| Measuring method |
Light transmission method |
| Measurable range |
Activated sludge (MLSS): 0-20000 mg/L Resolution: 1 mg/L (0-10000mg/L)
Kaolin: 0-10000 mg/L Resolution: 10 mg/L (10000-22000mg/L)
Clay(inorganic mud): 0-20000 mg/L |
| Repeatability |
Within a reading value ±3% or ±10 mg/L, whichever is larger. (sensor connecting sludge measured value) |
| Transmission output |
One points 4 to 20 mA DC Input/output insulation type Maximum load resistance 900 Ω |
| Contact output |
Three points Output type: No-voltage contact output Relay contact, SPDT
Contact capability R1, R2: Selectable from upper limit alarm, lower limit alarm, transmission output Hold, and cleaning output. (opened at alarm operation, closed usually, closed at power-off)
FAIL: Error warning (normally closed; open when an error occurs; open when the power is turned OFF) |
| Cleaning output |
One points Active voltage contact output (connected supply voltage output)
Contact capability: Solenoid valve drive for cleaning |
| Contact input |
One points Contact type: No-voltage a contact for open collector
Contact capability: Can be selected from cleaning directives and transmission hold. |
| Communication capability |
RS-485 Two-wire input/output insulation type (not insulated from transmission output) |
| Ambient temperature |
-20˚C to 55˚C (without freezing) |