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    testo 635-2 - Temperature and moisture meter

    0563 6352
  1. Optional sensors for moisture / temperature / pressure dew point / absolute pressure measurements
  2. 2 plug-in and 3 wireless sensors
  3. Super-size memory for up to 10,000 readings
  4. USB cable, PC software for logging and archiving measuring data
    5. The testo 635-2 temperature and moisture meter measures the temperature and moisture of different types of materials, surfaces, and environments, with a wide range of optional sensors.
    The testo 635-2 temperature and moisture meter can be used to carry out different measurements in the field of air conditioning. A wide range of optional sensors and probes provide information on:
    • Relative humidity
    • Material moisture
    • Material compensation moisture
    • Pressure dew point in compressed air systems
    • HTC value
    • Air temperature
    • Surface temperature
    • Core temperature
    • Absolute pressure
    Capacity for 2 connectable sensors and 3 temperature / moisture wireless sensors, whose measurements can be picked up by a wireless module (optional) over a distance of up to 65 feet. The results are presented on an easy to read display.

    Rugged. Practical. Easy to use.

    The testo 635-2 temperature and moisture meter can display min/max/avg values, and calculate the dew point difference between the indoor air and the surface of the wall. This allows you to analyze moisture levels at ceilings and walls. Individually configured characteristic curves ensure the material moisture content is displayed reliably.  
    Both the meter and the menu guide are simple and comfortable to use. A backlit display allows you to read the measurements in poor lighting, and a rugged case protects the meter against impact.

    Saving, transferring, printing out data – easy as pie

    Save measuring sites and allocate measuring data to the relevant site. Create individual profiles to perform parallel long term / material moisture measurements. Save up to 10,000 readings (individual measurements and series) to your meter. There’s also a USB cable and software for transferring your data comfortably to your PC.
    And last but by no means least, the turbo printer (optional) provides you with on the spot printouts.

    testo 635-2 temperature and moisture meter, PC software, USB data cable, calibration protocol, and batteries

    PLEASE NOTE: sensor required (not in scope of supply).

    Temperature - NTC

    Measuring range
    -40° to 302 °F / -40 to +150 °C
    Accuracy
    ±0.5 % of mv (Remaining Range)
    ±0.4 °F (-13.0° to 166.8 °F) / ±0.2 °C (-25 to +74.9 °C)
    ±0.7 °F (167° to 211.8 °F) / ±0.4 °C (+75 to +99.9 °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° 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

  5. Air Probes
    Robuster Luftfühler, TE Typ K
      Rugged air probe, T/C Type K  
      :
      0602 1793

      • Dewpoint Pressure Probe

    • Dewpoint Pressure Probe
      Drucktaupunktfühler zur Messung in Druckluftsystemen
      Pressure dewpoint probe for measurements in compressed air systems
        :
        0636 9835
      • Dewpoint Pressure Probe
        Precision pressure dew point probe
        Precision pressure dewpoint probe for measurements in compressed air systems, including certificate with test point -40°F tpd
          :
          0636 9836

          • Humidity probes

        • Humidity probes
          Dünner Feuchtefühler mit abgesetzter Elektronik
          Thin humidity probe with built-in electronics, incl. 4 attachable Teflon protection caps for material moisture equilibrium measurement
            :
            0636 2135
          • Humidity probes
            Robust humidity probe for meas. up to +257 °F, short-term up to +284 °F, Ø 0.47 ", e.g. exhaust ducts, and for meas. of material equilibrium moisture, e.g. bulk goods
              :
              0636 2161
            • Humidity probes
              Streufeldsonde
              Scatter field probe for fast and damage-free material moisture measurement, with probe cable 1.2 m
                :
                0636 6160
              • Humidity probes
                Feuchte-/Temperaturfühler
                Humidity/temperature probe
                  :
                  0636 9735

                  • 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
                  • Immersion / Penetration Probe
                    Waterproof immersion/penetration probe, TC Type K
                    Waterproof immerstion/penetration probe, T/C Type K
                      :
                      0602 1293
                    • Immersion / Penetration Probe
                      Fast-action, waterproof immersion/penetration probe
                      Super-quick, waterproof immersion/penetration probe, T/C Type K
                        :
                        0602 2693
                      • Immersion / Penetration Probe
                        Tauch-Messspitze, biegsam, TE Typ K
                        Immersion tip, flexible
                        Measuring range: -328° to 1832 °F (-200° to 1000 °C)
                          :
                          0602 5792

