Although the thermal gas mass flow meter has many advantages, it also has disadvantages, such as: only measuring the dry gas. If the gas contains a large amount of water vapor, the indication value will be too large. The preliminary criterion is that condensation does not form in the pipeline. Water gas can measure the thermal gas mass flow meter. Although it has many advantages, it also has disadvantages. For example, it can only measure dry gas. If the gas contains large water vapor, the indication value will be too large. The preliminary judgment standard is Gases that do not form condensed water in the pipeline can be measured; gases with frequent changes in gas composition and high measurement accuracy are not suitable for measurement; gases with high dust content and high measurement accuracy are not suitable for measurement.
The thermal gas mass flow meter has the following characteristics:
(1) Direct measurement of gas mass flow with an accuracy of ±1.0% F·S;
(2) Repeatability reaches ±0.2% F·S;
(3) the turndown ratio reaches 100:1;
(4) The thermal gas mass flowmeter has very small pressure loss, and the pressure loss above 150mm inner diameter can be neglected;
(5) A process connection, the temperature and temperature compensation has been done at the calibration, no additional temperature, pressure transmitter and corresponding compensation are required;
(6) Plug-in installation, double ferrule locking connection, no moving parts inside, basically maintenance-free;
(7) Pipeline vibration has very little impact on instrument performance;
(8) It can be installed with a ball valve, eliminating the bypass pipe and the corresponding valve;
(9) The requirements for straight pipe sections before and after are low, and the pipeline type only needs 1D straight pipe section;
(10) Bring your own free meter communication software to facilitate fine-tuning the instrument;
(11) With the calibration software, you can complete the self-test without arranging the meter, and give the verification report whether the flowmeter is qualified.
(12) When the thermal gas mass flowmeter mistakes the pipe diameter during technical confirmation, the thermal gas mass flowmeter can be easily adjusted by its own software to avoid recalculation, re-ordering, and delay production.
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