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testo 6681 - Temperature and Humidity Transmitter

0555 6681
  • Maximum measuring accuracy thanks to reliable and long-term stable humidity sensor technology
  • Ethernet, relay and analog outputs enable optimum integration into individual automation systems
  • Suitable special probes for high-humidity and trace humidity applications and aggressive media
  • Robust, easy-to-clean metal housing
  • testo 6681 industrial humidity/temperature transmitter, accuracy up to ±1.0 %RH (depends on the probe), selectable signal outputs, optional display, optional ethernet or profibus module, output of all relevant humidity parameters, optional relay, optional 3rd analog output

    **NOTE: Please contact Testo to ensure proper configuration when ordering the testo 6681 Transmitter**

    The testo 6681 temperature and humidity transmitter is ideal for monitoring critical climate values in industrial processes or in research. The transmitter is designed for use in industry and is a reliable partner in trace humidity and compressed air process technology, drying and air conditioning technology.

    Areas of application for the testo 6681 temperature and humidity transmitter

    • Drying processes (e.g. drying tobacco, drying ceramics)
    • Painting installations
    • Food production (e.g. cheese processing, ripening fruit, drying pasta, mushroom cultivation)
    • Bio research
    • High-humidity applications
    • Sterilization processes in an H2O2 environment
    • Cleanrooms

    Technical highlights of the testo 6681 climate transmitter

    • Maximum measuring accuracy up to ±(1.0 + 0.007 x reading)
    • Reliable and long-term stable humidity sensor
    • Ethernet*, relay and analog outputs allow for versatile use, e.g. for control purposes (optionally 2 or 3 analog outputs), for direct activation of air-conditioning units (optionally via relay) or even in indoor climate monitoring systems (optionally via Ethernet connection)
    • Options for self-monitoring and early warning ensure a high level of system availability
    • Robust metal housing and water jet protection according to IP65
    • Optional 2-line display enables commissioning, adjustment and analysis without using a PC

    Enjoy all the benefits with the practical accessories

    • Wide range of high-quality digital probes available: To commission the transmitter, you need a connectable probe. Use, for example, probes for high humidity or trace humidity measurement, probes for aggressive media
    • Smart probe technology: Easy probe replacement, digital interface to the transmitter, intelligent calibration concept
    • Optional protective probe caps available for special applications (made of stainless steel, PTFE, wire mesh filter, metal, or a patented H2O2 protective cap)
    • Quick and easy commissioning and maintenance using the P2A software for parametrization, adjustment and analysis

    • testo 6681 humidity/temperature transmitter including instruction manual
    • Factory certificate

    Note: Please keep in mind that you need an attachable probe to commission the transmitter.

    * When using the Ethernet function, we recommend ordering the P2A software in order to be able to make the network settings.