                          • 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
                            • RFID Probe
                              Compact professional humidity module
                              Humidity probe head
                                :
                                0636 9736

                                • 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
                                • 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
                                  • 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
                                    • 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
                                      • 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
                                        • 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
                                          • 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
                                              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
                                              • 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
                                                • 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

                                                      • Thermocouples
                                                        Thermocouple with TC adapter, flexible, 800 mm long
                                                        Thermocouple with T/C adapter, flexible, 32 in. long, fibre glass, T/C Type K
                                                          :
                                                          0602 0644
                                                        • Thermocouples
                                                          Thermocouple with TC adapter, flexible, length 1500 mm
                                                          Thermocouple with T/C adapter, flexible, 60 in. long, fibre glass, T/C Type K
                                                            :
                                                            0602 0645
                                                          • Thermocouples
                                                            Thermocouple with TC adapter, flexible, 1500 mm long, PTFE
                                                            Thermocouple with T/C adapter, flexible, 60 in. long, PTFE, T/C Type K
                                                              :
                                                              0602 0646

                                                              • Additional Accessories

                                                            • Additional Accessories
                                                              Stainless steel sintered cap, Ø 0.47 in.
                                                                :
                                                                0554 0641
                                                              • Additional Accessories
                                                                Control and adjustment set for Testo humidity probes
                                                                testo saline pots for control and humidity adjustment of humidity probes, 11.3 %RH and 75.3 %RH with adapter for humidity probe.
                                                                  :
                                                                  0554 0660
                                                                • Additional Accessories
                                                                  Sintered PTFE filter,
                                                                  Teflon sintered filter, Ø 0.47 in., for corrosive substances
                                                                    :
                                                                    0554 0756

                                                                    • Cases

                                                                  • Cases
                                                                    testo 0516 1435 case
                                                                    Service case for measuring instrument, probe and accessories, dimensions 518 x 398 x 155 mm
                                                                      :
                                                                      0516 1435
                                                                    • Cases
                                                                      testo 0516 1035 case
                                                                      Service case for measuring instrument, probe and accessories, dimensions 454 x 319 x 135 mm
                                                                        :
                                                                        0516 1035
                                                                        $ 170.00
                                                                        1

                                                                        • Country Specific RFID Handles

                                                                      • Country Specific RFID Handles
                                                                        Radio handle for plug-in probe heads
                                                                        Wireless handle for attachable plug-in probe heads, incl. T/C adapter, approved for USA & Canada
                                                                          :
                                                                          0554 0191

                                                                          • Humidity RFID Probe

                                                                        • Humidity RFID Probe
                                                                          Radio Module for measuring instrument
                                                                          Radio module for measuring instrument, 869.85 MHz, approval for the countries: DE, FR, UK, BE, NL, ES, IT, SE, AT, DK, FI, HU, CZ, PL, GR, CH, PT, SI, MT, CY, SK, LU, EE, LT, IE, LV, NO
                                                                            :
                                                                            0554 0188
                                                                          • Humidity RFID Probe
                                                                            Radio Module for measuring 915.00 MHz
                                                                            Wireless module for measuring instrument, 915.00 MHz FSK, approved for USA & Canada
                                                                              :
                                                                              0554 0190

                                                                              • Printer and accessories

                                                                            • Printer and accessories
                                                                              Plug-in Power supply
                                                                              Power Supply for products with a Mini-B USB connection.  5 VDC 500 mA with European adapter, 100-250 VAC, 50-60 Hz.  Includes interchangeable "plug" types for use in several countries.Plug-in Power supply, 5 VDC 500 mA with European adapter 
                                                                                :
                                                                                0554 0447
                                                                                $ 38.25
                                                                                1
                                                                              • Printer and accessories
                                                                                testo-Schnelldrucker IRDA mit kabelloser Infrarot-Schnittstelle
                                                                                Compact printer, with IRDA technology offers fast, easy to read printouts of measurements at every job site.  Internal magnets will hold the printer to magnetic surfaces for hands free operation. *Compatible with any Testo device capable of IR or IRDA
                                                                                  :
                                                                                  0554 0549
                                                                                  $ 356.15
                                                                                  1
                                                                                • Printer and accessories
                                                                                  Spare thermal paper
                                                                                  Spare thermal paper, permanent ink
                                                                                    :
                                                                                    0554 0568
                                                                                    $ 39.10
                                                                                    1
                                                                                  • Printer and accessories
                                                                                    External fast charger
                                                                                    External recharger incld. 4 Ni-NMH rechargeable batteries with built-in international power supply - 100-240 V, 300 MA, 50/60 Hz, 12 VA/instrument
                                                                                      :
                                                                                      0554 0610

