Operation; Mode Of Operation - VOLTCRAFT IR-2200-50D USB Bedienungsanleitung

9.

OPERATION

Mode of operation

Infrared thermometers measure the surface temperature of an object. The sensor of the device
measures the heat radiation emitted, reflected and transmitted by the object and calculates a
temperature value.
The emission level is a value used to describe the energy radiation characteristics of a material. The
higher the value, the more capable the material is of emitting radiation. Many organic materials
and surfaces have an emissivity of approx. 0.95. Metallic surfaces or shiny materials have a lower
emissivity; therefore measuring results are inaccurate. For this reason, emissivity can be adjusted.
Measurement
1. Point the measurement aperture at the test object in as vertical a position as possible. Make sure
that the object to be measured is not smaller than the IR measurement spot of the device (also
see measuring spot size).
2. Press and hold down the measuring button. The measured value is displayed. The displayed value
represents the average surface temperature of the IR measuring spot. During the measurement,
"SCAN" is displayed.
3. When the measuring button is released, the last measured value is displayed for about another 7
seconds so that it can be read more comfortably. "HOLD" is displayed as well.
4. The device automatically shuts down 7 seconds after the measuring button has been released.
5. If the temperature measuring range is exceeded, "——" is displayed.
In order to determine the hottest spot of the test object, hold down the measuring button
and scan the object to be measured in a zigzag movement until you have found the
hottest spot. The highest temperature measured will be displayed in the top of the
display as maximum temperature if the max temperature function is activated.
For accurate measuring results, the infrared thermometer must have adapted to ambient
temperature. Always allow the device to reach ambient temperature when it is taken to
a new location.
Shiny surfaces lead to false results. For compensation, shiny surfaces can be covered
with adhesive tape or matte black paint. The device is not able to take measurements
through transparent surfaces such as glass. It measures the surface temperature of
the glass.
Extended measurements of high temperatures at short distances will heat up the
measuring device and consequently result in faulty measurements. For accurate
results, the following rule of thumb applies: The higher the temperature, the higher the
measuring distance and the shorter the measurement duration should be.
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