1. Home
    2. testo 635-2

    testo 635-2 - Temperature and humidity measuring instrument

    0563 6352
    Rs 64,475.00
  1. Optionally available sensors for moisture, temperature, pressure dew point and absolute pressure measurements
  2. 2 plug-in sensors and 3 wireless sensors can be connected
  3. Super-size memory for up to 10 000 readings
  4. USB cable and PC software for archiving and logging measuring data included
    5. The testo 635-2 temperature and humidity measuring instrument with its leading-edge technology and wide selection of optional sensors helps you in carrying out temperature and material moisture measurements on a variety of different materials, surfaces and environments.

    The testo 635-2 temperature and humidity measuring instrument is excellently equipped for carrying out a variety of measurements in the field of air conditioning. A wide selection of optionally available sensors and probes can be connected to the meter to provide you the following measuring data:
    • Relative humidity
    • Material moisture
    • Material compensation moisture
    • Pressure dew point in compressed air systems
    • HTC value
    • Air temperature
    • Surface temperature
    • Core temperature
    • Absolute pressure


    Testo 635-2 is available with two sensor ports for pluggable sensors and up to 3 further temperature or moisture sensors which can be connected to the instrument via wireless along with an easy-to-read display.

    Rugged, practical, easy to use
    In addition to all the other measurements, the testo 635-2 temperature and humidity measuring meter also equips you to analyze levels of moisture at ceilings and walls by and calculate the dew point difference between the indoor air and the surface of the wall along with displaying min, max and mean values. Individually configured characteristic curves ensure that the material moisture content is displayed reliably
    Both the meter and the menu guide are simple and comfortable to use with a backlit display which allows you to read the measurements even in poor lighting conditions. In addition, a strong protective case protects the meter effectively against any accidental knocks and bumps.

    Saving, transferring and printing out data
    as easy as pie with the testo 635-2 temperature and moisture meter
    It also allows you to save measuring sites and allocate the measuring data to the relevant site. Create individual user profiles to perform parallel long-term and material moisture measurements. Save up to 10 000 readings – individual measurements and measurement series – to your meter. The USB cable in the scope of supply can be used to connect your moisture meter to your PC or laptop and the software allows you to log and archive your measuring data comfortably and easily. The optionally available testo fast printer also allows you to print out the measuring data on the spot.

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

    PLEASE NOTE: a sensor (not in scope of supply) is required to operate the meter.

    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
    ±(0.2 °C + 0.5 % of mv) (Remaining Range)
    ±0.3 °C (-60 to +60 °C)
    Resolution
    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
    Robust air temperature probe (TC type K) – measuring range: -60 to +400 °C
      :
      0602 1793
      Rs 9,085.00

      • Humidity probes

    • Humidity probes
      Dünner Feuchtefühler mit abgesetzter Elektronik
      Thin humidity probe (Ø 4 mm) for measuring material moisture via the equilibrium moisture content – can be used in small bore holes and recesses
        :
        0636 2135
        Rs 59,675.00
      • Humidity probes
        Robust humidity probe for measuring the material equilibrium moisture content and humidity measurements at high temperatures
          :
          0636 2161
          Rs 75,630.00
        • Humidity probes
          Streufeldsonde
          Scatter field probe for fast and damage-free material moisture measurement, with probe cable 1.2 m
            :
            0636 6160
            Rs 46,575.00
          • Humidity probes
            Feuchte-/Temperaturfühler
            Temperature probe
              :
              0636 9735
              Rs 47,090.00

              • Pressure dewpoint probes

            • Pressure dewpoint probes
              Drucktaupunktfühler zur Messung in Druckluftsystemen
              Pressure dewpoint probe for measurements in compressed air systems
                :
                0636 9835
                Rs 116,105.00
              • Pressure dewpoint probes
                Precision pressure dew point probe
                Precision pressure dew point probe with measuring chamber – measuring range: -40 to +50 °C tpd
                  :
                  0636 9836
                  Rs 154,760.00

