What is the difference between a thermal gas mass flow meter and a mass flow meter?

Time: 2024-07-25
Equipment Configuration:thermal gas mass flow meter

Thermal gas mass flow meters utilize the heat transfer effect to measure gas mass flow and are suitable for large diameter, low flow rate or micro flow scenarios. Mass flow meters cover a wide range of technologies and are suitable for a wider range of fluid measurement scenarios. Thermal gas mass flow controllers provide precise control.

Project Overview

Thermal gas mass flow meters are specifically designed to measure the mass flow of gases. The term mass flow meter is a broader concept that includes all instruments that directly measure the mass flow of a fluid (liquid or gas) flowing through a pipe or channel, not just gases. The following is a detailed explanation of the differences between thermal gas mass flow meters and mass flow meters:

  1. Measurement principle:

  • Thermal gas Mass flow meter: Its working principle is based on the thermal conduction or thermal convection effect. It usually contains one or more heating elements and a temperature sensor. The gas flowing through it takes away heat, causing the temperature of the heating element to change, and the change is related to the mass flow of the gas. Proportional, thereby indirectly measuring mass flow

  • Mass flowmeters: This category includes a variety of technologies such as Coriolis force mass flow.meter, thermal type, differential pressure type combined with density measurement, etc. Coriolis force mass flow meters are another common type that use the Coriolis force generated by the fluid in a vibrating tube to directly measure mass flow.

  • Application scope:

  • Thermal gas mass flow meter is particularly suitable for measuring gas flow, especially for large-diameter pipelines, low flow rates or micro flow rates Measurement without temperature and pressure compensation

  • As a whole concept, mass flow meter covers a wider range of application scenarios, including situations where it is suitable for liquid measurement, and where it is required. Applications for higher precision or specific fluid properties

  • Control functions:

  • Thermal gas mass flow meters may only serve as measuring devices (MFM), while thermal gas mass flow controllers (MFC), in addition to measurement, also have the function of automatically controlling gas flow through built-in control valves and PID adjustment program to achieve precise control of flow

  • Pressure loss and structural features:

  • Hot Type gas mass flow meters usually have low pressure losses, no moving parts, simple maintenance, are suitable for continuous or intermittent operation, and are less sensitive to changes in fluid properties.

  • Other types. Mass flow meters such as Coriolis force meters may have higher pressure losses and may have moving parts in their structure.

In summary, thermal gas meters Mass flow meter is a member of the mass flow meter family, specializing in the measurement of gas flow, while mass flow meter is a broader classification that includes a variety of instruments that work according to different measurement principles, not only limited to gases, but also Measurement of liquids.

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