PH meter HP-200

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

  • 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 method

Glass electrode method

Measuring range

pH: 0 to 14 pH   Resolution: 0.01 pH

Temperature: 0 to 100˚C   Resolution: 0.1˚C


pH: ±0.03 or less   Temperature: ±0.3˚C (for equivalent input)


pH: ±0.03 or less   Temperature: ±0.3˚C (for equivalent input)

Transmission output

Two point 4 to 20 mA DC   Input/output insulated type   Maximum load resistance 900 Ω

Contact output

Five 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 input

One point   Contact format: Open collector non-voltage a contact

 Contact function: Cleaning operation external input

Communication function

RS-485   Two wire system, Input/output insulated type (not insulated for transmission output)

Temperature compensation range

0 to 100˚C

Ambient temperature

-20 to 55˚C

Temperature compensation element

Pt 1000 (0˚C)

Positive temperature sensitive resistor element: 500 Ω (25˚C), 6.8 kΩ (25˚C), 10 kΩ (25˚C)

Calibration method

Automatic or manual calibration

Self-diagnosis function

Calibration error, Electrode diagnosis error, Analyzer malfunction

Power supply

90 to 264 V AC   50/60 Hz

Power consumption 15 W or less


Outdoor installation type: IP65 protection level

Mounting method: 50A pole or wall mounted

Case: Aluminum alloy

Mount fitting/hood: SUS304


Approx. 4.5 kg

Equipment protected

CE marking, FCC rules