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testo 835-H1 - 4 point Infrared Thermometer

0560 8353
testo 835-H1
testo 835-H1
  • Multi-Function Measurement – Measures temperature, moisture, and dew point in one device.
  • Safe & Precise Distance Measurement – 50:1 optics and 4-point laser ensure accuracy from afar.
  • Built-in memory for up to 200 readings – Store and analyse data with free-to-download software.
  • Surface Moisture Calculation – Helps detect mould risk before it develops.
    • The testo 835-H1 is a high-precision infrared thermometer with an integrated moisture sensor, enabling simultaneous temperature, moisture, and dew point measurement. Featuring 4-point laser targeting, 50:1 optics, and surface moisture calculation, it is ideal for building diagnostics, HVAC applications, and industrial maintenance.
    The testo 835-H1 Infrared Thermometer is the perfect tool for professionals needing non-contact temperature and moisture measurements in HVAC, building diagnostics, and industrial applications. It allows for the measurement of surface temperature, relative humidity, dew point, and surface moisture, helping to detect mould risks before they develop.

    Equipped with 4-point laser targeting and 50:1 optics, the testo 835-H1 ensures precise measurements over long distances, eliminating errors and improving efficiency. The adjustable emissivity function ensures accuracy on different surface materials. Additionally, the device supports external temperature probe connectivity for contact measurements when needed.

    Designed for ease of use, the testo 835-H1 features an intuitive menu, adjustable alarm thresholds, and a memory capacity of up to 200 readings. The free-to-download software enables easy data analysis and reporting.

    With a backlit display for readability in all lighting conditions and optional accessories such as a tripod and carry case, the testo 835-H1 is the ultimate tool for efficient, precise, and versatile temperature and moisture analysis.

    testo 835-H1 infrared thermometer plus moisture measuring function and 4-Point laser marking, measurement data management, moisture module, batteries, calibration protocol.

    Temperature - TC Type K (NiCr-Ni)

    Measuring range
    -50 to +600 °C
    Accuracy
    ±(0.5 °C + 0.5 % of mv)
    Resolution
    0.1 °C

    Temperature - Infrared

    Measuring range
    -30 to +600 °C
    Accuracy
    ±2.5 °C (-30.0 to -20.1 °C)
    ±1.0 °C (0.0 to +99.9 °C)
    ±1 % of mv (Remaining Range)
    ±1.5 °C (-20.0 to -0.1 °C)
    Infrared resolution
    0.1 °C

    Humidity - Capacitive

    Measuring range
    0 to 100 %RH
    Accuracy
    ±2 %RH
    ±0.5 °C
    Resolution
    0.1 %RH
    0.1 °C
    0.1 °Ctd

    Air probes

  • Air probes
    Robuster Luftfühler, TE Typ K
    Short response time – due to exposed sensor design.
      :
      0602 1793

      • Food probes

    • Food probes
      Wasserdichter Lebensmittelfühler aus Edelstahl (IP65)
      Waterproof stainless steel food probe (TC type K) - measuring range: -60 to +400°C
        :
        0602 2292

        • Surface probes

      • Surface probes
        Spare meas. head for pipe wrap probe, TC Type K
        Replaceable measuring head with thermocouple strip for temperature probe with clamping bracket 0602 4592
          :
          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 response time (3 seconds) thanks to the thermocouple strip
              :
              0602 0393
            • Surface probes
              Efficient, waterproof surface probe with small measurement head
              Fast Response Time  – Ensures quick and accurate measurements.
                :
                0602 0693
              • Surface probes
                Fast-action surface probe with sprung thermocouple strip
                Fast response time (3 seconds) thanks to the thermocouple strip
                  :
                  0602 0993
                • Surface probes
                  Waterproof surface probe with widened measurement tip
                  Extra-wide measuring tip – ideal for accurate readings on flat surfaces.
                    :
                    0602 1993
                  • Surface probes
                    Pipe wrap probe for pipe diameter 5 to 65 mm
                    With clamping bracket: enables quick, easy attachment of the probe to pipes with a diameter of 5 to 65 mm
                      :
                      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
                        Thermocouple type K 
                          :
                          0602 4792
                        • Surface probes
                          Magnetfühler, Haftkraft ca. 10 N, mit Haft-Magneten
                          Self-adhesive thanks to a magnet: probe for measuring surface temperature on metal surfaces
                            :
                            0602 4892
                          • Surface probes
                            Pipe wrap probe with velcro strip
                            With Velcro: makes it easy to attach the surface probe to pipes with a diameter of up to 120 mm
                              :
                              0628 0020

                              • immersion/ penetration probes

                            • immersion/ penetration probes
                              Efficient and fast-action immersion probe, waterproof
                              Short response time of 2 seconds
                                :
                                0602 0593
                              • immersion/ penetration probes
                                Waterproof immersion/penetration probe, TC Type K
                                Fast response time – approx. 7 seconds.
                                  :
                                  0602 1293
                                • immersion/ penetration probes
                                  Fast-action, waterproof immersion/penetration probe
                                  Fast 3-Second Response Time – Thermocouple strip enables quick and precise measurement.
                                    :
                                    0602 2693
                                  • immersion/ penetration probes
                                    Tauch-Messspitze, biegsam, TE Typ K
                                    Immersion measuring tip with TC plug type K - for fast temperature measurements
                                      :
                                      0602 5792
                                      • Contact Us
                                      Testo Ltd
                                      Newman Lane
                                      GU34 2URAlton
                                      HampshireUnited Kingdom
                                      01420 544433

                                      Opening hours

                                      Monday-Thursday: 8:30am - 17:00pmFriday: 8:30am - 16:00pm
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