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    testo 635-1 - Humidity measuring instrument

    0560 6351
    $ 580.00
    1
  1. Probes available as an option mean you can measure air humidity, temperature, absolute pressure, and dew point in compressed air
  2. Measures air moisture, material equilibrium moisture, pressure dew point
  3. Calculates dew point and dew point distance
  4. Cyclical printing of readings once a minute, for example
  5. The testo 635-1 temperature and humidity measuring instrument enables you to measure the temperature, air humidity, and dew point – in compressed air as well. State of the art technology and a large selection of probes, which are available optionally, allow for a wide variety of measuring possibilities.
    The testo 635-1 is for measuring air moisture, material equilibrium moisture, and pressure dew point in compressed air systems. Up to 3 temperature or humidity probes can be displayed; data transmission is radio-controlled, or wireless. Measurement data can be transmitted by infrared to the Testo printer. It is also possible, during cyclical printing, to print measurement data once every minute, for example.
    The testo 635-1 immediately displays the dew point difference between ambient air and the wall surface, when analyzing moisture on walls and ceilings.
    There are precision probes up to -60°C tpd available to inspect pressure dewpoint in compressed air systems. The humidity sensor developed by Testo has proven itself world-wide and has outstanding features in terms of precision, long-term stability, temperature resistance and robustness.

    testo 635-1 temperature and humidity measuring instrument, including calibration protocol and batteries
    Caution: The instrument can only be commissioned with a probe. These are available separately.

    Temperature - NTC

    Measuring range
    -40° to 302 °F / -40 to +150 °C
    Accuracy
    ±0.5 % of mv (Remaining Range)
    ±0.7 °F (167° to 211.8 °F) / ±0.4 °C (+75 to +99.9 °C)
    ±0.4 °F (-13° to 166.8 °F) / ±0.2 °C (-25 to +74.9 °C)
    ±0.7 °F (-40° to -13.2 °F) / ±0.4 °C (-40 to -25.1 °C)
    Resolution
    0.1 °F / 0.1 °C

    Temperature - Type K TC

    Measuring range
    -328.0° to 2498 °F / -200 to +1370 °C
    Accuracy
    ±0.5 °F (-76° to 140 °F) / ±0.3 °C (-60 to +60 °C)
    ±(0.4 °F + 0.5 % of mv) (Remaining Range) / ±(0.2 °C + 0.5 % of mv) (Remaining Range)
    Resolution
    0.1 °F / 0.1 °C

    Humidity - Capacitive

    Measuring range
    0 to +100 %rH
    Accuracy
    See probe data
    Resolution
    0.1 %rH

    Air Probes

  6. Air Probes
    Robuster Luftfühler, TE Typ K
      Rugged air probe, T/C Type K  
      :
      0602 1793
      $ 103.00
      1
    • Dewpoint Pressure Probe

      Humidity probes

      Immersion / Penetration Probe

    • Immersion / Penetration Probe
      Efficient and fast-action immersion probe, waterproof
      Efficient and fast-action immersion probe, waterproof, T/C Type K
        :
        0602 0593
        $ 164.00
        1
      • Immersion / Penetration Probe
        Waterproof immersion/penetration probe, TC Type K
        Waterproof immerstion/penetration probe, T/C Type K
          :
          0602 1293
          $ 78.00
          1
        • Immersion / Penetration Probe
          Fast-action, waterproof immersion/penetration probe
          Super-quick, waterproof immersion/penetration probe, T/C Type K
            :
            0602 2693
            $ 206.00
            1
          • Immersion / Penetration Probe
            Tauch-Messspitze, biegsam, TE Typ K
            Immersion tip, flexible
            Measuring range: -328° to 1832 °F (-200° to 1000 °C)
              :
              0602 5792
              $ 56.00
              1
            • Pressure Probe Accessories

            • Pressure Probe Accessories
              Absolutdrucksonde 2000 hPa
              Absolute pressure probe 29 psi
                :
                0638 1835
              • RFID Probe

              • RFID Probe
                T/C probe head for surface measurement
                T/C probe head for surface measurement (T/C Type K)
                  :
                  0602 0394
                  $ 123.00
                  1
                • RFID Probe
                  Compact professional humidity module
                  Humidity probe head
                    :
                    0636 9736
                    $ 346.00
                    1
                  • Surface probes