                  • Radio handles and probe head

                • Radio handles and probe head
                  Radio handle for plug-in probe heads
                  Radio handle for plug-in probe heads, 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 0189
                  • Radio handles and probe head
                    T/C probe head for surface measurement
                    T/C probe head for surface measurement (T/C Type K)
                      :
                      0602 0394
                    • Radio handles and probe head
                      Compact professional humidity module
                      Compact professional humidity module for wireless humidity/temperature measurement
                        :
                        0636 9736

                        • 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
                            Rs 18,810.00
                          • 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
                              Rs 18,165.00
                            • 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
                                Rs 16,475.00
                              • 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
                                  Rs 21,405.00
                                • 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
                                    Rs 9,085.00
                                  • Surface probes
                                    Flat head surface probe with telescopic handle max. 680 mm
                                    Surface temperature probe (TC Type K) with telescope
                                      :
                                      0602 2394
                                    • 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
                                        Rs 9,990.00
                                      • 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
                                          Rs 22,835.00
                                        • 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
                                            Rs 25,430.00
                                          • 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
                                              Rs 31,005.00
                                            • Surface probes
                                              Pipe wrap probe with velcro strip
                                              Temperature probe with Velcro (TC Type K)
                                                :
                                                0628 0020
                                                Rs 6,620.00

                                                • Thermocouples

                                              • Thermocouples
                                                Thermocouple with TC adapter, flexible, 800 mm long
                                                Flexible thermoelectric couple (TC type K, glass fibre) – Measuring range: -50 to +400°C
                                                  :
                                                  0602 0644
                                                  Rs 2,725.00
                                                • Thermocouples
                                                  Thermocouple with TC adapter, flexible, length 1500 mm
                                                  Flexible thermoelectric couple (TC type K, glass fibre) – measuring range -50 to +400°C
                                                    :
                                                    0602 0645
                                                    Rs 4,285.00
                                                  • Thermocouples
                                                    Thermocouple with TC adapter, flexible, 1500 mm long, PTFE
                                                    Flexible thermoelectric couple (TC type K, PTFE) – measuring range -50 to +250°C
                                                      :
                                                      0602 0646
                                                      Rs 4,415.00

                                                      • immersion/ penetration probes

                                                    • immersion/ penetration probes
                                                      Efficient and fast-action immersion probe, waterproof
                                                      Flexible, fast-action immersion probe (TC type K) – measuring range: -60 to +1000 °C
                                                        :
                                                        0602 0593
                                                        Rs 14,140.00
                                                      • immersion/ penetration probes
                                                        Waterproof immersion/penetration probe, TC Type K
                                                        Waterproof immersion/penetration probe (TC type K) – measuring range -60 to +400 °C
                                                          :
                                                          0602 1293
                                                          Rs 6,490.00
                                                        • immersion/ penetration probes
                                                          Fast-action, waterproof immersion/penetration probe
                                                          Fast-action immersion/penetration probe (TC type K) – measuring range: -60 to +800 °C
                                                            :
                                                            0602 2693
                                                            Rs 17,515.00
                                                          • immersion/ penetration probes
                                                            Tauch-Messspitze, biegsam, TE Typ K
                                                            Immersion measuring tip with TC plug type K - for fast temperature measurements
                                                              :
                                                              0602 5792
                                                              Rs 4,285.00
                                                            • immersion/ penetration probes
                                                              Radio immersion/penetration probe
                                                              Radio immersion/penetration probe, NTC, 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
                                                                :
                                                                0613 1001

