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3 USING THE INSTRUMENT (continued)
8
The %RH is shown on the scale below the arrow. In the example
below %RH = 58.
%
To find dewpoint, note the wet bulb temperature (e.g. 20). Find this
figure on the dry bulb scale. Dewpoint is the equivalent value on the
wet bulb scale. In this example, dewpoint = 15.
4 TECHNICAL SPECIFICATION
Thermometers
%RH
(in range 10% to 100%)
Dewpoint Temperature
Note: Factors such as barometric pressure may affect these values slightly.
For dry bulb temperatures above 70°F (21°C), use the high range
scale on the sleeve-handle. If the dry bulb temperature is below 70°F
(21°C), use the low range scale.
www.elcometer.com
WET
15
20
DRY
20
RH
Accuracy
(±5.5°F)
20
25
30
40
50
Operating Temperature
±5%
±3°C
30
%RH
60
-5°C to +50°C
(+30°F to +110°F)
0°C to +38°C
(+32°F to +100°F)
0°C to +30°C
(+32°F to +86°F)
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