The Small Pressure Transducer/Sensor is characterized by its small size, the shortest can be 5CM. In some occasions where the installation location is small, it has an irreplaceable volume advantage. Small Pressure Transducer is that the pressure of the measured medium acts directly on the diaphragm of the sensor (stainless steel or ceramics). Make the diaphragm produce a micro-displacement proportional to the medium pressure. The resistance value of the sensor is changed, and the change is detected by the electronic circuit. And convert and output a standard measurement signal corresponding to this pressure. The interface, casing and electrical interface of the transmitter can be adapted according to the requirements of the user’s industry.
The Small Pressure Transducer/Sensor is characterized by its small size, the shortest can be 5CM. The interface, casing and electrical interface of the transmitter can be adapted according to the requirements of the user’s industry. The size of Small Pressure Transducer/Sensor also supports customization.
For example, the following product dimensions:
Miniature Pressure Sensor/Transducer
SI-51 Miniature Pressure Sensor/Transducer
Miniature Pressure Sensor is also called Miniature Pressure Transducer. The miniature pressure sensor is a miniature solid-state silicon force sensor integrated with MEMS technology. One-piece miniature stainless steel package. Make it have excellent dynamic performance. Small size, streamlined, strong, compact shape structure.
Product size Φ3, Φ5, M6, M8, M10. Can be specially designed according to specific working conditions;
Small size, streamlined appearance;
split structure. Optional standard voltage, current, digital signal output. Meet the requirements of various working conditions;
High dynamic frequency response, steep rising edge;
Wide measuring range. Any range between -100Kpa~0-10KPa…60MPa;
Low-pressure pressure transmitter is the application of conventional pressure sensor technology extended to the field of ultra-low pressure. While maintaining the original high performance, the pressure range can be as low as 0-5KPa. The advanced design makes this ultra-low pressure transmitter have the characteristics of fast response and good long-term stability.
The basic structure of its measurement part can be regarded as a space divided into two parts by the sensor. Including the case where one space is the entire universe.
When the pressures of these two parts are not equal, the force acting on the sensor causes the sensor to generate displacement or displacement tendency (force), and the pressure can be measured by detecting the displacement or displacement tendency.
Common sensors include diaphragms, spring tubes, and bellows, among which diaphragms are most widely used in transmitters.
There are many types of pressure sensors. Such as resistance strain gauge pressure sensors, semiconductor strain gauge pressure sensors, piezoresistive pressure sensors, inductive pressure sensors, capacitive pressure sensors, resonant pressure sensors, etc.
What’s the Difference Between a Pressure Transducer and a Pressure Switch? Simply put, the Pressure Transducer is a signal conversion and transmission device, and the pressure switch is a control switch device. This is the difference between a Pressure Transducer and a Pressure Switch. Let’s look at their differences in detail. And learn how to choose a pressure transmitter and pressure switch.
What does SCADA stand for? SCADA is the abbreviation of Supervisory Control And Data Acquisition. Namely data acquisition and monitoring control system. SCADA system is also called monitoring configuration software,…
Intrinsically safe type is an explosion-proof type of electrical equipment. When purchasing electrical equipment, do you often hear about intrinsic safety? For example, when ordering pressure transmitters or flow meters…
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?…
The Hydrostatic Pressure Transmitter measures the hydrostatic pressure exerted by a hydrostatic head. Use these hydrostatic pressure transmitters to measure the liquid level in storage tanks, processing vessels, collection tanks,…
What is a ceramic pressure sensor? Ceramic pressure sensors are sensor diaphragms made of ceramic alumina (Al2O3). Ceramic is a material with high elasticity, corrosion resistance, wear resistance, impact, and…
What Is Static Water Pressure? Definition of Static Water Pressure: Static Water Pressure refers to the pressure on water when it is stationary or moving in a straight line at…
High Temperature Pressure Transducer is also called High Temperature Pressure Sensor, or High Temperature Pressure Transmitter. The High Temperature Pressure Transducer is used for applications where the medium temperature exceeds…
What is underwater pressure transducer? Underwater pressure transducer refers to a type of pressure sensor that can be used underwater for a long time. The degree of protection of the…
Small Pressure Transducer/Sensor-Low Cost-High Performance
Sino-Inst is a manufacturer of Small Pressure Transducer/Sensor. Small Pressure Transducers/Sensors have a lower cost than other industrial pressure transmitters. At the same time, Small Pressure Transducer/Sensor can customize high-performance parameters. Such as ultra-high temperature, ultra-high pressure, or micro-scale. Or special anti-corrosion materials, etc.
Sino-Inst is a manufacturer that produces and sells various types of automatic measurement and control instruments. The main products are: hydraulic pressure sensor, liquid level/water level sensor, Miniature Pressure Sensor/Transducer, micro pressure/negative pressure/vacuum pressure sensor, temperature transmitter, load cell and other pressure, differential pressure, liquid level, temperature , weighing sensors and various special pressure sensors and intelligent control systems.
If you need to purchase a Small Pressure Transducer/Sensor, or have any technical questions about Small Pressure Transducer/Sensor, please feel free to contact our engineers.
Request a Quote
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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.
What’s the Difference Between a Pressure Transducer and a Pressure Switch? Simply put, the Pressure Transducer is a signal conversion and transmission device, and the pressure switch is a control switch device. This is the difference between a Pressure Transducer and a Pressure Switch. Let’s look at their differences in detail. And learn how to choose a pressure transmitter and pressure switch.
Difference Between a Pressure Transducer and a Pressure Switch
The Pressure Transducer uses the output as a standard signal, and is composed of a pressure-sensitive element and a conversion circuit. Using the pressure of the measured medium to produce a small change of current or voltage output on the pressure sensitive element.
The transmitter often needs to be used in conjunction with an external amplifier circuit to complete the process from pressure detection to control and display. Since the pressure sensor is a primary component, the signal fed back by the pressure sensor needs to be processed, analyzed, stored, and controlled by the measurement and control system. Make industrial automation equipment and engineering operation control more intelligent.
The pressure switch is a simple control device. When the measured pressure reaches the set value, it will automatically send out an alarm or control the function of turning on or off.
The pressure switch needs to be opened or closed under the set pressure. It can be used for simple control, and the output is the switch value.
The output of the pressure transmitter can be an analog signal or a digital signal. The post-processing is convenient, and it can also be converted into a standard transmitter signal for remote transmission.
If you want to know more about pressure sensors, you can consult Sino-Inst, thank you!
What is Pressure Switch?
A pressure switch is a mechanical switch that is activated by pressure to a set point. The switch is used to control a circuit by turning it on and off. Here the pressure point at which the switch is triggered is called the set point. The pressure threshold at which the switch is disabled is called the cut-off point. With enough force, the contacts can open or close the switch depending on their configuration.
This is a device that activates an electrical contact when a fixed fluid pressure is reached. Typically, this switch has two functions. The main function is to maintain the pressure or reservoir level of the system. The secondary function is to prevent equipment from operating at a lower efficiency or from being harmed. Its notation is as follows:
Structure of the pressure switch
The structure of the pressure switch mainly includes five parts. These are diaphragm, adjustment spring, lever, electrical contacts and terminals.
The diaphragm in this switch acts like a sensing element and is therefore used to detect pressure. This element is usually made of a pressure-sensitive, flexible material.
Adjusting the spring will change the set point or cut point, some switches have separate springs that control the set point and cut point.
The AUTO/OFF lever is used to manually activate or deactivate the switch, this lever is very helpful to turn off the switch throughout the installation or maintenance process. Sometimes, a knob is used instead of a lever, but the principle works the same.
The electrical contacts allow current to flow through them once they are contacted by an external power source. The terminals of the switch are used to connect an external power source to the contacts.
A pressure switch works by operating an electrical contact once a fixed fluid pressure is reached. The switch will make electrical contact when the pressure increases or the pressure decreases from a fixed preset pressure level.
Type of pressure switch
There are two types of pressure switches on the market today, mechanical and electronic.
Mechanical pressure switches are the most widely used due to their lower cost and ease of use compared to electronic pressure switches. These switches can be equipped with a mechanical pressure sensing element that deforms in response to fluid pressure. The different types of mechanical pressure switches are discussed below.
Piston pressure switch This type of switch is the most popular and is widely used in different applications. Once the pressure of the fluid changes, it moves the piston axially, which triggers the switch. The switch can directly or indirectly detect the pressure of the liquid. Therefore, direct inspection mainly involves seals like O-rings. to prevent liquids from entering the components. Whereas indirect detection mainly involves a flexible diaphragm that separates the piston from the fluid.
Diaphragm pressure switch This is a high quality switch primarily developed for safety critical applications. The main benefit of diaphragm pressure switches is that no voltage supply is required for the switching process. The switch consists of a metal membrane that is directly connected to the soaker portion of the switch and the diaphragm that activates the switch. The switch is used for monitoring process pressure and control in different industries such as chemical, petrochemical, natural gas, oil etc.
