Bartec R3 Series Operating Instructions Manual page 75

Transmission factor
The transmission factor specifies the percentage of radiation that passes an
additional protective window.
If you do not have the details of the transmission factor for the protective
window used, you can work it out yourself.
Determining the transmission factor

Measure the temperature of the measurement object with the
sensing head, without using the protective window. When you do
this, make sure that the correct emission factor is set.

In the configuration, enter 1.000 as the transmission factor (see
page 35 Transmission factor).

Use the protective window.

Change the transmission factor in the configuration and repeat the
measurement. Compare the measured temperature with the
temperature that was measured without the protective window.

Keep repeating this process until the temperature displayed is the
same as that for the measurement without the protective window.
Operating Instructions Radiation sensors R3XX
Annex
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