4-20mA output controll dosing pump low price ATC digital PH meter
Measure range
PH(0-14PH); ORP(-1900~+1900Mv)
Accuracy
PH: ±0.02PH; OPR: ±1mv
Resolution
PH: 0.01PH; ORP: 1mv
Stability
PH: ≤0.02PH/24h; ORP: ≤3mv/24h
Input impedance
≥1012Ω
Temperature range
0-100C; accuracy: ±0.5C
Temperature compensation
0-100C (NTC 10K)
Power supply
AC220V±10%, 50Hz, and 24V
Relay output
One high alarm, one low alarm(3A/250V/AC)
Regular on
Communication function
RS485, with Modbus RTU
Transmission function
4-20ma output; maximum loop750Ω;0.1%FS