MF5700 series portable gas mass flowmeter is an application of MEMES flow sensor chip development, wide application range, low power consumption, portable, with the display, can realize the network of measuring instruments.This instrument is suitable for monitoring and measuring of clinical RAMS in hospital.And the air measurement of the electromechanical industry, food industry, tobacco industry, chemical industry, beverage industry, scientific research institutions, pharmaceutical industry, agriculture, forestry, fishery and other industries.