                  • Surface probes
                    Spare meas. head for pipe wrap probe, TC Type K
                    Spare measuring head with thermocouple strip for temperature probe with clamping bracket
                      :
                      0602 0092
                      $ 88.00
                      1
                    • Surface probes
                      Fast-reaction paddle surface probe
                      Fast-reaction paddle surface probe, for measurements in inaccessible places, e.g. narrow apertures and slots, TC Type K
                        :
                        0602 0193
                        $ 222.00
                        1
                      • Surface probes
                        Fast-action surface probe with sprung thermocouple strip
                        Fast-action surface probe with spring thermocouple , for uneven surfaces, short-term range to +932°F, T/C Type K
                          :
                          0602 0393
                          $ 216.00
                          1
                        • Surface probes
                          Efficient, waterproof surface probe with small measurement head
                          Efficient, waterproof surface probe with small measurement head for flat surfaces, T/C Type K
                            :
                            0602 0693
                            $ 196.00
                            1
                          • Surface probes
                            Fast-action surface probe with sprung thermocouple strip
                            Fast-action surface probe with spring thermocouple for uneven surfaces, short-term to +932°F, T/C Type K
                              :
                              0602 0993
                              $ 253.00
                              1
                            • Surface probes
                              Waterproof surface probe with widened measurement tip
                              Waterproof surface probe with widenend measurement tip for flat surfaces, T/C Type K
                                :
                                0602 1993
                                $ 109.00
                                1
                              • Surface probes
                                Flat head surface probe with telescopic handle max. 680 mm
                                Flat head surface probe with telescopic handle (max. 24 in.) for hard-to-reach areas, T/C Type K
                                  :
                                  0602 2394
                                • Surface probes
                                  Pipe wrap probe for pipe diameter 5 to 65 mm
                                  Pipe clamp probe for pipe diameter 0.2 to 2.5'', with replaceable measuring head. Measuring range to 536 °F short-term
                                    :
                                    0602 4592
                                    $ 232.00
                                    1
                                  • Surface probes
                                    Clamp probe for measurements on pipes
                                    Clamp probe for measurements on pipes, pipe diameter 0.6 to 1'' (max. 1''), meas. range to +266 °F short-term
                                      :
                                      0602 4692
                                      $ 124.00
                                      1
                                    • Surface probes
                                      Magnetic probe (TC type K) - for surface temperatures
                                      Magnetic probe, adhesive force approx. 20 N, with magnets, for measurements on metal surfaces
                                        :
                                        0602 4792
                                        $ 273.00
                                        1
                                      • Surface probes
                                        Magnetfühler, Haftkraft ca. 10 N, mit Haft-Magneten
                                        Surface temperature probe with magnet (TC type K), adhesive power 10 N – Measuring range -50 to +400°C
                                          :
                                          0602 4892
                                          $ 304.00
                                          1
                                        • Surface probes
                                          Temperature probe to determine U-value, triple sensor system
                                          Temperature probe to determine U-value, triple sensor system for measuring wall temperature, modelling clay included
                                            :
                                            0614 1635
                                            $ 407.00
                                            1
                                          • Surface probes
                                            Pipe wrap probe with velcro strip
                                            Temperature probe with Velcro (TC Type K)
                                              :
                                              0628 0020
                                              $ 97.00
                                              1
                                            • Thermocouples

                                              Additional Accessories

                                              Cases

                                              Country Specific RFID Handles

                                              Humidity RFID Probe

                                              Printer and accessories

                                              Localising mould

                                              Damp ceilings and walls may be a result of structural damage. In most cases, however, it is a sign of improper ventilation. Once the mould appears inside a house, the tenant assumes that moisture has come in from outside. Numerous disputes have erupted because of the issue of who is liable for the mould damage. However, it is difficult to find out who or what has caused the mould: the tenant or faulty structural design?

                                              Testo 635-1 is ideal for measuring moisture in ceilings and walls. Using the optional attachment temperature/moisture probe and optional surface temperature probe, the testo 635 automatically calculates the dew point distance. It provides initial information about whether mould is being caused by condensation, or from moisture ingress due to structural damage or faulty insulation.

                                              testo 635-1

                                              Monitoring production and storage conditions

                                              Our temperature/humidity measuring instruments are used around the world in production, storage and server rooms, museums, archives, cold storage warehouses, containers and sales counters.

                                              Manufacturers, carriers, or dealers of sensitive products must ensure that specified temperature or humidity values are observed during production and storage. The testo 635 offers the option of performing spot measurements in relevant places.

                                              The temperature/humidity measuring instrument testo 635-2 offers the user a wide range of humidity/moisture probes. It provides the option of measuring humidity, material moisture and U-value (for the thermal assessment of structural components). In addition to the standard probes, up to three radio probes can be connected to the device in parallel. Measurement results can be analysed, stored and documented using the supplied PC software.

                                              testo 635-1