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High-precision humidity/temperature probe head

0636 9770
  • Intuitive: parallel determination of relative humidity and air temperature in indoor areas, including long-term measurement
  • Precise: carry out humidity measurements with an accuracy of ± (0.6% RH + 0.7 % of m.v.) in the range between 0 and 90% RH, calculation of wet bulb temperature, dew point and absolute humidity
  • Convenient: probe head is easy to attach to the universal handle with Bluetooth® or cable (available to order separately)
  • Intelligent calibration concept: only send in the probe head for calibration
  • More applications, less equipment: if you already own one of our probes with a universal handle, you can easily expand your portfolio of probes with the high-precision humidity/temperature probe head.
    Proven quality from Testo: you can depend on reliable measurement results, because the probe head is equipped with our high-precision, long-term stable humidity sensor. This measures the humidity with an accuracy of ± (0.6% RH + 0.7% of m.v.) in the range between 0 and 90% RH and is traceable to international humidity standards, such as ILAC, PTB and NIST.

    High-precision humidity/temperature probe head including calibration protocol.

    Please do not use the probe head in condensing atmospheres. For continuous application in high-humidity ranges
        > 80% RH at ≤ 30 °C for > 12 h
        > 60% RH at > 30 °C for > 12 h
    please contact Testo Service or contact us via the Testo website.

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                          :
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                            :
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                              :
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                              Universal cable handle for connecting probe heads
                                :
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                                  :
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                                                            :
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                                                            • testo 440 Hot Wire Kit
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                                                                :
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                                                                1
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                                                                  :
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                                                                          :
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                                                                        • Temperature - NTC

                                                                          Measuring range
                                                                          -4° to 158 °F / -20 to +70 °C
                                                                          Accuracy
                                                                          ±0.5 °F (59° to 86 °F) / ±0.3 °C (+15 to +30 °C)
                                                                          ±0.9 °F (Remaining Range) / ±0.5 °C (Remaining Range)
                                                                          Resolution
                                                                          0.0 °F / 0.01 °C

                                                                          Humidity - Capacitive

                                                                          Measuring range
                                                                          0 to 100 %rH
                                                                          Accuracy
                                                                          Hysteresis: ±0.4 %rH
                                                                          ±(1.0 %rH + 0.7 % of mv) (90 to 100 %rH)
                                                                          long-term stability: ±1 %RH / year
                                                                          ±0.03 %rF/K (k=1)
                                                                          ±(0.6 %rH + 0.7 % of mv) (0 to 90 %rH)
                                                                          Resolution
                                                                          0.01 %rH

                                                                          General technical data

                                                                          Storage temperature
                                                                          -4° to 158 °F / -20 to +70 °C
                                                                          Weight
                                                                          0.7 oz. / 20 g
                                                                          Dimensions
                                                                          6.3 x 1.1 x 1.1 in. / 160 x 28 x 28 mm
                                                                          Operating temperature
                                                                          -4° to 158 °F / -20 to +70 °C
                                                                          Diameter probe shaft
                                                                          0.472 in. / 12 mm
                                                                          Length probe shaft
                                                                          5.512 in. / 140 mm
                                                                          Product colour
                                                                          Black