                                                                                      • Measuring material moisture

                                                                                      Monitoring the moisture in construction materials and different timber is an important part of everyday work in the most diverse areas. For many users, measuring the material moisture as quickly and as non-destructively as possible is crucial.

                                                                                      Whether it is used to assess the screed drying process, further processing, or the combustibility of wood, our testo 635-2 hygrometer can be used to examine the moisture content in many different construction materials and types of wood.

                                                                                      testo 635-2

                                                                                      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 635-2 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.

                                                                                      The supplied PC software can be used to document and analyse the measurement data.

                                                                                      testo 635-2

                                                                                      Monitoring drying processes

                                                                                      Whether freshly laid screed, or monitored drying of moisture damage, timely determination of the required moisture level will save time and therefore money.

                                                                                      Screeds are laid in the in interior works stage, generally after plastering. The flooring and painting and decorating then follow. The drying behaviour is therefore a significant factor in the works schedule, primarily because the laying of flooring depends on this.

                                                                                      The moisture measurement establishes readiness for flooring; liability for the flooring is thus transferred to the respective trade installing the flooring. An important part of this work is therefore documentation and assurance in the testing for readiness for flooring.

                                                                                      What is the extent of moisture damage and what consequences can be expected in terms of time and costs? These questions have to be answered in order to decide which auxiliary tools and materials are to be used to speed up the drying process.

                                                                                      The t 635-2 and attachment scatter field probe can be used to measure the moisture in the construction material.

                                                                                      Using a thin moisture probe combined with the testo 635-2 the moisture of construction materials can be determined by means of an equilibrium moisture measurement. To do this, the probe has to be inserted in a borehole in the material being measured and sealed. The relevant material characteristic can be manually entered into the device or via software. After several hours, equilibrium with the material has taken place and the testo 635-2 displays the material moisture.

                                                                                      testo 635-2

                                                                                      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 635-2

                                                                                      U-value measurement in old buildings

                                                                                      When redeveloping or renovating old buildings, it is crucial to be able to determine quickly if heat is being lost through the windows and walls. Only then can energy costs be reduced and redevelopment measures carried out efficiently.

                                                                                      When assessing thermal transmission, e.g. in old buildings in need of renovation, the U-value is one of the most important values. It enables thermal assessment and monitoring of the installed material.

                                                                                      3 temperature values are required for calculating the U-value:

                                                                                      • Outside temperature
                                                                                      • Surface temperature of the internal wall
                                                                                      • Indoor air temperature

                                                                                       

                                                                                      A radio probe is needed to determine the U-value; this is placed in position outside. It transmits the readings to the measuring instrument inside. To measure the surface temperature the three wires of the U-value probe are attached to the wall with plasticine. The air temperature is recorded by a sensor located on the probe plug. The measuring instrument testo 635-2 automatically calculates the U-value from the three values and shows this on the display. The advantage: there is no need for manual calculation; the result is quick and accurate.

                                                                                      testo 635-2

                                                                                      Measuring wood moisture quickly and non-destructively

                                                                                      The testo 635-2 uses the optional attachment scatter field probe (item no.: 0636 6160) to quickly and non-destructively examine the material moisture in timber. Characteristic curves are available for measuring wood moisture in soft and hard woods, and chipboard. These characteristic curves were developed in cooperation with the LPI institute.

                                                                                      The measurement results are calculated up to a depth of 5 cm and can be recorded at the touch of a button. The readings are displayed in percent by weight in comparison to the dry mass of the material.

                                                                                      Measurement data can be stored and documented using PC software.

                                                                                      testo 635-2