testo 635-1 - Humidity measuring instrument
ORDER ME IN
Order Me In, once ordered this item will likely dispatch before the 31st of July 2025, call 1300 737 871 (NZ 0800 737 871) to confirm.
The testo 635-1 temperature and humidity measuring instrument enables you to measure the temperature, air humidity, and dew point - in compressed air as well. Requires a sensor to use.
Regular price
$779.00 AUD
+ GST
$856.90 AUD Inc. GST
$856.90 AUD Inc. GST




Choose from the related accessories tabs compatible sensors for use. Each sold separately.
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 (-13.0 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 InH?O / 0 to 2000 hPa
- Accuracy: See probe data
- Resolution: 0.1 InH?O / 0.1 hPa
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