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testo 635-1 - temperature and humidity measuring instrument

0560 6351
  • Probes available as an option mean you can measure air humidity, temperature, absolute pressure and dew point in compressed air
  • Two plug-in probes and 3 radio probes can be attached
  • Calculates dew point and dew point distance
  • Display of min., max. and mean values
  • 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 as an option, enable this wide variety of measuring possibilities.

    The testo 635-1 temperature and humidity measuring instrument is ideally equipped for checking the air humidity, temperature and dew point in living areas, in production, storage and server areas and in museums and cold stores. Measurements of the ambient absolute pressure and dew point in compressed air can be quickly and efficiently carried out with the testo 635-1.

    Attachable probes, which are available as an option, mean the measuring instrument can record the following values:

    • Air humidity
    • Material moisture
    • Pressure dew point in compressed air
    • Air temperature
    • Surface temperature
    • Core temperature
    • U-value
    • Absolute pressure

    The testo 635-1 temperature and humidity measuring instrument has two probe inputs for plug-in probes with cables. In addition, the testo 635-1 can receive readings by radio from up to three further temperature or humidity probes via wireless measurement data transfer and display them clearly.

    You need the optional radio module as well as radio probes for radio measurement data transfer. It is simply plugged into the testo 635-1 and can be retrofitted at any time. The radio signal between the radio probe and measuring instrument is effective over a distance of up to 20 meters.

    Robust, practical and easy to handle

    In addition to readings, the testo 635-1 temperature and humidity measuring instrument also displays min., max. and mean values.

    When the pressure dew point probe is attached, it can measure the pressure dew point in compressed air. If a humidity probe is attached to the measuring instrument, it can also measure the dew point and water content of indoor air along with the psychrometric temperature, in addition to air humidity and air temperature.

    The measuring instrument also calculates the dew point distance between indoor air and wall surface. In the event of mould in the home, this means you get an initial indication of whether mould has been caused by incorrect use of ventilation or by moisture ingress. You can find out more about the measurement of mould in the home with the testo 635-1 in the “Applications” tab.

    The temperature and humidity measuring instrument is really easy to use and the menu guidance is user-friendly. The display with its illumination function means the readings are easily legible even when visibility is poor. A solid housing reliably protects the measuring instrument from impacts.

    Documentation of measurement data with the testo 635-1 temperature and humidity measuring instrument

    Would you like to document your readings quickly and in a verifiable way? The optional testo fast printer enables you to print out measurement data such as air humidity or temperature really easily at any time.
    Use the practical cyclical printing function on the testo 635-1. It not only enables the printout of individual readings, but also of whole series of measurements on the testo fast printer at freely adjustable intervals (for example once a minute).

    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 +150 °C
    Accuracy
    ±0.4 °C (-40 to -25.1 °C)
    ±0.4 °C (+75 to +99.9 °C)
    ±0.5 % of mv (Remaining Range)
    ±0.2 °C (-25 to +74.9 °C)
    Resolution
    0.1 °C

    Temperature - TC Type K (NiCr-Ni)

    Measuring range
    -200 to +1370 °C
    Accuracy
    ±0.3 °C (-60 to +60 °C)
    ±(0.2 °C + 0.5 % of mv) (Remaining Range)
    Resolution
    0.1 °C

    Humidity - Capacitive

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

    Air probes

    Humidity probes

    Pressure dewpoint probes

    Radio handles and probe head

    Surface probes

  • Surface probes
    Spare meas. head for pipe wrap probe, TC Type K
    Spare measuring head for pipe wrap probes (TC type K) - Measuring range: -60 to +130°C
      :
      0602 0092
    • Surface probes
      Fast-reaction paddle surface probe
      Fast-reaction paddle surface probe (TC type K) - Measuring range: - 0 to +300°C
        :
        0602 0193
      • Surface probes
        Fast-action surface probe with sprung thermocouple strip
        Fast-action surface probe (TC type K) – measuring range -60 to +300 °C, short-term up to +500 °C
          :
          0602 0393
        • Surface probes
          Efficient, waterproof surface probe with small measurement head
          Waterproof surface temperature probe with a small measuring head (TC type K) – measuring range: -60 °C to +1000 °C
            :
            0602 0693
          • Surface probes
            Fast-action surface probe with sprung thermocouple strip
            Fast-action, angled surface temperature probe (TC type K) for flat and uneven surfaces – measuring range: -60 to +300 °C
              :
              0602 0993
            • Surface probes
              Waterproof surface probe with widened measurement tip
              Waterproof surface temperature probe with widened measuring tip (TC type K) for flat surfaces – measuring range -60 to +400 °C
                :
                0602 1993
              • Surface probes
                Flat head surface probe with telescopic handle max. 680 mm
                Surface temperature probe (TC Type K) with telescope
                  :
                  0602 2394
                • Surface probes
                  Pipe wrap probe for pipe diameter 5 to 65 mm
                  Temperature probe (TC type K) with clamping bracket for measurements on pipes with Ø 5-65 mm – Measuring range -60 to +130°C, briefly up to +280°C
                    :
                    0602 4592
                  • Surface probes
                    Clamp probe for measurements on pipes
                    Clamp probe (TC type K) for temperature measurements on pipes with Ø 15-25 mm – Measuring range -50 to +100°C, briefly up to +130°C
                      :
                      0602 4692
                    • Surface probes
                      Magnetic probe (TC type K) - for surface temperatures
                      Surface temperature probe with magnet (TC type K), adhesive power 20 N – Measuring range -50 to +170°C
                        :
                        0602 4792
                      • 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
                        • 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
                          • Surface probes
                            Pipe wrap probe with velcro strip
                            Temperature probe with Velcro (TC Type K)
                              :
                              0628 0020
                            • Thermocouples

                              immersion/ penetration probes

                              Cases

                              Certificates

                              Further accessories measuring instrument/probes

                              Printer and accessories

                            • Printer and accessories
                              testo-Schnelldrucker IRDA mit kabelloser Infrarot-Schnittstelle
                              testo fast printer IRDA
                                :
                                0554 0549
                              • Printer and accessories
                                Spare thermal paper
                                Spare thermal paper for printer, permanent
                                  :
                                  0554 0568
                                • Radio handles and probe head for surface measurement

                                  Radio handles, seperate county variant


                                  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