Industrial resistivity meter HE-480R

Industrial resistivity meter HE-480R

The HE-480R industrial resistivity meter features the high-precision temperature compensation function.
Its high-performance temperature compensation makes it ideal for sequential monitoring of ultra-pure water used in manufacturing processes in the semiconductor field, and many other fields, including the areas of electrical goods, foods and medicines.


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


  • High-precision temperature compensation
    The temperature compensation element used is a platinum resistance thermometer (Pt 1000 Ω).
  • Freely adjustable standard temperature
    You can set the standard temperature for temperature compensation to a value of your choice, allowing it to meet the conditions you require, for processes such as measuring warm deionized water.
  • We make use of a full range of correction equipment
    Sensors are inspected prior to dispatch using correction equipment with ensured traceability. We have also put in place an after-sales support service, including on-site correction, and performing validation, for example by issuing correction certificates.
  • Uses lead-free solder
    To reduce the burden on the environment, lead-free solder has been used to mount the components on the printed circuit board.



Product nameIndustrial resistance meter
Measurement methodElectrode type (2-electrode method)
Cell constant0.01 /cm
Temperature sensor
Platinum resistance 1000 Ω / 0 °C
Measuring rangeMeasurement unitkΩ·m0 to 2.000 to 20.00 to 200.00 to 1000 *
MΩ·cm0 to 0.2000 to 2.000 to 20.000 to 100.0 *
*: Measurable without temperature compensation
Temperature: 0 °C to 100 °C (Select your desired decimal point from 0, 1, and 2 digits.)
Repeatability Within±0.5% of the full scale (in equivalent input)
Linearity Within±0.5% of the full scale (in equivalent input)
4 mA to 20 mA DC: input / output isolated type
Maximum load resistance: 900 Ω
Transmission output range: Freely selectable within the measurement range
Contact outputOutputs: 2 points
Alarm contact output (R1 and R2)
Contact type: relay contact, SPDT (1c)
Contact rating: 240 V AC, 3 A and 30 V DC, 3 A (resistance load)
Contact function: selectable from upper / lower limit operation (ON / OFF control), alarm, and maintenance.
Calibration functionSpecific resistance
output hold feature
  • Previous value hold
  • Optional value hold
  • Continuous
Selectable from the above (However, only the previous value hold is available in the maintenance Mode.)
  • Sensor diagnosis
  • Out of the measurement range
  • A/D converter scale over
  • Converter error
  • Based on the temperature characteristics of extra deionized water (reference temperature: 25 °C)
  • Based on the reference temperature and user-defined temperature coefficient (reference temperature: 5 °C to 95 °C)
  • No temperature compensation
Temperature - compensated range0 °C to 100 °C
Extra deionized water specific resistance selectionMeasurement unitkΩ·m182.3 (standard), 181.8, 182.4Select from options shown on the left.
MΩ·cm18.23 (standard), 18.18, 18.24
Clipping functionWhen the measured value is above the upper limit of the measurement range derived from the specified specific resistance, the specified resistance is used as the measured value.
Power supplyRated voltage 100 V to 240 V AC, 50/60 Hz, 10 VA (max.)
StructureIndoor-use panel installation type
Panel: IP65 dust and water proof structure
Protective structurePanel: IP65 (IEC60529, JIS C0920)
Conforming standardsCE Marking
FCC Rule
48 (W) mm x 96 (H) mm x 115 (D) mm
Case depth: approx. 105 mm (when panel-mounted)
MassApprox. 400 g
ERF-series specific resistance sensor, cell constant 1.0 /m (0.01 /cm)


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