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Use this method to select the tolerance range indicated below the display:
Normal
Note: Under "Normal" mode, the tolerance range for temperature deviation
function is turned-off. So, no display color change / acoustic signal will be
observed for any amount of temperature deviation from reference value under
"Normal" mode.
Scan temperature deviation
S elect a reference temperature as described above.
P ress the Measure button
the area you wish to measure. The temperature is indicated in the display
H old the measure button whilst scanning, and slowly and steadily move the
laser pointer with 8 dot circle across the surface you wish to measure. The
temperature deviations between the reference value and the measurement
are indicated as follows:
Visual
indication
Red display
background
Green display
background
Blue display
background
Example of use
To e.g. test cold air entering the space between a window frame and brickwork,
first scan the temperature along the entire frame, next to the closed window. Select
the warmest area of the frame as the reference temperature, then e.g. a temperature
variation of 3 °C / 5°F.
0.5 °C
1°F
and aim the laser pointer with 8 dot circle
3
Acoustic
indication
Rapid tone series The upper temperature threshold has
No tone
Slow tone series
3 °C
5°F
Cause
been exceeded
Within the temperature range setting
The value is below the lower threshold
5.5 °C
10°F
at
1
.
5
GB/IE
27
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