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EE31 is optimized for reliable humidity and temperature measurement in demanding industrial applications up to 180°C (356°F). In addition to precise measurement of relative humidity and temperature, the transmitter calculates additional parameters such as dew point, absolute humidity or mixing ratio.

Various models are available including wall, duct and units with remote probe. The remote probe can be employed up to 180°C (356°F) and the pressure tight version up to 20bar.

The three-part design of rugged enclosure in polycarbonate or aluminium allows easy mounting and replacement. The measurands are available on two analogue outputs and on a serial interface.

An optional relay output can be used for alarms and process control. The optional proprietary coating protects the sensor elements against corrosive and electrically conductive pollution. The user can freely configure the outputs and perform an adjustment with the optional configuration kit.

Key features

  • Highest measurement accuracy
  • Outstanding long term stability
  • Wide working temperature range
  • Temperature compensation
  • Rugged enclosure in polycarbonate or aluminium
  • Flexible enclosure concept for easy mounting and sensor exchange
  • Pressure tight probe up to 20 bar
  • Two analogue or alarm outputs
  • Optional RS-485 and standard RS-232 interface
  • Wide choice of filter caps according to application
  • Optional pluggable probe
  • Optional connector for power supply and outputs
  • Optional LCD display
  • Optional integrated power supply
  • Optional sensor coating for polluted environments
  • Easy field adjustment by the user
  • Outputs freely configurable by user

Typical applications

  • climate and test chambers
  • process technology
  • dryers
  • clean rooms
  • storage rooms

Techn. data

  • 0...100% RH
    -40...180 °C (-40...356 °F)
    and derived quantities

    Measuring range
  • ±1.3% RH
    ±0.2 °C (0.36 °F)

  • RS232C + optional RS485

    Serial interface
  • 0-5/10V, 0/4-20mA

  • 24V AC/DC


Product inquiry

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  • HA010105

    PTFE Filter


    Material: PTFE sintered
    Pores size: 50 µm
    Length: 33mm (1.30")


    For very dirty, oily environment

    T range: -40...180°C (-40...176°F)
    Response time t10/90: 14s

    Typical applications

    Industrial process control
    Chemical industry
    Very polluted environment
    Unsuitable for condensing environment

    Suitable for Products:

  • HA010603

    RS232 to RS485 Converter


    • Converter from RS232 to RS485
    • Supports AutoPro, i.e. automaticadjustement of the Baudrate from300 bps to 115200 bps
    • Enables to control 256 data acquisitionmodules in a RS-485 network
    • Solation 3000 Vrms

    Suitable for Products:

  • HA010301

    RS232 Interface Cable for Screw Terminals


    • RS232 interface cable for connection to screw terminals on the board
    • cable length: 2m (6.6ft)




    Suitable for Products:

  • HA010304

    RS232 Interface Cable with Pin Connector


    • RS232 interface cable to connect directly on the board
    • cable length: 2m (6.6ft)



    Suitable for Products:

  • HA010311

    RS232 Interface Cable with External Plug


    • RS232 interface cable to plug into theexternal socket on the housing C06
    • cable length: 2m (6.6ft)




    Suitable for Products: