When fluids are exposed to extreme temperatures (extremely high and extremely low), meticulous measurement of fluid flow is critical. This is where extreme temperature flow meters come into play.
Extreme temperature applications require proper protection of the sensitive electronic components inside the flow meter. In addition, since the viscosity of the heat transfer fluid changes with its temperature, it will affect the response of the flow meter.
Sino-Inst’s extreme temperature flow meters can support customization to meet various special measurement conditions.
How does temperature affect flow measurement?
The performance and accuracy of flowmeters are often affected by many factors, among which temperature is an important factor that cannot be ignored.
- Temperature affects the internal structure of the flowmeter.
Flowmeters are usually composed of sensors, converters, and display instruments. The material properties of these parts will change with temperature changes.
For example, in a high-temperature environment, some materials may expand, causing the internal structure of the flowmeter to deform, thereby affecting its measurement accuracy.
In addition, temperature changes may also cause stress changes in the material, causing the internal parts of the flowmeter to loosen or be damaged, thereby affecting its normal operation.
- Temperature affects the properties of the fluid.
The properties of the fluid, such as density, viscosity, and thermal conductivity, will change with temperature changes. Changes in these properties will directly affect the measurement results of the flowmeter.
For example, when the temperature rises, the viscosity of the fluid may decrease, causing the flow velocity of the fluid in the flowmeter to change, thereby affecting the measurement accuracy.
In addition, temperature changes may also cause the volume of the fluid to expand or contract, further affecting the measurement results of the flowmeter.
- Temperature also affects the electronic components of the flowmeter.
Flow meters usually contain some electronic components, such as sensors, amplifiers, etc., the performance and stability of these components are greatly affected by temperature.
In high-temperature environments, electronic components may experience thermal drift, resulting in distortion or instability of the measurement signal. In addition, temperature fluctuations may also cause fatigue and aging of electronic components, shortening their service life.
Extreme Temperature Flow Meters have taken the influence of temperature into consideration during design, and use special materials or structures to improve temperature resistance. However, for most flow meters, it is still necessary to pay attention to the influence of temperature during use and take corresponding measures to reduce temperature errors.
Fundamental Properties of Extreme Temperature Flow Meters
- Material Characteristics: Common materials used materials in extreme temperature flow meters include stainless steel, 17-4PH, Nickel 200, and Duplex Stainless steel. The materials used in the construction of extreme temperature flow meters must be resistant to the corrosive effects of high temperatures and any potentially aggressive fluids being measured.
- Accuracy and Reliability;
- Wide Temperature Range;
- Response Time: Flow meters with fast response times are essential in such environments.
- Enduringness and Long Life;
Kinds of Extreme Temperature Flow Meters
For high temperature-low temperature gas
- Thermal mass flowmeter can measure high temperature gas up to 220℃.
- Vortex flowmeter can measure high temperature gas up to 350℃.
- V cone flowmeter can measure high temperature gas up to 550℃.
- Differential pressure flowmeters such as Annubar can measure high temperature gas up to 800℃.
- Metal rotor flowmeter can measure high temperature gas up to 300℃.
- Target flowmeter can measure high temperature gas of -200~+500℃.
- V cone flowmeter can be selected for low temperature gas.
For high temperature-low temperature liquids
- Coriolis mass flowmeter can measure liquids at -50℃～300℃.
- Positive displacement (gear) flowmeter can measure fluids at -20~200℃.
- Turbine flowmeter can measure liquids at -200~200℃.
- V-cone flowmeter can measure high temperature liquids up to 550℃.
- Orifice plate and other differential pressure flowmeters can measure high temperature fluids up to 500℃.
- Target flowmeter can measure high temperature fluids at -200~+500℃.
- Ultrasonic flowmeter can measure liquids at -30~160℃.
Fundamental Properties of Extreme Temperature Flow Meters
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Selecting the right extreme temperature flow meter involves consideration of several factors, including the type of media, flow rate range, temperature and pressure conditions, and the required accuracy. Sino-Inst provides a wide range of solutions for extreme temperature flow measurements.
Additionally, our company’s flow meter experts assess the compatibility of the meter materials with the media being measured to prevent corrosion or degradation. It’s also essential to review the installation requirements and any regulatory standards that apply to your industry. That’s why consulting with a flow measurement expert can help ensure you choose the most suitable meter for your specific needs.