HT3305
EN - 7
5. OPERATING INSTRUCTIONS
5.1.
IR TEMPERATURE MEASUREMENT
1. Switch on the instrument by pressing trigger key
T
2. Press
/
key to activate/deactivate the double laser pointer (see § 4.3.2)
3. Press
MODE
key to set the unit, activate/deactivate the alarm thresholds and the
correct Emissivity value depending on the material (see § 4.3.4)
4. Press and hold Trigger key
T
to activate the test and point the instrument in the
direction of the target ‘s surface
CAUTION
The area laser beam allows an immediate evaluation of the maximum size of
the measuring spot with regard to the distance from the target in order to get a
correct temperature measurement.
5. Make sure that the target, whose temperature is to be measured, is at least as large as
the unit’s spot (see Fig. 4). The smaller the object is, the closer you should be to it
(Example: if the distance from the object is 240mm – 9.4inch, the section of the object
should be at least of 12mm – 0.5inch for a correct temperature measurement).
When
accuracy is critical, make sure the object is at least twice as large as the spot
size
Fig. 4: Distance / Spot ratio of the instrument
6. Release Trigger key
T
to stop measuring and freeze the last read value on the main
display. The message “HOLD” is shown. The MAX, MIN, AVG or DIF values is also
shown on the secondary display by pressing
MODE
key
7. The instrument will automatically switch off after 10 seconds of idleness.
