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Testo 635-1 Compact Pro Thermohygrometer

The Testo 635-1 is for measuring air moisture, material equilibrium moisture, and pressure dew point in compressed air systems.

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Testo 635-1 Compact Pro Thermohygrometer
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  • Testo 635-1 Compact Pro Thermohygrometer

The Testo 635-1 is for measuring air moisture, material equilibrium moisture, and pressure dew point in compressed air systems. Up to 3 temperature or humidity probes can be displayed; data transmission is radio-controlled, or wireless. Measurement data can be transmitted by infrared to the Testo printer. It is also possible, during cyclical printing, to print measurement data once every minute, for example.

The testo 635-1 immediately displays the dew point difference between ambient air and the wall surface, when analyzing moisture on walls and ceilings. There are precision probes up to -60°C tpd available to inspect pressure dewpoint in compressed air systems. The humidity sensor developed by Testo has proven itself world-wide and has outstanding features in terms of precision, long-term stability, temperature resistance and robustness.

Specifications:

Temperature - NTC

Measuring range

-40° to 302 °F / -40 to +150 °C

Accuracy

±0.4 °F (-13° to 166.8 °F) / ±0.2 °C (-25 to +74.9 °C)

±0.7 °F (-40° to -13.2 °F) / ±0.4 °C (-40 to -25.1 °C)

±0.7 °F (167° 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

-328.0° 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

Absolute Pressure

Measuring range

0.0 hPa to +800.0 InH₂O / 0 to 2000 hPa

Accuracy

See probe data

Resolution

0.0 InH₂O / 0.1 hPa

General technical data

Weight

15 oz. / 428 g

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