Ambient Temperature; Reflection Temperature - Voltcraft 2890410 Bedienungsanleitung

13.2.1 Ambient temperature

13.2.2 Reflection temperature

Objects reflect infrared energy coming from surrounding objects. Reflected energy is added to the energy of the ob-
ject itself, potentially causing measurement errors. Results are more likely to be affected with objects that have low
emissivity.
In most applications (especially objects with high emissivity), the reflected temperature will reach an equilibrium with
the ambient temperature. This has a minimal effect on temperature measurements.
In environments with higher temperature sources close to the object being measured, it is necessary to compensate
for reflected energy by setting a temperature value for the environmental heat source.
■
Deviations from the default temperature setting can
affect the accuracy of readings.
■
Adjust the settings to match the ambient temperat-
ure.
1. Set the emissivity to 1.00. See section:
[} 55].
2. Point the lens 180° away from object to be meas-
ured.
3. Take a measurement and then press the trigger to
hold (freeze) the image.
4. Determine the average value of the image.
à
Average value: take multiple readings and divide
by number of readings taken.
5. Input the value via the onscreen settings.
à
This setting will be factored in to create a temperat-
ure reading adjustment to account for reflected en-
ergy.
Emissivity
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