| 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) |