Bourdon tube pressure switch This is an elastomer or flexible metal tube that attaches to one end of the switch while leaving the other end free to move. Once the pressure of the liquid in the tube rises, it tends to level, and this movement is then used primarily to activate the switch. These switches are suitable for different applications such as chemical, general power stations and petrochemical as long as the operating force is medium to high.
Differential pressure switch This switch is useful when evaluating the force between two points within a system simply connected to two process ports on the upper or lower part of the device. If the pressure difference between the two sides increases by a certain threshold, the switch can be triggered. These switches are suitable for monitoring pressure drops in screens, filters and tank levels.
Electronic pressure switch. It can be used with pressure sensors such as strain gauges. These types of switches have analog capabilities, so they are not limited to an on or off position. Continuous and variable signals can also be transmitted for more precise monitoring. Therefore, these are not only switches, but also measuring instruments or transmitters. Some additional features of these electronic switches are field programmability of switching functions, time delays, hysteresis, set points, etc.
A pressure transducer is a device that converts pressure into a pneumatic signal or an electric signal for control and remote transmission.
It can convert the physical pressure parameters such as gas and liquid felt by the load cell sensor into a standard electrical signal (such as 4~20mADC, etc.). It can be used to supply secondary instruments such as indicating alarms, recorders, and regulators for measurement and indication, and process regulation.
Working Principle of Pressure Transducer
Pressure Transducer Electrical components that feel pressure are generally resistance strain gauges. The resistance strain gauge is a sensitive device that converts the pressure on the device under test into an electrical signal. The most widely used strain gauges are metal resistance strain gauges and semiconductor strain gauges.
There are two types of metal resistance strain gauges: wire strain gauges and metal foil strain gauges. Usually, the strain gauges are tightly bonded to the mechanical strain-generating substrate through a special adhesive. When the stress of the substrate changes, the resistance strain gauge also deforms together. Change the resistance value of the strain gauge, so that the voltage applied to the resistance changes.
The types of pressure transmitters are roughly as follows: resistance strain gauge pressure transmitters, semiconductor strain gauge pressure transmitters, piezoresistive pressure transmitters, inductive pressure transmitters, capacitive pressure transmitters, Resonant pressure transmitter and capacitive acceleration sensor, etc.
Piezoresistive pressure transmitter
The resistance strain gauge is a sensitive device that converts the strain change on the tested object into an electrical signal. It is one of the main components of piezoresistive strain transmitters. There are two kinds of resistance strain gauges, metal resistance strain gauges and semiconductor strain gauges.
Usually, the strain gauges are tightly bonded to the substrate that generates mechanical strain through a special adhesive. When the stress of the substrate changes, the resistance strain gauge also deforms together. Change the resistance of the strain gauge. This changes the voltage across the resistor.
Ceramic pressure transmitter
Principle Corrosion-resistant pressure transmitters have no liquid transfer, and the pressure acts directly on the front surface of the ceramic diaphragm. To make the diaphragm slightly deformed, thick film resistors are printed on the back of the ceramic diaphragm and connected to form a Wheatstone bridge.
Due to the piezoresistive effect of the varistor, the bridge produces a highly linear voltage signal proportional to the pressure and proportional to the excitation voltage. The standard signal is calibrated as 2.0 / 3.0 / 3.3 mV/V according to different pressure ranges. Compatible with strain gauge sensors.
Through laser calibration, the sensor has high temperature stability and time stability. The sensor comes with a temperature compensation of 0-70°C, and can be in direct contact with most media. ,
Diffused silicon pressure transmitter
The pressure of the measured medium acts directly on the diaphragm of the sensor, causing the diaphragm to produce a micro-displacement proportional to the pressure of the medium. The resistance value of the sensor is changed, and the change is detected by the electronic circuit. And convert and output a standard measurement signal corresponding to this pressure.
The piezoelectric materials mainly used in piezoelectric sensors include quartz, potassium sodium tartrate, and ammonium dihydrogen phosphate. Among them, quartz is a natural crystal in which the piezoelectric effect is found. Within a certain temperature range, the piezoelectric properties always exist, but when the temperature exceeds this range, the piezoelectric properties disappear.
Ceramic capacitive sensors are available for measurements in normal or aggressive media. Materials such as gas, gas or liquid, but not prone to precipitation, crystallization or stiffening are recommended. Applied to tank liquid level measurement, sea water, water on board, diesel oil, waste oil.
Selection of pressure switch and pressure transmitter
Both pressure switches and pressure transmitters are intelligent digital display pressure measurement products integrating pressure measurement, display, output and control. When choosing, you only need to remember the following 6 points to know what kind of pressure switch and pressure transmitter to use.
