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〈Catalog〉Industrial Water Quality Measuring Instruments
| Measuring method | Polarography |
|---|---|
| Measuring range | Residual Chlorine: 0 mg/L to 3 mg/L Resolution: 0.01 mg/L Temperature: 0 to 50˚C Resolution: 0.1˚C |
| Repeatability | Residual Chlorine:Within ±0.05 mg/L or less Temperature: Within ±0.5˚C(for equivalent input) |
| Linearity | Residual Chlorine:Within ±0.05 mg/L or less Temperature: Within ±0.5˚C(for equivalent input) |
| Transmission output | Two points 4 to 20 mA DC Input/output insulation type Maximum load resistance 900 Ω |
| Contact output | Three points No-voltage contact output Relay contact, SPDT Contact capability R1, R2: Selectable from upper limit alarm, lower limit alarm, ON/OFF control, currently holding transmission output, 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) |
| Contact input | Two points Contact type: No-voltage a contact for open collector Contact capability: Input 1: External input for transmission holding Input 2: Flow switch input for interlock(Open due to decreased flow) |
| Communication capability | RS-485 Two-wire input/output insulation type (not insulated from transmission output) |
| Temperature compensation range | 0 to 50°C |
| Ambient temperature | 0 to 55°C |
| Cleaning capability | Electrochemical Cleaning between Cathode and Electrochemical cleaning electrode |
| Calibration method | Zero calibration (Zero liquid calibration) SPAN calibration(Compare to measurement value of DPD method, Including zero electric calibration) |
| Self-diagnosis function | Calibration error, Temperature sensor diagnostic error, Meter error |
| Power source | 90 V to 264 V AC, 50/60 Hz 35 VA (max.) when an automatic cleaner is connected. |
| Construction | Outdoor installation type: IP65 Protection class Installation method: 50 A pole-mounted or wall-mounted Material of case: Aluminum alloy (coated with epoxy modified melamine resin) Material of mounting brackets: SUS304 |
| Weight | Approx. 4.5 kg |
| Equipment protected | CE marking, FCC rules |