Bosch GIS 1000 C Professional Manual Original página 25

humidity", page 29) 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.
– Marking (p) in the red range: There is an increased risk of
mould because the humidity is too high or the surface
temperature is close to the dew point temperature. The
respective value flashes in the indicator.
A mould risk warning is given when the surface temperature
is 80 % of the dew point temperature.
Note: Mould spores cannot be detected with the measuring
tool. It only indicates that mould may form if the conditions
remain unchanged.
Contact Temperature Mode
Contact temperature measurement enables the temperature
of an object to be measured directly using a commercially
available type K shielded thermocouple.
The contact temperature measurement can be a helpful ad-
dition to the contactless temperature measurement. Use is
particularly recommended in situations in which the infrared
measurement has inherent disadvantages, e.g. when meas-
uring temperature in media, liquids, air currents or surfaces
with a low emissivity (polished metals).
There are specially optimised sensor geometries for various
applications in liquids, in air currents or on surfaces, which
allow correct measurement when using a suitable sensor.
Read and observe information from the thermocouple manu-
facturer if available.
Using a thermocouple principally requires direct contact
with the object measured. Pay attention here to potential
hazards and the safety instructions.
In this mode, only the temperature of the temperature
sensor is measured. Other parameters are excluded here.
Bosch Power Tools
Note: Use type K shielded thermocouples only. Measure-
ments may yield incorrect results if other types of thermo-
couples are connected.
Open the flap (1) and connect the thermocouple at the
connection (25).
As soon as a thermocouple is connected, the (n) indicator
appears in the display. The measured value of the indicator
is continually updated. For the measurement, the measure
key (4) must not be pressed in this mode and the lasers are
deactivated. To achieve a reliable result, wait for the meas-
ured value to stop changing. This can take several minutes
depending on the version of thermocouple.
The contact temperature can, however, also be measured in
every mode in addition to the surface temperature. Then the
measured value is displayed in another place (s). The sur-
face temperature (n) is, however, always used to determine
thermal bridges and the risk of mould.
When the thermocouple is removed, the function
indicator (s) on the display goes out. Close the flap (1) again
after removing the thermocouple.
User mode
Surface temperature, ambient temperature and relative hu-
midity are measured in user mode. The dew point temperat-
ure and the average temperature (average of the surface
temperatures during the measuring period) are calculated
from these.
You can hide the following values in the display as required:
Average temperature, relative humidity, ambient temperat-
ure and dew point temperature.
To do so, open the <Main Menu> (see "Navigating in the
<Main Menu>", page 27). Select the <User Mode> sub-
menu. You can switch the indicators for <Average Temp.>,
<Humidity>, <Room Temp.> and <Dew Point> on and off
here.
For surface temperature measurements, you can choose
whether the minimum and maximum values (j) of the result
scale (k) are adapted automatically or defined manually. Go
to the <User Mode> menu and then the <Scale Range>
submenu.
– If you want the values (j) to be determined automatically
as in surface temperature mode, select <Auto>. 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).
– If you want to define the values manually, select
<Preset>. Set the values you require in the <User
Mode> menu under <Scale Lower Limit> and <Scale
Upper Limit>. The minimum and maximum values you
have set manually will appear on the display (j). This en-
ables screenshots of different measurements to be com-
pared using the marking (p), for example.
Surface temperature alarm
The surface temperature alarm can be used in all modes ex-
cept contact temperature measurement. You can set a min-
imum and a maximum temperature.
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1 609 92A 4X3 | (21.12.2020)