Industrial conductivity meter (high concentration type) HE-480H


The HE-480H industrial conductivity meter is a high-concentration conductivity meter using a four-electrode method, with a wide measurement range of 0 - 50 S / m. It is suitable for a wide range of tasks, from managing the concentration of all types of medicinal solutions, to managing the concentration of liquid fertilizers used in hydroponic farming.


  • Capable of measurements in a wide range, up to 50 S / m (500 mS / cm)
    The HE-480H is applicable to many different tasks, from managing the concentration of all types of solutions used as ingredients, to measuring salt concentrations or managing fertilizers.
  • Includes sea salt - NaCl conversion function
    The salt concentration displayed is converted based on conductivity conversion data.
  • Temperature compensation suited to a range of tasks
    You can select the appropriate temperature compensation for the temperature characteristics of the fluid you are measuring.
  • Self-diagnosis function for sensor faults
    The sensor automatically determines whether it has deteriorated, and displays an error message.
  • 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.

Manufactured by HORIBA Advanced Techno




Measurement method

Electrode type (4-electrode method)

Cell constant

1.0 / cm

Measuring range

Measurement range
(S / m)

0.000 to 2.000

0.00 to 20.00

Measurement range
(mS / cm)

0.00 to 20.00

0.0 to 200.0

Seawater salinity
conversion value (%)

0.00 to 4.00

NaCl salinity
conversion value (%)

0.0 to 20.0

0 °C to 100 °C (The displayed decimal place is selectable among 0, 1,and 2.)

Repeatability Within

Conductivity display

Within ± 0.5 % of the full scale

(in equivalent input)

Salinity conversion

Within ± 1 % of the full scale

Linearity Within

Conductivity display

Within ± 0.5 % of the full scale

(in equivalent input)

Salinity conversion

Within ± 1 % of the full scale


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


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


  • Temperature characteristics of NaCl
  • Freely selectable reference temperature and temperature coefficient
  • No temperature compensation

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


FES series conductivity sensor, cell constant 100 / m (1.0 / cm)
(The measurement range differs depending on the sensor model.)

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