                                                                • Certificates

                                                              • Certificates
                                                                Calibration certificate
                                                                ISO calibration certificate
                                                                  :
                                                                  0520 0006
                                                                • Certificates
                                                                  Calibration certificate
                                                                  ISO temperature calibration certificate for surface probes; with 3 measuring points: +60 / +120 / +180 °C
                                                                    :
                                                                    0520 0071
                                                                  • Certificates
                                                                    Calibration certificate
                                                                    ISO calibration certificate
                                                                      :
                                                                      0520 0083
                                                                    • Certificates
                                                                      Calibration certificate
                                                                      ISO dew point calibration certificate for pressure dew point probes/measuring instruments; with 2 measuring points: -40; -10 °C tpd
                                                                        :
                                                                        0520 0136
                                                                      • Certificates
                                                                        Calibration certificate
                                                                        DAkkS/DKD-calibration certificate
                                                                          :
                                                                          0520 0206

                                                                          • Further accessories measuring instrument/probes

                                                                        • Further accessories measuring instrument/probes
                                                                          Lithium battery, button cell
                                                                          Lithium battery, button cell, type CR 2032
                                                                            :
                                                                            0515 0028
                                                                          • Further accessories measuring instrument/probes
                                                                            Sintered stainless steel filter
                                                                              :
                                                                              0554 0641
                                                                            • Further accessories measuring instrument/probes
                                                                              Control and adjustment set for Testo humidity probes
                                                                              Control and calibration kit for Testo humidity probes
                                                                                :
                                                                                0554 0660
                                                                                Rs 39,700.00
                                                                              • Further accessories measuring instrument/probes
                                                                                Sintered PTFE filter,
                                                                                Sintered PTFE filter, Ø 12 mm, for corrosive media
                                                                                  :
                                                                                  0554 0756
                                                                                  Rs 7,135.00
                                                                                • Further accessories measuring instrument/probes
                                                                                  No picture available
                                                                                  Adhesive material for fixing and sealing
                                                                                    :
                                                                                    0554 0761

                                                                                    • Printer and accessories

                                                                                  • Printer and accessories
                                                                                    Plug-in Power supply
                                                                                    Plug-in mains adapter, 5 VDC 500 mA with European adapter, 100-250 VAC, 50-60 Hz
                                                                                      :
                                                                                      0554 0447
                                                                                      Rs 3,505.00
                                                                                    • Printer and accessories
                                                                                      testo-Schnelldrucker IRDA mit kabelloser Infrarot-Schnittstelle
                                                                                      testo fast printer IRDA
                                                                                        :
                                                                                        0554 0549
                                                                                        Rs 31,115.00
                                                                                      • Printer and accessories
                                                                                        Spare thermal paper
                                                                                        Spare thermal paper for printer, permanent
                                                                                          :
                                                                                          0554 0568
                                                                                        • Printer and accessories
                                                                                          External fast charger
                                                                                          External fast charger for 1-4 AA rech. batteries, incl. 4 Ni-MH rech. batteries with individual cell charging and charge control display, incl. impulse trickle charging, integrated discharge function, with built-in international mains plug, 100-240 V, 300 mA, 50/60 Hz
                                                                                            :
                                                                                            0554 0610

                                                                                            • Radio handles and probe head for surface measurement

                                                                                          • Radio handles and probe head for surface measurement
                                                                                            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
                                                                                            • Radio handles and probe head for surface measurement
                                                                                              Radio Module for measuring 915.00 MHz
                                                                                              Radio module for measuring instrument, 915.00 MHz FSK, approval for USA, CA, CL
                                                                                                :
                                                                                                0554 0190

                                                                                                • Radio handles, seperate county variant

                                                                                              • Radio handles, seperate county variant
                                                                                                Radio handle for plug-in probe heads
                                                                                                Radio handle for plug-in probe heads, 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 0189
                                                                                                • Radio handles, seperate county variant
                                                                                                  Radio handle for plug-in probe heads
                                                                                                  Radio handle for plug-in probe heads, incl. T/C adapter, approval for USA, CA, CL
                                                                                                    :
                                                                                                    0554 0191

                                                                                                    • 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

                                                                                                    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

                                                                                                    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