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Operation manual
Infrared-thermometer IR 8895
5.6
Background illumination
For measurements in low light conditions or night darkness, the background light can be activated with the key [B].
5.7
Emission setting
The emission factor describes the characteristics of energy radiation of a certain material. To be more exact, it is defined as the ratio of
energy level from the measured object at a given temperature to the energy that would be emitted by a black body (ideal emitter) at that
temperature. Higher is this factor, higher is the ability of the material to emit out radiation. An ideal black body has an emission factor of 1.
Most organic surfaces and materials have the emission factor of approximately 0.95. Metallic materials or glossy sur-
faces have a clearly lower emission value, for which you must be very careful while using the infrared thermometer 8895.
Metallic, glossy surfaces can be measured only with a compromised measuring accuracy. In order to achieve the maximum measuring
accuracy for reflective surfaces, we compulsorily recommend application of black matt finish paint or black adhesive film.
The device can not measure through transparent surfaces like, for example, glass or transparent film. Instead, the surface temperature
of the glass or the transparent film gets measured.
For entering the respective emission factor, the device is to be first activated by pressing the trigger. Now press the Mode/Save-key [C].
The emission symbol [6] begins to blink. Then, enter the desired emission value with the help of the key [A] for reducing the value and
key [B] for increasing the value. After adjusting the desired value, it is to be stored by further confirming with the Mode/Save-key [C]. The
instrument is now ready for temperature measurements with the entered emission-factor.
KEY
MODE
A list with the emission values of most frequently measured materials is available in the appendix „Emission value table".
6
Maintenance and cleaning
6.1
Cleaning
For cleaning the infrared lens, simply blow out with your mouth to remove the dust particles. The remaining dust should be preferably
cleaned with a lens brush. The surface of the device can be cleaned with a slightly wet cloth. Please use only water and no chemicals or
detergents for this purpose.
Technical changes reserved
0141 0316-190 30.11.2021
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B+B Thermo-Technik GmbH | Heinrich-Hertz-Straße 4 | D-78166 Donaueschingen
Fon +49 771 83160 | Fax +49 771 8316-50 | info@bb-sensors.com | bb-sensors.com
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