The Testo
635
Testo 635 is an easy-to-use measuring
instrument for simultaneous
and accurate measurements of air
humidity and temperature
The ceramic humidity sensor developed
by Testo measures relative humidity from
the range 0 to 100%. It is very rugged,
stable and operates over a wide temperature
range.
Dew point is calculated and displayed
at the touch of a button.
Applications: Accurate measurement
of humidity and temperature for service,
commissioning and maintenance duties.
-
Clean rooms
-
Climatic controlled buildings
-
Computer rooms
-
Greenhouses
-
Warehouses, grain stores, production areas
Features:
-
Patented Testo® humidity
sensor
-
2 year warranty.
-
Long term stability.
-
Humidity sensor not affected by water
-
Low battery warning
-
Auto off
-
Hold/max/min
-
Dewpoint
-
Easily calibrated
-
Wide selection of RH and temperature probes
for a variety of applications
| Technical
Data: |
| Measuring range |
| Combined probe: |
0 to 100% RH
-20 to + 140°C (-4 to +284°F)
-50 to +100°C td (dew point) (-58
to +212°F) |
| Temperature probe: |
-50 to +1000°C (NiCr-Ni)
(-58 to +1850°F) |
| Accuracy of instrument: |
± 1 digit |
| Temperature: |
± 1°C(1°F)
±0.5% of m.v.
(-40 to + 900°C/ -40to +1700°F)
± 2°C(2°F) ±
1% of m.v.
(remaining range) |
| Humidity: |
See probes |
| Resolution: |
0.1% RH
0.1°C/0.1°F (to +200°C/
+392°F)
1°C/1°F (from +200°C/+392°F) |
| Ambient temperature: |
0 to +50°C (32 to
+122°F) |
| Storage/transport temperature: |
-20 to +70°C (-4 to
+158°F) |
| Battery lifetime: |
Approx. 100 h |
| Dimensions: |
190x57x42 mm 7.5"x2.5"x2" |
| Warranty: |
Instrument: 2 years
Probe: 1 year |
Accesories: The Testo TopSafe,
protects the thermometer against dirt, dust and shock.