According to the characteristics of pressure switch and pressure transmitter, you can start from the following data that need to be measured:
The measured medium and the actual condition of the medium
The measured pressure range
Required measuring range
The temperature of the working conditions on site
The connection method used in conjunction with the working conditions
Installation location
According to the above 6 points of data and requirements, you can know what kind of pressure switch or pressure transmitter is needed. In addition, pressure switches and pressure transmitters are all non-standard customized products. It can be used according to the site Working conditions to decide.
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The static pressure sensor or static pressure transmitter is based on atmospheric pressure or absolute vacuum, and compares the difference between the measured pressure and atmospheric pressure or absolute vacuum…
Ship Ballast Tank is to point to the ship’s ballast tank to load ballast to adjust the ship’s draft and metacentric height. It is an operation to ensure that the…
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Pressure Transmitter 4-20mA is the most commonly used one in industrial process control. In industrial process control, the measurement and control of pressure has always been a very important parameter…
What is a gas pressure sensor? Gas Pressure Sensors are also called Gas Pressure Transducers. Gas Pressure Sensors convert gas pressure into standard electrical signals, such as 4~20mADC. Measurement, indication…
Sino-Inst is a manufacturer of Pressure Transducer and a Pressure Switch. We produce and sell all kinds of automatic measurement and control instruments and meters. The main products are: hydraulic pressure sensor, liquid level/water level sensor, Miniature Pressure Sensor/Transducer, micro pressure/negative pressure/vacuum pressure sensor, temperature transmitter, load cell and other pressure, differential pressure, liquid level, temperature , weighing sensors and various special pressure sensors and intelligent control systems.
Pressure Transducer and a Pressure Switch are commonly used instruments in industrial production process. The pressure switch turns the switch on or off at your given pressure. The output of the pressure sensor can be an analog signal or a digital signal, which is convenient for subsequent processing, and can also be converted into a standard transmitter signal for remote transmission.
If you need to purchase a Pressure Transducer and a Pressure Switch, or have any technical questions about Pressure Sensor/Transducer, please feel free to contact our engineers.
Request a Quote
Please enable JavaScript in your browser to submit the form
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.
Miniature Pressure Sensor is also called Miniature Pressure Transducer. The miniature pressure sensor is a miniature solid-state silicon force sensor integrated with MEMS technology. One-piece miniature stainless steel package. Make it have excellent dynamic performance. Small size, streamlined, strong, compact shape structure.
What Is Flush Diaphragm Pressure Transducer? A flush diaphragm pressure transducer is a type of pressure sensor that measures the pressure of a fluid or gas by using a diaphragm…
As a clean energy, natural gas is widely used in many aspects such as industrial production, thermal power generation and residential gas heating. Although natural gas pipeline transportation has many…
Different Types of Pressure have different characteristics. Different pressure transmitters bear different pressure types. Common pressure types include absolute pressure, gauge pressure, negative pressure or vacuum, and differential pressure. Each…
The static pressure sensor or static pressure transmitter is based on atmospheric pressure or absolute vacuum, and compares the difference between the measured pressure and atmospheric pressure or absolute vacuum…
Ship Ballast Tank is to point to the ship’s ballast tank to load ballast to adjust the ship’s draft and metacentric height. It is an operation to ensure that the…
Do you know the difference between Pressure Transmitter vs Pressure Gauge? Pressure transmitters and pressure gauges are industrial process instruments used to measure the pressure of media.Understanding the difference between…
Pressure Transmitter 4-20mA is the most commonly used one in industrial process control. In industrial process control, the measurement and control of pressure has always been a very important parameter…
What is a gas pressure sensor? Gas Pressure Sensors are also called Gas Pressure Transducers. Gas Pressure Sensors convert gas pressure into standard electrical signals, such as 4~20mADC. Measurement, indication…
Sino-Inst is a manufacturer of Miniature Pressure Sensors/Transducers. We provide more than 10 types of Miniature Pressure Sensors/Transducers. -100KPa…-1KPa～0KPa…2KPa…10KPa…60MPa range is optional. Can be used for liquid or gas measurement.
SI-51 Miniature Pressure Sensor/Transducer, this series of transmitters adopts a split structure. The sensor is packaged exquisitely and has excellent dynamic performance. It not only solves the limitation of the placement position of the tested working condition, but also ensures the accuracy of subsequent output signals .
Miniature Pressure Sensors are used in aerodynamic research, aircraft and engine tests, wind tunnel tests, fluid mechanics and hydraulic tests, water turbines and underwater weapon tests, biomedicine, manufacturing and other fields. The influence of the field or the placement position, or the working conditions with dynamic frequency response requirements at the same time, can reproduce the changing law of the pulsating flow field without distortion.
