Measuring Functions - Bosch GTC 400 C Operating/Safety Instructions Manual

Adjusting the color display
Depending on the measurement conditions,
different color palettes can make it easier to
analyze the thermal image and show objects or
circumstances more clearly in the display. This
does not affect the measured temperatures.
Only the way in which the temperature values
are shown changes.
To change the color palette, remain in
measuring mode and press the right-hand 8 or
left-hand 12 arrow button.
Superimposition of thermal image
and real image
For improved orientation (= local assignment
of the thermal image displayed), with matched
temperature ranges, a visual real image can
additionally be inserted.
Note: The superimposition of the real image
and thermal image is accurate at a distance
of 1.08 ft (0.55 m). If the tool is closer to or
further away from the object being measured,
this may result in misalignment of the real
image and thermal image.
The thermal imaging camera offers you the
following options:
– Complete infrared image
Only the thermal image is displayed.
– Image in image
The thermal image displayed is cropped
and the surrounding area is shown as a
real image. This setting improves the local
assignment of the measurement range.
– Transparency
The thermal image displayed is placed on
top of the real image in such a way that it is
slightly transparent. This enables improved
detection of objects.
You can adjust the setting by pressing the up 5
or down 10 arrow buttons.
Fixing the scale
The color distribution in the thermal image
is adjusted automatically but can be fixed
by pressing the right-hand function button
Functions
7. This enables a comparison to be made
between thermal images taken under different
temperature conditions (e.g. when checking
several rooms for thermal bridges).
To switch the scale back to automatic, press
the right-hand function button 7 again.
The temperatures are now dynamic again
and adapt to the measured minimum and
maximum values.

Measuring functions

To call up further functions which may be
helpful for the display, press the "Func" button
6. Use the right-hand/left-hand buttons to
navigate through the displayed options to
select a function. Select a function and press
the "Func" button 6 again.
The following measuring functions are
available:
– "Automatic"
Colors are distributed automatically in the
thermal image
– "Heat detector"
Only the warmer temperatures in the
measurement range are displayed as a
thermal image in this measuring function.
The area outside these warmer temperatures
is displayed in greyscale as a real image so that
colored objects are not wrongly associated
with temperatures (e.g. red cable in the
control cabinet when looking for overheated
components). Adjust the scale using the up 5
and down 10 buttons. This expands or reduces
the temperature range shown.
The tool continues to measure minimum and
maximum temperatures and displays these
at the ends of the scale. You can, however,
control which temperature range is shown in
color as a thermal image.
– "Cold detector"
Only the colder temperatures in the
measurement range are displayed as a
thermal image in this measuring function.
The area outside these colder temperatures
is displayed in greyscale as a real image
so that colored objects are not wrongly
associated with temperatures (e.g. blue
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