Panel-mount type dissolved oxygen meter (DO meter)

For control and management in wastewater treatment and production processes.

Ideal for the management of aeration tanks at facilities such as wastewater treatment plants and industrial wastewater treatment facilities. The use of a panel mount transmitter allows for cost reduction at the time of installation.


Division: Process Water
Manufacturing Company: HORIBA Advanced Techno Co., Ltd.

Possible to be used in a panel-mounted configuration

This transmitter is easy to install while providing standard functions.

 Product name Dissolved oxygen meter
Model  HD-480
Measurement methodGalvanic cell method
Measuring range
  • Dissolved oxygen 0 mg/L to 20 mg/L, 0.01 mg/L resolution
  • Saturation 0% to 200%, 1% resolution
  • Temperature 0℃ to 40℃, 0.1℃ resolution
RepeatabilityWithin ±0.5% of the full scale (by equivalent input)
LinearityWithin ±0.5% of the full scale (by equivalent input)
  • 4 mA to 20 mA DC, input/output isolated type
  • Max. load resistance: 900 Ω
  • Transmission output range: Freely settable within the measuring 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 limit operation”, “lower limit operation”
   (ON/OFF control), “anomaly alarm”, “during maintenance”, and “temperature”
Calibration function
  • Air calibration and solution calibration
  • Salinity compensation (0.0% to 5.0%)
  • Temperature calibration (two points)
Transmission output hold featureSelectable from previous value hold, optional value hold or continuous (however,only the previous value hold is available in the maintenance mode)
Self-diagnosis function
  • Calibration failure: Zero error and sensitivity error
  • Sensor diagnosis: Short-circuit or disconnection of temperature sensor
  • Measuring range error
  • Product error
Temperature-compensated range0℃ to 40℃
Ambient temperature−5℃ to 45℃
Relative humidity20% to 85% (without dew condensation)
Storage temperature−25℃ to 65℃
Power supplyRated voltage 100 V to 240 V AC, 50/60 Hz, 10 VA (max.)
StructureIndoor-use panel installation type
  Panel case: ABS, Terminal: PBT
Panel: IP65 dust and water proof structure
Protective structurePanel: IP65 (IEC60529, JIS C0920)
Rear case: IP20, Terminal:IP00
Class II device (IEC61010-1)
Pollution level 2 (IEC61010-1)
CE markingEMC :EN61326-1
    Class A, Industrial electromagnetic environment
Safety :EN61010-1
RoHS  :EN50581
    9. Industrial monitoring and control instruments
FCC rulesPart15 Class A
External dimensions48 (W) mm × 96 (H) mm × 115 (D) mm
Case depth: approx. 105 mm
MassApprox. 400 g
Compatible sensorsProbeDP-100Operating temperature: 0℃ to 45℃


5400, 5405


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