Precision grade:(1.0),1.5
  • 4.Thermal response time:≤40s
  • 5.Protection level:IP55
  • 6.Angle adjustment error Angle adjustment error should not more than 10% of the range
  • 7. Return difference: the return difference of the thermometer should not be more than the absolute value of the error limitation.
  • 8. Repeatability: the repeatability of the thermometer should be no greater than 1/2 of the absolute value of the basic error limitation.

Classification

According to the connection direction of the bimetal thermometer dial and the protective tube, the bimetal thermometer can be divided into four types: axial type, radial type, 135°direction type and universal type.

  1. Axial bimetal thermometer: The pointer plate is connected vertically to the protection tube.
  2. Radial type bimetal thermometer: The pointer disc is connected in parallel with the protection tube.
  3. 135°direction bimetallic thermometer: the pointer disc and the protection tube are connected at 135°.
  4. Universal bimetal thermometer: The connection angle between the pointer plate and the protective tube can be adjusted arbitrarily.
135°type

WSS-420 WSS-520 WSS-421 WSS-521 WSS-422 WSS-522 WSS-432 WSS-532 WSS-424 WSS-524 WSS-425 WSS-525 WSS-526

Axial type

WSS-300 WSS-400 WSS-500 WSS-301 WSS-401 WSS-501 WSS-302 WSS-402 WSS-502 WSS-303 WSS-403 WSS-503 WSS-304 WSS-404 WSS-504 WSS-305 WSS-405 WSS-505 WSS-306 WSS-406 WSS-506

Radial type

WSS-310 WSS-410 WSS-510 WSS-311 WSS-411 WSS-511 WSS-312 WSS-412 WSS-512 WSS-313 WSS-413 WSS-513 WSS-314 WSS-414 WSS-514 WSS-315 WSS-415 WSS-515 WSS-316 WSS-416 WSS-516

Universal type

WSS-480 WSS-580 WSS-481 WSS-581 WSS-482 WSS-582 WSS-483 WSS-583 WSS-484 WSS-584 WSS-485 WSS-585 WSS-586 WSS-486

Installation Requirements

For the installation of bimetal thermometers, attention should be paid to accurate temperature measurement, safety and reliability, and convenient maintenance, and does not affect equipment operation and production operations. The above requirements must be met. When selecting the installation position and insertion depth of the thermal resistance, the following should be paid attention to A few points:

(1) In order to have sufficient heat exchange between the measuring end of the thermal resistance and the measured medium, the location of the measurement point should be selected reasonably and try to avoid installing thermal resistance near the dead corner of the valve, elbow, pipeline and equipment.

(2) The thermal resistance with protective sleeve has heat transfer and heat dissipation loss. In order to reduce the measurement error, the thermocouple and thermal resistance should have sufficient insertion depth:

  • a. For the thermal resistance measuring the temperature of the fluid in the center of the pipeline, the measuring end should generally be inserted into the center of the pipeline (vertical installation or inclined installation). If the pipe diameter of the tested fluid is 200 mm, the insertion depth of the thermal resistance should be 100 mm;
  • b. For temperature measurement of high-temperature, high-pressure and high-speed fluids (such as main steam temperature), in order to reduce the resistance of the protective sleeve to the fluid and prevent the protective sleeve from breaking under the action of the fluid, the shallow insertion method of the protective tube or the hot sleeve type can be adopted Thermal resistance. For shallow plug-in thermal resistance protection sleeves, the depth of insertion into the main steam pipe should not be less than 75mm; the standard insertion depth of thermal-jacket thermal resistance is 100mm;
  • c. If you need to measure the temperature of the flue gas in the flue, even though the flue diameter is 4m, the thermal resistance insertion depth is 1m;
  • d. When the insertion depth of the measuring original exceeds 1m, it should be installed vertically as much as possible, or a support frame and protective sleeve should be installed.

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