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