Feild-installation Type Residual Chlorine Meter (Four-Wire Transmission, Water flow beads)
HR-200 is connected to a residual chlorine sensor (RA-20), which allows the free residual chlorine concentration to be measured with high accuracy. It is sutable for waterworks, pool water sterilization, and desalination systems. The measurement method is a three-pole polarographic method, which enables continuous monitoring of residual chlorine concentrations without using reagents. Stable measurement over a long period was realized by physical polishing cleaning using beads.
Free residual chlorine concentration: 0 - 3 mg/L
Temperature: 0 -50 ℃
Measuring method | Polarography |
---|---|
Measuring range | Residual Chlorine: 0 mg/L to 3 mg/L Resolution: 0.01 mg/L Temperature: 0 to 50ËšC Resolution: 0.1ËšC |
Repeatability | Residual Chlorine:Within ±0.05 mg/L or less Temperature: Within ±0.5ËšC(for equivalent input) |
Linearity | Residual Chlorine:Within ±0.05 mg/L or less Temperature: Within ±0.5ËšC(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 |
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