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The applications of thermal gas mass flow meters in chemical industry

2020-09-23
Thermal gas mass flow meters are specially designed for single-component gas or fixed-proportion mixed gas measurement. At this stage, they have been widely used in crude oil, chemical plants, semiconductor materials, medical equipment, biotechnology, ignition control, gas distribution, Environmental monitoring, instrumentation, scientific research, metrological verification, food, metallurgical industry, aerospace and other industries.



Thermal gas mass flow meters are used for fine measurement and automatic control of gas mass flow. Select standard input and output signals to complete centralized computer control. There are many forms of application in Petrochemical Company. For example, the polypropylene device hydrogen flow meter FT-121A/B uses the BROOKS thermal measuring flow meter, with ranges of 1.45Kg/H and 9.5Kg/H. Compared with the traditional flow meter, it does not need to be equipped with temperature and pressure transmitters, and can directly measure the mass flow (in the standard state, 0℃, 101.325KPa) without temperature and pressure compensation. When gas is used as a manipulated variable in the production process (such as incineration, chemical reaction, ventilation and exhaust, product drying, etc.), the mass flow controller is used to directly measure the number of moles of the gas.

If you want to maintain a quantitative gas mixture as a mixture or ingredient, perhaps to optimize the chemical reaction process, so far there is no better skill than using a mass flow controller. The mass flow controller is continuously adjustable to control the flow, and the cumulative flow can be obtained through the display instrument.

Thermal mass flow meter is also a better instrument for testing the tightness of pipeline systems and valves, and it directly shows the amount of air leakage. Mass flow meters are cost-effective, easy to install, and simple to operate. The use of mass flow meters and mass flow controllers is one of the most reasonable choices.

Because the sensor of this type of mass flow meter is based on the thermal principle, if the gas is not a dry gas, it will affect the heat transfer efficiency, thereby affecting the output signal and measurement accuracy of the sensor.
 
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