Silver Automation Instruments has been introduced to produce this thermal mass flow meter measuring gas mass flow. Traditional flow meters need to adapt temperature and pressure compensation for measurement of fluid mass flow, whereas this China Thermal Mass Flow meter can directly measure fluid mass flow without requiring temperature and pressure compensation. Its conspicuous features are as follows: direct trade settlement, no movable components, small pressure loss, wide range ratio, high accuracy, high reliability, simple installation and convenient operation. It is extensively used in the industries such as petroleum, chemical industry, medical industry, heat power plant and environmental protection etc.