- LAL
To set the min temperature alarm, press the up and down menu.
- Alarm when temperature is too high or too low. T
This device can alarm when the temperature is too high or too
low. It can release a sound to advice users.
Alarm temperature can be set through the "MODE" menu.
The selected value remains set until the power is on, when
power is turned off the setting is cancelled.
temperature meaSuring unit
°F or °C can be set by the temperature unit switch menu, press
the "MODE" menu for 2 sec.
over range alarm function
If the temperature is beyond the measurement range, the screen
will display "----"
battery replacement
When the display shows the low power signal "lOg", please
replace the battery (9V).
The battery is under the trigger.
Do not discard the used battery into the dustbin.
attention
The object to be measured must be larger than the visual field
of the instrument.
10
Keep the object surface clean and free from frost, oil and dirt etc
when measuring.
If the object to be measured is easy to reflect, it's better to cover
it with adhesive tape or black paint before measuring.
If the object to be measured is transparent such as glass the
result could be not accurate.
Steam, dust, smog etc will influence the measuring result.
This instrument can adjust the environment temperature devia-
tion. But if the deviation is huge it may take about 30 minutes
to adjust.
To find a hot spot please point the laser to the object from top to
bottom from left to right until find out it.
Distance Coefficient Ratio
The distance coefficient ratio of this product is 12:1.
For example, if the object to be measured is 72cm far from the
instrument, then the diameter of the object must be bigger than
6cm.
It can measure from a large distance, but the result may be af-
fected by other light sources.
emiSSivity anD infrareD
temperature meaSurement – principle
Infrared thermometer is an instrument that measures the sur-
face temperature.
The measurement is done through the emission of infrared rays,
and their reflection is converted into energy.