Measuring method	Glass electrode method
Measuring range	pH: 0 to 14 pH Resolution: 0.01 pH Temperature: 0 to 100˚C Resolution: 0.1˚C
Repeatability	pH: ±0.03 or less Temperature: ±0.3˚C (for equivalent input)
Linearity	pH: ±0.03 or less Temperature: ±0.3˚C (for equivalent input)
Transmission output	Two point 4 to 20 mA DC Input/output insulated type Maximum load resistance 900 Ω
Contact output	Five points Non-voltage contact output Relay contact, SPDT (1c) Contact function: R1, R2: Selectable from upper limit alarm, lower limit alarm, ON/OFF control, time-shared proportional control R3, R4: Selectable from upper limit alarm, lower limit alarm, transmission output hold operation, cleaning output FAIL: Malfunction alarm
Contact input	One point Contact format: Open collector non-voltage a contact Contact function: Cleaning operation external input
Communication function	RS-485 Two wire system, Input/output insulated type (not insulated for transmission output)
Temperature compensation range	0 to 100˚C
Ambient temperature	-20 to 55˚C
Temperature compensation element	Pt 1000 (0˚C) Positive temperature sensitive resistor element: 500 Ω (25˚C), 6.8 kΩ (25˚C), 10 kΩ (25˚C)
Calibration method	Automatic or manual calibration
Self-diagnosis function	Calibration error, Electrode diagnosis error, Analyzer malfunction
Power supply	90 to 264 V AC 50/60 Hz Power consumption 15 W or less
Construction	Outdoor installation type: IP65 protection level Mounting method: 50A pole or wall mounted Case: Aluminum alloy Mount fitting/hood: SUS304
Weight	Approx. 4.5 kg
Equipment protected	CE marking, FCC rules