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.


  • 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.

Hergestellt von HORIBA Advanced Techno


Product name

Industrial resistance meter



Measurement method

Electrode type (2-electrode method)

Cell constant

0.01 /cm

Temperature sensor

Platinum resistance 1000 Ω / 0 °C

Measuring range

Measurement unit


0 to 2.00

0 to 20.0

0 to 200.0

0 to 1000 *


0 to 0.200

0 to 2.00

0 to 20.00

0 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 output

Outputs: 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 function

Specific 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 range

0 °C to 100 °C

Extra deionized water specific resistance selection

Measurement unit


182.3 (standard), 181.8, 182.4

Select from options shown on the left.


18.23 (standard), 18.18, 18.24

Clipping function

When 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 supply

Rated voltage 100 V to 240 V AC, 50/60 Hz, 10 VA (max.)


Indoor-use panel installation type
Panel: IP65 dust and water proof structure

Protective structure

Panel: IP65 (IEC60529, JIS C0920)

Conforming standards

CE Marking
FCC Rule


48 (W) mm x 96 (H) mm x 115 (D) mm
Case depth: approx. 105 mm (when panel-mounted)


Approx. 400 g


ERF-series specific resistance sensor, cell constant 1.0 /m (0.01 /cm)