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Testo 635-2 Thermohygrometer

Testo
SKU: TESTO6352
  • Air temperature measurement from -40˚C to 150˚C with ±0.2˚C accuracy
  • Works with up to three radio probes and two conventional probes
  • 10,000-reading internal memory for min/max/mean recording
More Info
Typically ships in 2-4 working days

Testo 635-2 Thermohygrometer

The Testo 635-2 Thermohygrometer works with a variety of probes to measure surface temperature (-200˚C to 1370˚C), air temperature (-40˚C to 150˚C), relative humidity (0 to 100% RH), and absolute pressure (0 to 2000 hPa). The meter is capable of working with up to three radio probes at once or two conventional probes (probes not included) although a separate radio module must be fitted in order to connect with radio probes. It can connect over a distance of 20m.

Alongside temperature, pressure and humidity, the Testo 635-2 is capable of calculating material equilibrium moisture, pressure dew point and U-value. Readings and calculations are shown on the backlit digital screen which can show both humidity and temperature simultaneously. It is possible to toggle between minimum, maximum and average values and a data hold function can freeze a reading on screen.

Operating the Testo 635-2 is very easy thanks to the intuitive menus and the meter also has an internal memory for 10,000 readings. These files can then be stored under the relevant site so they are easy to organise at a later date and user-profiles give quick access to the most important functions. Data transfer is possible using the PC software package and USB cable provided and the thermohygrometer is compatible with a Testo fast printer.

The Testo 635-2 has an IP54 ingress protection rating and is covered by a two-year warranty. It comes supplied with a software package, USB cable, AA battery and a calibration protocol.

Key Features

  • Air temperature range: -40˚C to 150˚C
  • Air temperature accuracy: ±0.2˚C
  • Air temperature resolution: 0.1˚C
  • Humidity range: 0 to 100%
  • Humidity resolution: 0.1% RH
  • Type K probe compatible
  • Compatible with absolute pressure probe
  • Backlit digital screen
  • Internal memory for 10,000 readings
  • USB cable and PC software provided
  • Calibration protocol

What's In The Box?

  • Testo 635-2 Thermohygrometer
  • 1 x AA battery
  • PC software package
  • USB cable
  • Calibration protocol
  • Testo 635-2 Instruction Manual
Specification

Temperature - NTC

  • Measuring range: -40° to 302 °F / -40 to +150 °C
  • Accuracy: ±0.4 °F (-13.0° to 166.8 °F) / ±0.2 °C (-25 to +74.9 °C); ±0.7 °F (-40.0° to -13.2 °F) / ±0.4 °C (-40 to -25.1 °C); ±0.7 °F (167.0° to 211.8 °F) / ±0.4 °C (+75 to +99.9 °C); ±0.5 % of mv (Remaining Range)
  • 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 + 0.3 % of mv) (Remaining Range) / ±(0.2 °C + 0.3 % 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

Absolute Pressure

  • Measuring range: 0.0 hPa to 800.0 InH₂O / 0 to 2000 hPa
  • Accuracy: See probe data
  • Resolution: 0.1 InH₂O / 0.1 hPa

General technical data

  • Dimensions: 9 x 3 x 2 in. / 220 x 74 x 46 mm
  • Operating temperature: -4° to 122 °F / -20 to +50 °C
  • Housing: ABS / TPE / Metal
  • Battery type: Alkaline, type AA
  • Battery life: 200 h
  • Storage temperature: -22° to 158 °F / -30 to +70 °C
  • Weight: 15 oz. / 428 g