Mass Flow Meters

Basic Information

Size: DN15 ~ DN500

Installation Medium: Various gases (Except the acetylene)

Medium Temperature: - 20 to 220oC

Pressure Rating: 1.6 Mpa

Accuracy:  ± 1 % ~ 2.5%

Protection level: IP65

Output type:  4-20mA, RS485 communication, HART protocol

Power supply: 24V DC or 220V AC

The thermal gas mass flow meter operates based on thermal dispersion and uses the constant differential temperature method to measure gas flow. It offers advantages such as small size, easy installation, high reliability, and high accuracy. The meter features two platinum resistance temperature sensors. The principle works by monitoring the cooling effect of a gas stream as it flows over a heated sensor. Gas passing through the sensing section flows over two sensors, one acts as a temperature sensor, while the other functions as a heater. The temperature sensor tracks the actual process values, while the heater maintains a constant differential temperature above the process value by adjusting the power consumed. As the gas velocity increases, so does the cooling effect, requiring more power to maintain the differential temperature. The measured heater power, therefore, corresponds to the gas mass flow rate.

  • Measures mass or volume flow of gas.
  • No need for temperature or pressure compensation, offering accurate measurement and easy operation.
  • Wide range: 0.5 Nm³/s to 100 Nm³/s for gas, also suitable for gas leak detection.
  • Excellent vibration resistance and long service life, with no moving parts or pressure sensors in the transducer.
  • Easy installation and maintenance, with optional hot-tapped installation (custom order).
  • Digital design for high accuracy and stability.
  • Compatible with RS485 or HART interface for factory automation and integration.

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Other Products of Flow Meters

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Vortex Flow Meters
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Open Channel Flow Meters
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Ultrasonic Flow Meters
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