HP-200-K (Four-Wire Analyzer)

HP-200-K (Four-Wire Analyzer)

Industrial pH meter

One-touch calibration function Realizes gentle measurement by combination with lead-free ORP electrode

Division: Process Water
Manufacturing Company: HORIBA Advanced Techno Co., Ltd.


  • Improved single-touch calibration for greater ease of use
  • Calibration history display
  • Extensive interfaces (2-channel transmission output, RS-485 compatible, 6-relay output)
  • Control output (upper and lower limits ON/OFF and duty control in a shared time and a zone)
  • New pH electrode lineup



Measuring methodGlass electrode method
Measuring rangepH: 0 to 14 pH   Resolution: 0.01 pH
Temperature: 0 to 100˚C   Resolution: 0.1˚C
RepeatabilitypH: ±0.03 or less   Temperature: ±0.3˚C (for equivalent input)
LinearitypH: ±0.03 or less   Temperature: ±0.3˚C (for equivalent input)
Transmission outputTwo point 4 to 20 mA DC   Input/output insulated type   Maximum load resistance 900 Ω
Contact outputFive 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 inputOne point   Contact format: Open collector non-voltage a contact
 Contact function: Cleaning operation external input
Communication functionRS-485   Two wire system, Input/output insulated type (not insulated for transmission output)
Temperature compensation range0 to 100˚C
Ambient temperature-20 to 55˚C
Temperature compensation elementPt 1000 (0˚C)
Positive temperature sensitive resistor element: 500 Ω (25˚C), 6.8 kΩ (25˚C), 10 kΩ (25˚C)
Calibration methodAutomatic or manual calibration
Self-diagnosis functionCalibration error, Electrode diagnosis error, Analyzer malfunction
Power supply90 to 264 V AC   50/60 Hz
Power consumption 15 W or less
ConstructionOutdoor installation type: IP65 protection level
Mounting method: 50A pole or wall mounted
Case: Aluminum alloy
Mount fitting/hood: SUS304
WeightApprox. 4.5 kg
Equipment protectedCE marking, FCC rules

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