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Controls and LCD display
1
2
3
4
5
6
7
8
1 Trigger
2 Infrared sensor
3 Laser outlet
4 LCD display
5 Mode button
6 Locking latch (battery compartment)
7 Battery compartment cover
8 Battery compartment
A
B
C D E F
G
A Temperature display range
B Temperature symbol for the object
temperature
C Laser symbol
D “SCAN” measuring indicator (displayed
during measurements)
E “HOLD” display symbol (the measured
value is displayed continuously)
F Low battery indicator
G Temperature unit (this symbol displays
the measuring unit used)
Setup
a) Inserting/replacing the battery
Insert the battery before using the thermometer for the rst time. Replace the battery when
the low battery indicator [empty battery] (F) is displayed.
Press the locking latch (6) inwardly on both sides at the same time and pull the battery
compartment cover (7) downwards, in order to open the battery compartment (8).
Remove the used battery from the compartment and insert a new battery of the same type in
the correct polarity. The battery clip is designed so the battery can be only be connected in
the correct polarity. Do not use force when plugging the battery in onto the contacts.
Stow the battery in the battery compartment (8).
Close the battery compartment (8) by closing the battery compartment cover (7) using the
locking latch (6). Be careful not to pinch the cables.
b) Function
Infrared thermometers measure the surface temperature of an object. The sensor on the
product records the heat radiation emitted, reected and transmitted through the object, and
converts this information into a temperature value.
Temperature measurements on shiny or reective surfaces are imprecise. Transparent
materials cannot be measured. To measure such materials, apply a layer of opaque adhesive
paper tape to the object, allow the tape to reach the temperature of the object, and then
measure the surface temperature of the transparent object at the taped location.
Emissivity is used to describe the energy emission characteristics of a material. The higher
the emissivity, the more radiation a material can emit. Many organic materials and surfaces
have an emission level of approx. 0.95. Metallic surfaces or shiny materials have low
emissivity. This results in imprecise measuring values.
The thermometer's emissivity settings cannot be changed.
Emissivity of different surfaces
The emissivity levels listed in the following table are approximate values. Parameters
such as the shape and characteristics of the material can affect the emissivity of
an object. Measuring materials with an emissivity that is different from the preset
emissivity may lead to slightly inaccurate readings.
Surface Emissivity Surface Emissivity
Asphalt 0.90 – 0.98 Plastic 0.85 – 0.95
Varnish (matt) 0.97 Hard plaster 0.80 – 0.90
Concrete 0.94 Sand 0.90
Human skin 0.98 Glass/ceramics 0.90 – 0.95
Ice 0.96 – 0.98 Textiles 0.90
Mortar 0.89 – 0.91 Rubber (black) 0.94
Ferric oxide 0.78 – 0.82 Water 0.92 – 0.96
Paper 0.70 – 0.94 Varnish 0.80 – 0.95
Soil/humus 0.92 – 0.96 Bricks 0.93 – 0.96
c) Switching on
Press the trigger (1) to switch on the infrared thermometer.
The product must rst adjust to the ambient temperature, in order to be able to
supply precise measurement values. When using the product in a new location, wait
until it has had time to adjust to the new ambient temperature.
d) Measurement of surface temperatures
For a measurement, point the infrared sensor (2) and the laser outlet (3), preferably
perpendicular to the object to be measured. Make sure that the object to be measured is not
smaller than the product IR measuring spot (see "e) IR measuring spot size - distance-to-spot
ratio; D/S)”).
Press the trigger (1) and hold it down while it takes measurements and until the measured
value in the LCD display (4) has stabilized. "SCAN" (D) will appear on the display while the
temperature is being measured. The temperature displayed is the surface temperature of the
measured object. The symbol for the object temperature (B) is displayed.
Make sure that the lens of the infrared sensor is clean. Dust, smoke or uff on the
lens may distort the results.
The temperature display range (A) shows the measurement value in the selected unit. The
displayed measurement value corresponds to the average surface temperature of the IR-
measuring spot.
After releasing the trigger (1), the last measured value will be displayed continuously in the
display . The measurement value is frozen, in order to avoid uctuation. "HOLD" (E) will also
be displayed. The current measurement process is completed.
To locate hot or cold spots on the measured object, sweep along the object in broad strokes
back and forth or up and down whilst you pull the entire object laterally. Observe the
measurements whilst doing so. The laser beam indicates the measured area.
When you release the trigger, the thermometer turns off automatically after 10 seconds if no
other buttons are pressed.
"Hi" will be displayed if the temperature exceeds the measuring range (> 350 °C). "Lo" will be
displayed if the temperature is lower than the measuring range (<-50 °C).
Longer measurements of high temperatures, with a close measuring distance, lead
to heating of the measuring device itself and thus to inaccurate measurements.
Adhere to the following rule in order to obtain exact measuring values: The higher
the temperature the greater the measuring distance and the shorter the measuring
time.
e) IR measuring spot size - distance-to-spot ratio (D/S)
In order to obtain precise measuring results, the measured object must be larger than the IR
measuring spot. The measured temperature is calculated using the average temperature of
the measured area. The smaller the object, the closer it must be to the thermometer. It is also
indicated on the thermometer. To ensure precise measurements, the measured object should
be at least twice the size of the measuring spot.
The exact size of the IR measuring spot is shown in the following diagram.
Settings
Switch the thermometer on for setup. Press the trigger (1) to switch on.
a) Changing the temperature unit (°C / °F)
The temperature unit can be switched between °C / °F.
Press and hold the trigger (1) to measure the temperature. The temperature unit can only be
changed, if a temperature indicator is shown in the LCD display (4).
Press the MODE button (5) once to change the temperature unit (G). The temperature unit
can be switched from °C (degrees Celsius) to °F (degrees Fahrenheit) or vice versa. The
character of the measuring unit appears after every key press in the LCD display (4).
b) Switching the backlight on and off
Press and hold the Mode button for 3 seconds, to enter settings mode.
To deactivate the backlight, press down the trigger (1) several times until "0" appears in the
LCD display. The backlight is switched off.
To activate the backlight, press down the trigger (1) until "1" appears in the LCD display.
The backlight is switched on.
The backlight lights up, as soon as "1" is selected, and goes off when set to "0".
Press and hold the Mode button for 3 seconds to conrm the setting.
5

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