Product Description; A) Function; B) Ir Measuring Lens - Ratio Measuring Distance - Measuring Surface - VOLTCRAFT IRU 500-12 Bedienungsanleitung

7. Product Description

a) Function

Infrared thermometers (IR-thermometers) measure the surface temperature of an object. The product sensor records
the emitted, reflected and passed-through heat radiation of the object and converts this information into a temperature
value.
The degree of emission is a value used to describe the energy emission characteristic of a material. The higher this
value, the higher the material's ability to emit radiation. Many organic materials and surfaces have an emission de-
gree of approx. 0.95. Metal surfaces or glossy materials have a lower emission degree. This will cause an inaccurate
measurement. For this reason, a matte-black coat of paint or matte adhesive tape should be applied or the emission
degree pre-set accordingly.

b) IR measuring lens - ratio measuring distance - measuring surface

(D:S = measuring distance:measuring area)
To achieve precise measuring results, the measured object must be larger than the IR measuring spot of the infrared
thermometer. The determined temperature is the average temperature of the measured surface. The smaller the
measured object, the shorter the distance to the infrared thermometer has to be. The precise measuring spot size is
visually displayed by the integrated and activated circle target laser. For precise measurements, the measuring object
should be at least twice as large as the displayed measuring spot. The laser circle matches the IR measuring spot
precisely from 22 to 200 cm distance. There may be a deviation outside of this distance range.
The meter has a lens with a ratio of 12:1. The smallest measuring diameter is reached before the measuring opening
at approx. 22 cm. It is 22 mm in diameter. Keep sufficient distance to avoid incorrect measurement due to heating of
the IR thermometer.
Example: The measuring diameter at a distance of 45 cm is 40 mm. The individual target laser is precisely at the
centre of the laser circle for this. The corresponding values can be read at the lateral scale.
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