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    testo 6651 - Temperature/humidity transmitter for critical climates

    Product no. 0555 6651
    testo 6651
    Your advantages
  1. High system availability thanks to integrated self-monitoring and early warning
  2. Ethernet, relay and analog outputs enable optimum integration into individual automation systems
  3. P2A software for parametrization, adjustment and analysis saves time and money during commissioning and maintenance
  4. High measuring accuracy thanks to reliable and long-term stable humidity sensor technology
  5. The testo 6651 transmitter for demanding measuring tasks: In combination with the testo 660x probe series, the transmitter can master exceptionally demanding measuring tasks in air conditioning technology and numerous other fields of application.

    Description

    In combination with the testo 660x probe series, the testo 6651 transmitter is the ideal partner for carrying out sophisticated measurements in rooms, air conditioning ducts and process air.

    The testo 6651 temperature/humidity transmitter's wide range of applications:

    • Critical climate applications
    • Monitoring of comfortable climate conditions
    • Museums
    • Storing hygroscopic substances
    • Storing electronic components
    • Ripening/maturing processes (cheese, fruit, cold meats)
    • Bio research

    Technical highlights of the testo 6651 climate transmitter

    • High measuring accuracy up to ±(1.7 + 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, for direct activation of air-conditioning units (optionally via relay), in indoor climate monitoring systems (optionally via Ethernet connection)
    • Options for self-monitoring and early warning ensure a high level of system availability
    • Robust plastic 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 with high-precision, long-term stable Testo humidity sensor for a wide range of process temperatures and environments
    • Smart probe technology: Easy probe replacement, digital interface to the transmitter, intelligent calibration concept
    • Optionally available protective probe caps for special applications (made of stainless steel, PTFE, wire mesh filter or metal)
    • Quick and easy commissioning and maintenance using the P2A software for parametrization, adjustment and analysis

    Delivery Scope

    • testo 6651 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.

    Sensor

    Humidity probes

  6. Humidity probes
    testo 6602- Process IAQ probe for duct mounting
      Product no.:
      0555 6602
    • Humidity probes
      testo 6601 - Room and IAQ probe
        Product no.:
        0555 6601
      • Humidity probes
        testo 6604 - IAQ probe with cable
          Product no.:
          0555 6604
        • Accessories

          Accessories

        • Accessories
          P2A-software
          P2A PC software
            Product no.:
            0554 6020
          • Accessories
            Pressure-tight screw connection with PTFE ring
              Product no.:
              0554 1796
            • Accessories
              Ethernet connector
                Product no.:
                0554 6653