主要用于检测0-250mm水柱微压的变化，输出信号为标准电流信号，信号电流范围4-20mA， 该产品主要用于医疗器械，石油化工、工业锅炉、电厂及工程机械。 It is mainly used to detect the change of micro pressure of 0-250mm water column. The output signal is a standard current signal with a signal current range of 4-20mA, This product is mainly used in medical equipment, petrochemical industry, industrial boilers, power plants and engineering machinery.