If you need to purchase Miniature Pressure Sensor/Transducer, or have any technical questions about SI-51 Miniature Pressure Sensor/Transducer, please feel free to contact our engineers.
Request a Quote
Please enable JavaScript in your browser to submit the form
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.
A flow meter is an instrument used to measure and indicate the volume or mass of a gas or liquid. Simply put, it is an instrument used to measure the flow of fluid in pipes or open channels. Also known as flow indicator, liquid flow meter, flow sensor, etc.
Flowmeters are further divided into differential pressure flowmeters, rotameters, throttling flowmeters, slit flowmeters, volumetric flowmeters, electromagnetic flowmeters, ultrasonic flowmeters, etc. According to the medium, it can be divided into: liquid flowmeter and gas flowmeter.
Flow meter calibration is carried out according to the verification regulations of various flow meters promulgated by the National Metrology Bureau.
For the flowmeters used, except for the standard throttling device, no experimental verification is required. The rest of the flowmeters are almost all verified when they leave the factory. During the use of the flowmeter, it should also be calibrated frequently.
The calibration methods of liquid flowmeter mainly include volumetric method, mass method, standard volume tube method and standard flowmeter comparison method.
The calibration methods of gas flowmeter mainly include sonic nozzle method, servo standard flowmeter comparison method and bell jar method.
Why is it important to calibrate a flow meter?
Most people recognize that a flow meter should be calibrated before it is put into service, but why is flow meter calibration so important?
The flow meter calibration process involves comparing the flow meter to a reference device used as a calibration standard. Calibration of reference equipment should be traceable to national or international standards. The next step involves adjusting the flow meter (if necessary) to counteract any errors.
If, like thousands of other facilities, flow meters are used in your process, it makes good business sense to ensure that the flow meters you use are giving you accurate and consistent information.
No matter what fluid you are metering, the liquid, gas or steam used in the process is most likely a valuable commodity. Accurate flow meter performance is therefore an invaluable part of business planning and costing.
At the same time, Calibration Flow Meters are also very important for the control of material consumption in our industrial production process. Can effectively improve production efficiency. reduce manufacturing cost.
Flow Meter Calibration vs. Recalibration
Flow Meter Verification (Verification): Refers to the process of identifying and confirming whether measuring instruments meet the statutory requirements. It includes inspection, marking and/or issuing a certificate.
Flow Meter Calibration (Calibration): refers to the determination of the value indicated by a measuring instrument or measuring system, or the value represented by a physical measuring tool or reference material, and the corresponding value reproduced by a standard under specified conditions. A set of operations on relationships.
After reading the definition, there must be some confusion, right? We usually summarize the main differences between verification and calibration into nine aspects:
Different purposes;
Objects are different;
According to different;
Different in nature;
The cycle is different;
In different ways;
The content of the certificate is different;
Different conclusions;
The authorities are different.
For quick understanding, we simply organize the following table:
Verification and Calibration
Verification
Calibration
Definition of Terms
Refers to the process of identifying and confirming whether measuring instruments meet the statutory requirements, which includes inspection, marking (or) issuing a verification certificate.
Refers to a set of operations to determine the relationship between the value indicated by a measuring instrument or measuring system, or the value represented by a physical measuring tool or reference material, and the corresponding value reproduced by the standard under specified conditions .
Character
It belongs to mandatory verification and has legality;
Users can voluntarily trace the source, which is not legal;
Certificate form
If the test result is qualified, a “Certificate of Test” shall be issued; If it is unqualified, a “Notification of Verification Result” shall be issued
Usually a “Calibration Certificate” or “Calibration Report” is issued; calibration results can also be expressed in the form of calibration curves or calibration factors
Specific method
According to the verification regulations, each point is verified 3 times at 100%, 50%, 20% and 100% of the full scale. If the original coefficient is qualified, the coefficient is not adjusted in principle.
According to the calibration procedure, at 100%, 50%, 20% and 100% of the full scale each point 3 times, adjust the coefficient to obtain the best performance near the user’s actual flow. The nameplate remains the same, but the certificate reflects the change.
How to Calibrate a Flow Meter？
The volumetric method is the most commonly used. This is a method of measuring the volume of fluid flowing into a constant volume container within the measurement time to obtain the flow rate.
The figure below is a schematic diagram of the typical structure of the static volume method water flow verification device. Verify the flow meter with pulse output, and replace 21 for verification of other output flow meters.
The commutator 13 is used to change the flow direction of the fluid so that water flows into the standard container (the standard container 15 or 16 can be selected according to the flow rate). The pulse counting controller 21 is triggered when the commutator 13 starts. To ensure the simultaneous measurement of water and pulse signal counts.
