Bosch UniversalTemp Original Instructions Manual page 24

24 | English
Adjusting the emissivity
To determine the surface temperature, the tool performs a contactless measurement of
the natural infrared thermal radiation emitted by the object at which the tool is aimed.
For optimum measuring results, the emissivity setting (see "Emissivity", page 27) on
the measuring tool must be checked before every measurement and adapted to the ob-
ject being measured if necessary.
When the measuring tool is switched on, the high emissivity setting is activated by de-
fault. If the emissivity is changed, the last measured value appears in the display (f), and
the display (e) goes out.
You can select from three different emissivity settings on the measuring tool. The follow-
ing overview shows commonly used materials of a similar emissivity for each emissivity
setting; note that these are examples and not an exhaustive list. Because the emissivity
of a material is dependent on a variety of factors and is therefore variable, the details in
the following overview serve only as guide values.
High emissivity: Concrete (dry), brickwork (red, rough), sand-
stone (rough), marble, PVC flooring, plastic (PE, PP, PVC), rub-
ber, anodised aluminium (matt), woodchip wallpaper, carpet,
laminate, tiling (matt), parquet flooring (matt), paint (black,
matt), radiator paint, wood, glass
Medium emissivity: Enamel, granite, cast iron, sand, fireclay
Low emissivity: Cork, porcelain (white), paint (slightly reflect-
ive)
The following emissivity gradings are used:
– High emissivity grading: Approx. 0.95
– Medium emissivity grading: Approx. 0.85
– Low emissivity grading: Approx. 0.75
To change the emissivity setting, press the button Mode (8) repeatedly until the emissiv-
ity indicator (d) shows the required emissivity for the next measurement.
Temperature measurements will only be correct if the emissivity setting
u
matches the emissivity of the object. Otherwise, object temperatures could be
shown to be hotter or colder than they are, which may present a danger if touched.
1 609 92A 7MA | (10.06.2022) Bosch Power Tools