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 |
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Measuring range
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-40° to 302 °F / -40 to +150 °C
|
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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
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| Temperature - Type K TC |
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Measuring range
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-328.0° to 2498 °F / -200 to +1370 °C
|
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Accuracy
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±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)
|
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Resolution
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0.1 °F / 0.1 °C
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| Humidity - Capacitive |
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Measuring range
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0 to +100 %rH
|
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Accuracy
|
See probe data
|
|
Resolution
|
0.1 %rH
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| Absolute Pressure |
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Measuring range
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0.0 hPa to +800.0 InH₂O / 0 to 2000 hPa
|
|
Accuracy
|
See probe data
|
|
Resolution
|
0.0 InH₂O / 0.1 hPa
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| General technical data |
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Weight
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15 oz. / 428 g
|
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Dimensions
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9 x 3 x 2 in. / 220 x 74 x 46 mm
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Operating temperature
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-4° to 122 °F / -20 to +50 °C
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Housing
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ABS / TPE / Metal
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Battery type
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Alkaline, type AA
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Battery life
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200 h
|
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Storage temperature
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-22° to 158 °F / -30 to +70 °C
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