General Operation - Velleman DEM104 Mode D'emploi

7. Operation
7.1

General Operation

1. Shortly press the on-off button to switch on the meter.
2. Aim the IR sensor towards the object to be measured.
3. Hold the on-off button pressed. The temperature will be
displayed on the LCD display.
4. Release the on-off button to freeze the reading.
5. The meter will automatically switch off after 15 seconds of
inactivity.
Remarks: The temperature
 of a shiny or polished metal surface
 through a transparent surface such as glass
 of an object covered with frost, grime, oil
cannot be measured.
7.2 °C or °F Selection
1. Open the battery compartment using an appropriate
screwdriver. Remove the clip.
2. Shortly press the °C/°F button to change the measurement unit.
3. Close the battery compartment.
8. Cleaning and Maintenance
 Wipe the device regularly with a moist, lint-free cloth. Do not use
alcohol or solvents. DO NOT submerge the device in any liquid.
 Store the meter in a dry place away from humidity and vibrations.
 Remove the batteries when the meter is to be stored for long
periods of time.
9. Technical Specifications
measurement range
target ratio
emissivity
operating temperature
storage temperature
accuracy
resolution
response time
V. 01 – 07/05/2015
DEM104
-50° C to 260° C (-58° F to 500° F)
1:1
0.95 fixed
0 ~ 50° C (32 ~ 122° F)
-20° C to 60° C (-4° F to 140° F)
± 2 % ± 2° C / 4° F
0.1° C / 0.1° F
< 500 ms
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