Display; Emissivity - TESTO 876 Instruction Manual

6 Using the product
6.1.4.
6.1.5.
26
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Display...

Select display options
The presentation can be adapted by means of showing/hiding the
following elements: Crosshairs, temperature scale and quick select
buttons.
Hidden function keys can be shown again by pressing a quick
select button: The first press of the button shows the function keys
again. To trigger a function, the button must be pressed again.
1. [OK] | Display...
- The Display options
2. Move Joystick up/down to select the desired option.
- The selected option has an orange border ( ).
3. Activate ( ) or deactivate (
4. Confirm settings with the
or
Discard settings with [Esc].

Emissivity...

Emissivity
The emissivity describes the capability of a body to emit
electromagnetic radiation. This is material-specific and must be
adapted for correct measurement results.
Non-metals (paper, ceramic, gypsum, wood, paints and coatings),
plastics and food have high emissivity, which means that the
surface temperature can be easily measured using infrared.
Because of their low or non-uniform emissivity, bright metals and
metal oxides are only somewhat suited for infrared measurement.
You must anticipate highly inaccurate measurements. A remedy for
this is coatings that increase the emissivity, e.g. paint or emission
adhesive (art. no. 0554 0051) which must be applied to the object
being measured.
The following table gives typical emissivities of important materials.
These values can be used as orientation with the user-defined
settings.
GlobalTestSupply
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| [OK].
dialogue is opened.
) option with [OK].
[Apply] quick select button.
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