InfraTec VarioCAM User Manual page 57

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User Manual for the Thermographic System VarioCAM

9 Operation

Menu items

"Emissivity..", "Env.temp..", "Path temperature..", "Transmissivity..", "Distance.."

Parameters Emissivity and Environmental temperature as well as Path temperature, Transmissivity and

Distance provide for precise temperature measurement, taking into account real measuring conditions,

especially:

■

the surface properties of the object to be measured and the ambient temperature level

■

the transmissivity of the optical channel, the path temperature and distance.

Correct input of the respective correction parameters requires exact knowledge of the real properties of

the object to be measured as well as of ambient conditions and of the measurement setup. The correction

parameters are adopted for the entire image.

The five menu items "Emissivity..", "Env.temp..", "Path temperature..", "Transmissivity.." and

"Distance.." can be used to set the respective parameters for the current scene. When selecting a menu

item, an appropriate dialogue will open to allow to enter the desired value. By means of the buttons, the

value can then be altered. Pressing Enter accepts the value. These values are saved with each thermal

image and can be displayed and, if necessary, changed when later processing the thermograms by

means of the analysis software IRBIS

Fig. 95

Menu "Measure" - "Emissivity.."

The standard setting of Emissivity is 1.00. This assumes that 100% of the radiation measured is irradiated

by the measured object itself. The measured object represents the "ideal black body radiator" and does not

reflect.

Fig. 97

Menu "Measure" - "Env.temp.."

User Manual

hr head

Fig. 96

Fig. 98

Dialogue "Emissivity"

Dialogue "Env.temp."

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