Field-installation type polarographic residual chlorine meter

HORIBA's long-selling water quality meter that excels in indoor applications.

Ideal for measuring the concentration of free residual chlorine in tap water, swimming pools, spas and similar environments.  By combining two methods, namely physical polishing cleaning using cleaning beads and electrochemical cleaning utilizing electrochemical reactions, long-term stable measurements can be achieved.

Divisão: Process Water
Fabricante: HORIBA Advanced Techno Co., Ltd.

Achieving stable measurements through two types of cleaning

In addition to continuous cleaning using normal abrasives (cleaning beads), electrochemical cleaning can be performed.

Measuring methodPolarography
Measuring rangeResidual Chlorine: 0 mg/L to 3 mg/L   Resolution: 0.01 mg/L
Temperature: 0 to 50˚C   Resolution: 0.1˚C
RepeatabilityResidual Chlorine:Within ±0.05 mg/L or less   Temperature: Within ±0.5˚C(for equivalent input)
LinearityResidual Chlorine:Within ±0.05 mg/L or less   Temperature: Within ±0.5˚C(for equivalent input)
Transmission outputTwo points 4 to 20 mA DC   Input/output insulation type   Maximum load resistance 900 Ω
Contact outputThree 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 inputTwo 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 capabilityRS-485   Two-wire input/output insulation type (not insulated from transmission output)
Temperature compensation range0 to 50°C
Ambient temperature0 to 55°C
Cleaning capabilityElectrochemical Cleaning between Cathode and Electrochemical cleaning electrode
Calibration methodZero calibration (Zero liquid calibration)
SPAN calibration(Compare to measurement value of DPD method, Including zero electric calibration)
Self-diagnosis functionCalibration error, Temperature sensor diagnostic error, Meter error
Power source90 V to 264 V AC, 50/60 Hz 35 VA (max.) when an automatic cleaner is connected.
ConstructionOutdoor 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
WeightApprox. 4.5 kg
Equipment protectedCE marking, FCC rules

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