Industrial electric resistivity meter HE-300R (Two-Wire Transmitter)

HE-300R (Two-Wire Transmitter)



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


  • Accurate measurement of UPW resistivity
  • Well-examined temperature compensation function for UPW
  • Arbitrary setting of the compensation target temperature



Measuring methodTwo electrode method
Measuring rangeCell constant/cm0.01
MΩ·cm0.000 to 2.0000.00 to 20.00*
kΩ·m0.00 to 20.000.0 to 200.0*
 * With conditions under which temperature compensation is not performed, it is possible to display 0.0 to 100.0 MΩ·cm (0 to 1,000 kΩ·m).
Temperature˚C0 to 100   Resolution: 0.01˚C
RepeatabilityElectrical resistivity: ±0.1% full-scale or less, Temperature: ±0.1˚C (for equivalent input)
LinearityElectrical resistivity: ±0.5% full-scale or less, Temperature: ±0.5˚C (for equivalent input)
Transmission output4 to 20 mA DC   Input/output insulated type
Maximum load resistance 600 Ω
Contact inputOne point   Contact format: Non-voltage a contact
 Contact function: Transmission output is held for closed contact input.
Temperature compensation range0 to 100˚C
Ambient temperature-20 to 60˚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 temperature gauge
Additional functionUltra-pure water resistivity selection function, clip function
Self-diagnosis functionSensor diagnosis error, Transmitter malfunction
Power supply24 V DC (operational voltage range: 21 V to 32 V DC)
Power consumption 0.6 W or less
ConstructionOutdoor installation type: IP65 protection level (rain-proof type)
Mounting method: 50A pole or wall mounted
Case: Aluminum alloy
Mount fitting/hood: SUS304
Compatible sensorERF series electrical resistivity sensor (cell constant 0.01/cm)
Pair calibration accuracy*Electrical resistivity: ±0.01 MΩ·cm or less
Temperature: ±0.02˚C or less (for standard unit / same temperature)
WeightApprox. 4 kg
Equipment protectedCE marking, FCC rules

* The sensor and transmitter are assembled in advance and pair calibration is performed before shipping.


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