... features to the total mass flow5.All parameters programmable input from the keyboard6.Off point protection, safety lock7.Not ... ~20mA,standing for media densityVoltage output: ±0.5VDC,standing for media density.Frequency output: 1 ~10000Hz,standing for flow,Electrical level,0~ ... its inception in 1997, Its stable performance, cost performance for the domestic mass flowmeter has won the reputation of, ...