When calibrating, use the pump to draw the test fluid from the liquid storage container into the high level water tank. Then through the school flow meter. If standard container 15 is selected, then close drain valve 17, open drain valve 18, and commutator 13 is placed in the position that makes water flow to standard container 16.
After the flow is stabilized, the commutator 13 is started. Water flow is changed into standard container 15 by standard container 16. At the same time, the trigger pulse counter accumulates the pulse number of the calibrated flowmeter. When the predetermined water volume or preset pulse number is reached, the commutator will automatically change direction. Water flow is changed into standard container 16 by standard container 15. Read off the volume V of the fluid that enters the standard container during this period of time from the scale on the reading glass tube of the container. Record the number of pulses N displayed by the pulse count control 21 for the flow meter being calibrated.
Compare the pulse number N of the calibrated flowmeter with the obtained standard volume V to determine the instrument constant and accuracy of the calibrated flowmeter. The instantaneous flow rate of the flowmeter is indicated by the frequency indicator 20 .
The system accuracy of this method can reach 0.2%.
When calibrating, use a pump to draw the test fluid from the liquid storage container through the flowmeter to be calibrated and then enter the container containing the liquid. Measure the temperature of the fluid while weighing it out. It is used to determine the density value of the measured fluid at this temperature.
The volume of the fluid can be obtained by dividing the weight of the measured fluid by the density of the fluid at the measured temperature. Compare it with the volume indication (accumulated pulse number) of the meter. The meter constant and accuracy of the flowmeter to be calibrated can be determined.
The accuracy of this method system can reach 0.1%
The working principle of the standard volumetric tube method is based on the volumetric method (standard volumetric method), but it is a dynamic measurement.
The standard flowmeter comparison method is to connect the flowmeter to be calibrated and the standard flowmeter in series on the pipeline flowing through the test fluid. The error is calculated by comparing the two measured values. The accuracy of the standard flowmeter is 2 to 3 times higher than that of the schooled flowmeter.
The sonic nozzle gas flow standard device is a standard instrument based on the sonic nozzle. It is used to verify mass flowmeters, velocity flowmeters, volume flowmeters, rotameters, differential pressure flowmeters or other types of flowmeters. It is a standard device for measurement and testing units and large enterprises to measure and calibrate gas flowmeters.
According to the principle of aerodynamics, when the pressure ratio between the upstream and downstream of the factor nozzle reaches a critical state, the throat airflow reaches the peak velocity, and the mass flow through the nozzle also reaches the peak value. This value is only related to the parameter at the nozzle inlet and is not affected by changes in downstream conditions. Based on the above principles, this system uses the sonic nozzle as a standard meter to calibrate the measured flowmeter.
Many users search How to Calibrate a Flow Meter? In order to understand how to adjust the accuracy of the flowmeter in your own working conditions.
On-site “flow comparison” means that the flowmeter is compared with other “reference flows” on site.
For example, the measured value of the temporarily clamped ultrasonic flowmeter, the volume of the liquid that has been measured over the flow in the piping system, etc. can be used as the “reference flow”.
For the meaning of terms such as on-site calibration, comparison and verification, please refer to the standard definitions in relevant documents, and will not repeat them here.
In practice, many professionals have explored various on-site comparison methods and indirect inspection methods. There are mainly 3 types:
(1) Use the container weighing method comparison of storage containers, working containers, pools or weighing instruments in the process. The pool volume comparison method is often used by water supply companies. Water plants can obtain high comparison accuracy by taking advantage of the favorable conditions of large-volume clear water pools.
(2) Reserve a position in the pipeline of the flowmeter to be tested for the flowmeter comparison method of connecting the reference flowmeter.
(3) Ultrasonic flowmeter comparison method of Clamp-on ultrasonic transducer. Clamp-on ultrasonic flowmeter is one of the three most promising methods of flow measurement. Especially the measurement accuracy error of existing foreign products is < ± 0.5%. This is conducive to the establishment of high-precision comparative detection and on-site online calibration system. It is convenient for the metrology and verification department to go to the site for calibration and testing.
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The above is “How to Calibrate a Flow Meter?” I hope it will be helpful to everyone.
Flowmeter calibration method is the trend of measurement technology development. In particular, the use of portable ultrasonic flowmeters to carry out online flowmeter calibration is a feasible method. It can greatly facilitate the on-site measurement and calibration work. It can effectively reduce the capital consumption in metering and is easy to popularize and apply.
