MF-GD series low pressure mass flow meters is specially designed for the measurement of all kinds of medium and low pressure gases. This series of flowmeter adopts battery power supply, which reduces the engineering cost. It can be applied to pipes with diameter of 32~80mm,compressed air, nitrogen, oxygen, carbon dioxide, etc. can be measured, and the accuracy is as high as ± (1.5 + 1.5FS) %, and the maximum working pressure is 0.2MPa.