The product consists of valve base meter and small movement combination, adding actuator, water consumption information by the sensor output pulse signal, intelligent operation module to meet the standard requirements and user requirements, built-in file battery to meet the requirements of 7 years of electricity energy, IC card water meter and computer water sales system using radio frequency card as a communication medium. Realize prepayment and information feedback management

Calculation of parameters and limits of error of indication (range ratio Q3/Q1 = 100)