1, the flow meter is the use of heat-sensitive measurement, through the split molecules to take away the molecular mass of how much so as to measure the flow rate, because it is a heat-sensitive measurement, so it will not be because of changes in gas temperature, pressure and thus affect the results of the measurement .

At the same time, it is also a more accurate, fast, reliable, efficient, stable, flexible flow measurement instrument, in the petroleum processing, chemical industry and other fields will be more widely used, I believe that will promote the flow measurement shows great potential.

2, mass flow meter can also measure the density of the medium and indirectly measure the temperature of the medium, because the transmitter is a microcontroller as the core of the intelligent instrumentation, so according to the above three basic quantities and the export of more than a dozen kinds of parameters for the user to use. Because of this kind of flowmeter configuration flexibility, powerful, high performance-price ratio, is a new generation of flow meter.

3, with the level of automation, many production processes have put forward new requirements for flow measurement. Chemical reaction process is controlled by the quality of raw materials. The heating and cooling effects of steam and air flow are also proportional to the mass flow rate.

Strict control of product quality, accurate costing, and control of fuel quantity for airplanes and missiles also require precision. Therefore mass flow meter is an important flow measurement instrument.

Expanded Information

The mass flow meter can be divided into two categories: one is direct, that is, the direct output of the mass flow; the other is indirect or derivative, such as the application of ultrasonic flowmeter and densitometer combination of their output and then multiply the operation in order to derive the mass flow.

1, Coriolis mass flowmeter

The structure of the main body of the two side-by-side U-shaped tube, so that the two tubes back to the curved part of the phase of the slight vibration up, then the two sides of the straight tube will follow the vibration, that is, they will be close together at the same time or at the same time open, that is, the vibration of the two tubes is synchronized, symmetrical. If the fluid is introduced into the tube while the tube is vibrating synchronously, so that it flows forward along the tube, the tube will force the fluid to vibrate up and down with it.

2, thermal mass flowmeter

Thermal mass flowmeter (hereinafter referred to as TME) is the use of the principle of heat transfer, that is, the fluid in the flow of heat and heat source (fluid heated objects or measuring tube outside the heater) between the exchange of heat to measure the flow rate of the instrumentation, in the past our country used to be called thermal flowmeter. Currently, it is mainly used for measuring gas

Baidu Encyclopedia - Mass Flow Meter