Analyze thermal gas mass flow meters with those advantages and disadvantages

What are the advantages of a hot gas mass flow meter? What are the shortcomings and shortcomings of thermal gas mass flow meters?

The true mass flow meter does not require temperature and pressure compensation for gas flow measurement, and the measurement is convenient and accurate. A mass flow rate of the gas or a standard volume flow can be obtained.
Wide range ratio, which can measure gas flow rate up to 100Nm/s bottom to 0.5Nm/s, and can be used for gas leak detection. The seismic performance is good and the service life is long. The sensor has no moving parts and pressure sensing parts and is immune to the influence of vibration on the measurement accuracy.
Easy to install and maintain. Non-stop production installation and maintenance can be achieved where field conditions permit. (requires special customization)

Digital design. The overall digital circuit measurement, accurate measurement and convenient maintenance. Factory automation and integration can be achieved by using RS-485 communication or HART communication.

What are the disadvantages of thermal gas mass flow meters?

1. The thermal mass flow meter responds slowly.

2. In places where the measured gas composition changes greatly, the measured value will change greatly due to the change of cp value and thermal conductivity.

3. For small flows, the meter will bring considerable heat to the gas being measured.

4. For the heat distributed thermal gas mass flowmeter, if the measured gas affects the measured value in the fouling layer of the pipe wall, it must be cleaned regularly; the thin pipe type instrument is more likely to be blocked, and it cannot be used under normal circumstances.

5. The use of pulsating flow will be limited.

6. The thermal mass flow meter for liquids is also limited in the use of viscous liquids.