MICRO-EPSILON TIM 160 Dokumentacja Pobierz pdf (Strona 68)

Emissivity

12.2

thermoIMAGER TIM 68

Determination of Unknown Emissivities

►First, determine the actual temperature of the measuring object with a thermocouple or contact sensor.

Second, measure the temperature with the infrared thermometer and modify the emissivity until the

displayed result corresponds to the actual temperature.

►If you monitor temperatures of up to 380 °C you may place a special plastic sticker (emissivity dots – part

number: TM-ED-CT) onto the measuring object, which covers it completely.

Fig. 12.2 Emissivity dots on a metal drum

Now set the emissivity to 0.95 and take the temperature of the sticker. Afterwards, determine the

temperature of the adjacent area on the measuring object and adjust the emissivity according to the value

of the temperature of the sticker.

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MICRO-EPSILON TIM 160 Dokumentacja Strona 68