Industrial electric conductivity meter HE-200H (Four-Wire Analyzer)

HE-200H (Four-Wire Analyzer)



Segment: Process And Environment
Division: Process Water
Base product
Manufacturing Company: HORIBA Advanced Techno Co. Ltd.


  • Measures up to 2,000 mS/cm
  • Auto resolution switching
  • Sea water salinity and NaCl concentration conversion function
  • Automatic HNO3/H3PO4/NaOH  concentration conversion function
  • Flexible temperature compensation
  • Extensive interfaces (2-channel transmission output, RS-485 compatible, 3-relay output)



Measuring methodFour electrode method
Measuring rangeElectrical conductivity: 0.0 to 200.0 mS/cm* 0.00 to 20.00 S/m*
(Switchable between fixed range (decimal point) and automatic range)
* With conditions under which temperature compensation is not performed, it is possible to display 0 to 2,000 mS/cm (0 to 200 S/m).
Temperature: 0 to 100˚C   Resolution: 0.01˚C
Salinity conversion functionSea water: 0.00 to 4.00%,   NaCl: 0.0 to 20.0%
Concentration conversion functionNaOH: 0.00 to 5.00%, HNO3: 0.00 to 5.00%, H3PO4: 0.00 to 5.00
Specified 1 to 4: 0.00 to 100.00%


Cell constant0.1/cm1.0/cm
0 to 20.00 mS/cm±0.5% full-scale or less±0.5% full-scale or less
20.0 to 200.0 mS/cm±1.0% full-scale or less±0.5% full-scale or less
ConditionFor equivalent input 
TemperatureRepeatability: ±0.1˚C, Linearity: ±0.5˚C
Transmission outputTwo points 4 to 20 mA DC   Input/output insulated type   Maximum load resistance 900 Ω
Contact outputThree points Non-voltage contact output   Relay contact, SPDT (1c)
 Contact function: R1, R2: Selectable from upper limit alarm, lower limit alarm, transmission output hold operation
 FAIL: Malfunction alarm
 Alarm operation: Output details: Electrical conductivity (or conversion value), temperature
 Note: Range only applies to sanitary sensors.
Contact inputTwo points   Contact format: Open collector non-voltage a contact
 Contact function: Transmission output range switching, transmission output hold external input
 Function selectable from “Transmission 4 range selection” or “Transmission 2 range selection + hold”
 Linking to selected transmission range also allows automatic switching of display
Communication functionRS-485   Two wire system, Input/output insulated type (not insulated for transmission output)
Temperature compensation range0 to 100˚C (but for 0˚C or less, 100˚C or more, extend and perform calculation)
Ambient temperature-20 to 55˚C
Temperature compensation elementPt 1000 (0˚C)
Calibration functionElectrical conductivity: Based on input of cell constant correction coefficient (parameter input)
 Temperature: One point calibration compared with reference thermometer
Self-diagnosis functionSensor 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


Do you have any questions or requests? Use this form to contact our specialists.