HMP8 Humidity and Temperature Probe for Pressurized Processes, Modbus, 0.8%RH accuracy - Vaisala Online Store

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HMP8 Humidity and Temperature Probe for Pressurized Processes, Modbus, 0.8%RH accuracy

HMP8 Humidity and Temperature probe is designed for pressurized applications up to 40 bars, where adjustable installation depth and possibility to remove or insert the probe in the pressurized process is required. The design of the probe head is pressure and vapor proof and suitable for continuous temperatures in -40..+180 °C (-40..+356 °F). The sliding metal-to-metal seal at the process fitting allows adjustable installation depth between 41..149 mm

The HMP8 can be used as stand-alone Modbus RTU digital transmitter, or used together with INDIGO200 series of transmitters. The high-temperature tolerant cable in the probe is 2 meters. The probe can be connected directly to the Indigo201 or with M12/5M extension cables up to 30 m

The probe is equipped with HUMICAPR2 composite sensor. Sensor purge functionality improves measurement performance under applications where the probe is exposed to high chemical concentrations

Each probe is individually pressure tested. Process connection is ISO1/2"" or NPT1/2""

Included in the package:

  • HMP8 Humidity and Temperature probe
  • ISO1/2"" and NPT1/2"" process fittings
  • Traceable 5-point calibration report
  • Mounting clips
  • Calibration adapter for HMK15 calibrator
  • Quick guide

Not included in the package:

  • Indigo201 or Indigo202 transmitter, to be purchased separately
  • M12/5 extension cable
  • Ballvalve installation kit for swapping the probe from pressurized process (BALLVALVE-1)
  • HMP8 Humidity and Temperature Probe for Pressurized Processes, Modbus, 0.8%RH accuracy
    INDIGO HMP8 Humidity and Tempearature Probe for Pressurized Processes
    Standard delivery time for single unit: 1 week
    About delivery times »
    Warranty: 24 months
    About warranty »

    Part no. HMP8

    Quantity Price
    1690 € + VAT

    Detailed information

    Measurement parameter(s)Relative Humidity, Temperature, calculated humidity variables
    Measurement range0..100 %RH, -40..+180 °C
    Measurement accuracy+/- 0.8 %RH +/-0.1 °C (0.18 °F)
    Operating temperature -40 ... +60 °C probe body; -40..+180 °C (-40..+356 °F) probe head
    High temperaturePressurized process
    Operating pressure40 bar
    Operating voltage18..30 VDC
    Digital outputsModbus RTU (RS485)
    Housing classificationIP66
    Links See full specifications on

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