Fluke TIS45-30Hz User Manual - Page 29

Background (Reflected Background Temperature Compensation), Transmission/Transmittance Adjustment

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Background (Reflected Background Temperature Compensation) Compensation for reflected background temperature is set in the Background tab. Very hot objects or very cold objects can affect the apparent temperature and measurement accuracy of the target or object of interest, especially when surface emissivity is low. Adjustment of the reflected background temperature can make the temperature measurement better in many situations. For more information, see page 18. To adjust the background temperature: 1. Go to Measurement > Background. 2. Push W/X to change the value. 3. Push  or  when done. Note If the Display is set to Display All, you see the information about current reflected background temperature as BG = xx.x. Performance Series Thermal Imagers Menus Transmission/Transmittance Adjustment (TiS45, TiS55, TiS65 only) When you do infrared inspections through infraredtransparent windows (IR windows), not all of the infrared energy emitted from the objects of interest is transmitted through the optical material in the window. If the transmission percentage of the window is known, you can adjust this percentage in the Imager or in the SmartView® software. Adjustment of the transmission correction can make the accuracy of the temperature measurement better in many situations. To adjust the transmission percentage: 1. Go to Measurement > Transmission. 2. Push W/X to adjust the percentage between 1 % and 100 %. If you set a value that is

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Performance Series Thermal Imagers
Menus
19
Background (Reflected Background
Temperature Compensation)
Compensation for reflected background temperature is set
in the Background tab. Very hot objects or very cold
objects can affect the apparent temperature and
measurement accuracy of the target or object of interest,
especially when surface emissivity is low. Adjustment of
the reflected background temperature can make the
temperature measurement better in many situations. For
more information, see page 18.
To adjust the background temperature:
1. Go to
Measurement
>
Background
.
2. Push
W
/
X
to change the value.
3. Push
or
when done.
Note
If the Display is set to
Display All
, you see the
information about current reflected background
temperature as
BG = xx.x
.
Transmission/Transmittance Adjustment
(TiS45, TiS55, TiS65 only)
When you do infrared inspections through infrared-
transparent windows (IR windows), not all of the infrared
energy emitted from the objects of interest is transmitted
through the optical material in the window. If the
transmission percentage of the window is known, you can
adjust this percentage in the Imager or in the SmartView
®
software. Adjustment of the transmission correction can
make the accuracy of the temperature measurement better
in many situations.
To adjust the transmission percentage:
1. Go to
Measurement
>
Transmission
.
2. Push
W
/
X
to adjust the percentage between 1 %
and 100 %.
If you set a value that is
<
30 %,
shows on the
Imager display with this caution:
Caution:
Transmission <30 %
(see Manual)
3. Push
to clear the message.
4. Push
or
when done.
Note
If Display Information is set to
Display All
, you
see the information about current transmission
correction as
τ
=
xx
.