The data shows that through the research and application of on-site calibration technology for flow metering instruments. Can improve the measurement detection level. , to achieve the purpose of periodic measurement verification. To make the online flowmeter measurement data accurate and reliable, as long as it is operated accurately. Minimize random and additive errors. It can meet the requirements of the relevant state departments for the accuracy of industrial and civil water measurement.
Sino-Inst is a manufacturer of Calibration Flow Meters. We offer more than 50 Calibration Flow Meters.
Sino-Inst provides customers with professional and targeted system solutions to help customers solve various problems encountered in production, optimize control and improve product quality.
If you need to purchase flowmeters, or consult technical questions about flowmeters, please feel free to contact us.
Request a Quote
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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.
A flush diaphragm pressure transducer is a type of pressure sensor that measures the pressure of a fluid or gas by using a diaphragm. The diaphragm is flush with the surface of the vessel or pipe in which the pressure is being measured. These types of pressure transducers are commonly used in a variety of applications. Including process control, hydraulic and pneumatic systems, and fluid level measurement.
A flush diaphragm pressure transducer is a type of pressure sensor that measures the pressure of a fluid or gas by using a diaphragm that is flush with the surface of the sensor. This type of transducer is commonly used in applications where the pressure being measured is in contact with the transducer. Such as in hydraulic systems or in process control applications.
There are several types of flush diaphragm pressure transducers, including:
Capacitive flush diaphragm pressure transducers: These transducers use a capacitive sensing element to measure pressure. The diaphragm is typically made of a dielectric material. Such as ceramic or polycarbonate, which allows the transducer to measure the change in capacitance as the diaphragm moves in response to pressure.
Piezoresistive flush diaphragm pressure transducers: These transducers use a piezoresistive sensing element to measure pressure. The diaphragm is typically made of a piezoresistive material, such as silicon. Which allows the transducer to measure the change in resistance as the diaphragm moves in response to pressure.
Strain gauge flush diaphragm pressure transducers: These transducers use a strain gauge sensing element to measure pressure. The diaphragm is typically made of a material that deforms under pressure, such as metal or plastic. And the strain gauge measures the change in resistance as the diaphragm deforms.
Flush diaphragm pressure transducers are known for their high accuracy, fast response time, and low hysteresis. They are also typically easy to install, as they do not require any additional mounting hardware or seals. However, they are not as durable as other types of pressure transducers and may be susceptible to damage if they are subjected to high pressure or impact.
Flush diaphragm pressure transducers have a number of advantages that make them well-suited for use in a wide range of applications. Some of the key benefits of flush diaphragm pressure transducers are outlined below.
Sanitary design:
Widely used in food, sanitation and brewing industries. Feel the pressure directly with the hygienic flat membrane. The hygienic flat diaphragm prevents fouling, unhygienic and clogging by viscous liquids.
Accurate measurement:
Flush diaphragm pressure transducers are accuracy and reliability when it comes to pressure measurement. The flush diaphragm design allows the transducer to make a direct contact with the fluid or gas being measured. Which helps to eliminate the potential for to temperature or viscosity changes. This makes flush diaphragm transducers an ideal choice for applications where accurate measurement is critical.
Versatility:
Flush diaphragm pressure transducers can be used to measure a wide range of pressures, from low to high. Making them suitable for use in a variety of applications. They can be used to measure gauge, absolute, or differential pressure, and are available in a range of materials to suit different media. More about: Absolute Pressure Vs Gauge Pressure.
Easy installation:
Flush diaphragm pressure transducers are relatively easy to install and require minimal maintenance. They can be mounted in any orientation and do not require any additional components or sensors to function.
Robust design:
Flush diaphragm pressure transducers are designed to be rugged and durable. Making them suitable for use in harsh or demanding environments. They can withstand high temperatures, pressure spikes, and other extreme conditions without breaking or failing.
Long-lasting:
With proper care and maintenance, flush diaphragm pressure transducers can have a long service life. Making them a cost-effective choice for applications where they will be in use for an extended period of time.
In summary, flush diaphragm pressure transducers are an accurate, versatile, and reliable choice for pressure measurement in a variety of applications. They are easy to install, robust, and long-lasting, making them a popular choice among engineers and technicians.
A flush diaphragm pressure transducer is a type of pressure sensor that is used to measure the pressure of a fluid or gas. It is called a “flush” diaphragm pressure transducer because it has a diaphragm that is flush with the surface of the sensor. This type of transducer is preferred in certain situations because it has several unique features and benefits.
