Bosch Professional GIS 1000 C Original Instructions Manual page 12

12 | English
The indicator for the current zoom level (d) is shown on the
display. To increase the zoom level, press the "Zoom in" (up)
arrow button (16); to decrease the zoom level, press the
"Zoom out" (down) arrow button (13).
Due to the parallax, the measuring frame (b) only corres-
ponds to the measuring range if the selected zoom level cor-
responds to the actual measuring distance.
Illuminating the area you are measuring
When measuring in dark areas, you can switch on the
light (24) to improve the display of the screen content. This
can help you to achieve a better result when saving screen-
shots.
Press the button (14) to switch the light (24) on or off.
To save energy, the light switches off automatically when the
brightness of the display lighting is reduced. You can change
how long the display stays lit in the <Light Duration> menu
(see "<Light Duration>", page 15). The light is not auto-
matically switched on when the display lighting is switched
back on.
For energy saving reasons, the light is not available when the
battery pack's state of charge is in the critical range.
Measuring functions
Switching Between Individual Modes
Select the required mode with the right (11) or left (15) ar-
row buttons (the mode is displayed with a short explana-
tion). To hide the explanation early, press the save
button (9). To hide the explanation and immediately start a
measurement, press the measure button (4).
Surface temperature mode
Surface temperature mode is used to measure the surface
temperature of objects.
In this mode, you can, for example, check radiators or look
for overheated machine parts.
You start the measurement by pressing the measure
button (4). The measured values shown on the display are
continuously being updated. As soon as you let go of the
measure button (4), the measurement is interrupted and the
lasers are switched off. On the display, the last measure-
ment results are fixed on the (n) indicator. The last meas-
ured surface temperature is displayed with the marking (p)
on the result scale (k).
Once the difference between the measurements taken is
more than 3 °C, the minimum and maximum temperatures
measured during the process will appear on the display (j).
This enables you to tell how high the current measured value
is in relation to the temperatures already measured.
Thermal bridge mode
The measuring tool can support you in detecting thermal
bridges (see "Thermal bridge", page 16).
Before measurement can be started, the external temperat-
ure must first be set. To do so, open the <Main Menu> (see
"Navigating in the <Main Menu>", page 14). Select
the <Thermal Bridge> submenu and set the current ex-
1 609 92A 62P | (14.10.2020)
ternal temperature. You start the measurement by pressing
the measure button (4).
Taking into account the internal ambient temperature and
the external temperature, you can determine whether the
surface temperature meets the minimum requirements of
the heat shield. If the surface temperature falls below the
minimum requirements, a structural defect is assumed and a
thermal bridge warning given.
Once the measurement has been taken, the surface temper-
ature of the object you last measured is fixed on the
display (n), as is the ambient temperature (h). The calcu-
lated f value (see "Thermal bridge", page 16) and its es-
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timated tolerance are shown on the display (v).
The measuring tool displays the interpretation of the values
with the marking (p) on the result scale (k):
– Marking (p) in the green range (f
ing tolerance): No thermal bridge
– Marking (p) in the yellow range (borderline f
0.7): A thermal bridge may be in the measuring range.
Measurement should be repeated under favourable envir-
onmental conditions (e.g. at a lower external temperat-
ure).
– Marking (p) in the red range (f
ing tolerance): A thermal bridge is probably in the meas-
uring range.
Dew point mode
The measuring tool can support you in detecting places at
risk of damage from mould.
The dew point temperature (see "Dew point temperature",
page 17) is calculated from the additionally measured am-
bient temperature and relative air humidity (see "Relative
humidity", page 17) in this mode. The dew point temperat-
ure is compared here with the measured surface temperat-
ure and interpreted in terms of the risk of mould formation.
Note that the measuring results always represent only a
snapshot based on the current environmental conditions. A
forecast for possibly changing environmental conditions
cannot be made. If the measurement yields critical results,
you should repeat the measurement at different times and
under different conditions.
You start the measurement by pressing the measure
button (4). The measured values shown on the display are
continuously being updated.
Once the measurement has been taken, the surface temper-
ature of the object you last measured is fixed on the
display (n), as are the ambient temperature (h) and the rel-
ative humidity (g). The calculated dew point temperature is
displayed in (i).
The measuring tool automatically helps in the interpretation
of the values with the marking (p) on the result scale (k):
– Marking (p) in the green range: There is no risk of mould
under the current conditions.
– Marking (p) in the yellow range: The values are border-
line; pay attention to the room temperature, thermal
bridges and humidity, and repeat the measurement later
if necessary.
value over 0.7, includ-
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value of
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value under 0.7, includ-
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