Product Description; Function; Ir-Measuring Optics - D:s Ratio - VOLTCRAFT IR-1600 CAM 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 optics - D:S ratio
(D:S = measuring distance:measuring area)
To achieve precise measuring results, the measured object must be larger than the IR measuring spot of the infra-
red 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 can
be taken from the following chart. It is also printed on the device. For precise measurements, the measuring object
should be at least twice as large as the measuring spot.
The meter has a lens of 50:1. The smallest measuring diameter is reached before the measuring opening at a distance
of up to 90 cm. It is 18 mm in diameter. Keep sufficient distance to avoid incorrect measurement due to heating of the
IR thermometer. Then the measuring cone expands as shown in the sketch.
Example: The measuring diameter at a distance of 1.8 m is 36 mm.
IR measuring area
Laser
35