A flush diaphragm pressure sensor is a pressure sensor designed with a smooth, flat surface that is flush with the process being measured. This makes them ideal for use in hygiene-sensitive industries. Such as food and beverage processing, pharmaceuticals and medical device manufacturing. Where it is important to minimize the risk of contaminants becoming trapped in crevices or protruding parts.
Flush diaphragm pressure sensors are used to measure the pressure of liquids, gases, and vapors in a variety of applications. Including process control, safety systems, and quality control. They are especially suitable for monitoring pressure changes in critical process streams. Such as fermentation in beer production or sterilization in medical device production.
One reason to choose a flush diaphragm pressure transducer is when the media being measured is highly viscous or contains particles that could damage the diaphragm of a traditional pressure transducer. The flush diaphragm design protects the diaphragm from being damaged by these mak contaminated it durable and reliable choice.
Another reason to choose a flush diaphragm pressure transducer is when the media being measured is at high temperatures. Traditional pressure transducers can be sensitive to temperature and may not provide accurate readings at high temperatures. The flush diaphragm design, on the others for hand, a more stable and accurate measurement at high temperatures.
In addition to these specific circumstances, flush diaphragm pressure transducers are often preferred in situations where a high level of accuracy and reliability is required. They are typically more expensive than traditional pressure transducers, but their durability and accuracy make them less susceptible to injury .
Overall, flush diaphragm pressure transducers are a useful tool for measuring the pressure of fluids and gases in a variety of applications. They are particularly well-suited for use in high temperature, high pressure, or high viscosity environments. And are preferred in situations where accuracy and reliability are of the utmost importance.
A flush diaphragm is a type of mechanical device that is used to seal off or control the flow of a fluid through a pipe or passageway. It consists of a flexible membrane or diaphragm that is attached to a rigid frame and is positioned within a pipe or valve body.
The diaphragm is designed to move in response to changes in the pressure or flow of the fluid, allowing the device to open or close in order to regulate the flow of the fluid.
Flush diaphragms are commonly used in a variety of applications, including in process control systems, fluid handling equipment, and industrial piping systems. They are known for their durability, reliability, and ability to maintain a tight seal over a wide range of operating conditions.
This type of pressure sensor is also commonly known as: Flat film pressure sensor. Diaphragm pressure transmitter. Paint pressure sensor. Food pressure sensor. Diaphragm pressure sensor. Diaphragm pressure transmitter. Or sanitary pressure transmitter.
Flush diaphragm pressure sensor, including strain type and diffused silicon front type.
The strain-type flush-membrane measuring end adopts a special, sturdy flush diaphragm. Hard particles in the measured medium will not damage the isolating diaphragm. Compact structure, corrosion resistance, anti-vibration, anti-particle impact, wide temperature compensation.
Diffusion silicon front type is made of imported diffusion silicon core. Use calibration and digital compensation technology. The product has reliable performance and stable output.
A diaphragm pressure transducer works by converting pressure into an electrical signal.
It consists of a diaphragm that is exposed to the pressure being measured, a strain gauge that is attached to the diaphragm. And an electrical circuit that is connected to the strain gauge.
When the diaphragm is subjected to pressure, it flexes and causes the strain gauge to also deform. This deformation causes a change in the electrical resistance of the strain gauge. Which the electrical circuit detects and converts into an electrical signal.
The magnitude of the electrical signal is directly proportional to the pressure being applied to the diaphragm. The electrical signal can then be read by a meter or other device to measure the pressure.
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Sino-Inst is a well-respected manufacturer of Flush Diaphragm Pressure Transducers with a wealth of experience in the industry. Sino-Inst supplies more than 10 types of Flush Diaphragm Pressure Transducers.
A flush diaphragm pressure transducer is a type of pressure sensor that is designed for use in applications where it is necessary to measure pressure in a system that contains media that is highly viscous, particulate-laden, or otherwise abrasive.
The flush diaphragm design allows the transducer to be installed directly in the flow path of the process media, without the need for any additional mounting hardware or process fittings. This makes the flush diaphragm transducer well-suited for use in harsh industrial environments. Such as Those found in the oil and gas, chemical, and food and beverage processing industries.
The transducer utilizes a highly sensitive and accurate pressure sensing element. Which is protected by a robust and durable diaphragm that is resistant to wear and corrosion. The output of the transducer is typically an electrical signal that can be easily transmitted and processed by a control monitoring system.
We have a reputation for producing high-quality, reliable products that consistently meet the needs of their customers. Sino-Inst has a dedicated team of professionals who are highly skilled in the design and manufacture of Flush Diaphragm Pressure Transducers, and they take great pride in their work.
If you are in need of a Flush Diaphragm Pressure Transducer, Sino-Inst is an excellent choice.
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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.
