Types of Diaphragm gas meter

There are two Diaphragm gas meter on the market, one is the traditional mechanical membrane gas meter; the other is the prepaid membrane gas meter. The measurement of the mechanical membrane gas meter is realized by the mechanical roller. The mechanical roller is added according to the gas volume used. Every time a unit is used, the count of the roller is increased by one, and finally the gas volume measurement record is realized. The advantages of mechanical gas meters are that they are reliable in measurement and stable in quality. The disadvantages are that it is troublesome to read the meters, and they have to be read manually. The gas company needs to invest a lot of money and manpower.