Measuring Functions - Bosch GIS 1000 C Professional Manual Original

26 | English
Measuring Surface for Surface-temperature
Measurements
The laser points generated by the measuring tool indicate the
left-hand and right-hand boundaries of the circular measuring
surface. The infrared radiation of this measuring surface is de-
termined when performing contactless surface temperature
measurement.
To achieve an optimum measuring result, align the measuring
tool as perpendicular as possible to the centre of the measur-
ing surface.
 Do not point the laser beam at persons or animals and
do not look into the laser beam yourself, not even from
a large distance.
Increasing the distance between measuring tool and measur-
ing object will increase the distance of the laser points and
therefore the size of the measuring surface accordingly (see
"Technical Data", page 22). The optimum measuring distance
is 0.8 m.
 Do not hold the measuring tool directly against hot sur-
faces. The measuring tool can be damaged through heat.
If the laser points are difficult to see, you can switch on the
Measuring Frame b on the display (see "Measuring Frame",
page 30). The measuring frame can be used as an indicator
for the measuring surface and helps to improve orientation.
Depending on the measuring distance, the measuring frame
may deviate from the measuring surface. The area located be-
tween the laser points is decisive for the measurement.
Notes on the Measuring Conditions
Highly reflective or shiny surfaces (e.g. shiny tiles or polished
metals) may impair the surface temperature measurement. If
necessary, mask the measuring surface with a dark, matt ad-
hesive tape that conducts heat well. Allow the tape to acclima-
tise briefly on the surface.
Ensure that a favourable measuring angle is used on reflective
surfaces, in order to ensure that reflected heat radiation from
other objects does not distort the result. For example, the re-
flection of your body heat may interfere with the measure-
ment when measuring head-on from a perpendicular position.
Measuring through transparent materials (e.g. glass or trans-
parent plastics) is principally not possible.
The accuracy and reliability of the measuring results increase
with better and more stable measuring conditions.
The humidity and ambient temperature sensor 5 can be dam-
aged by chemical contaminants, such as through the evapora-
tion of paints or enamels. Infrared temperature measurement
is impaired by smoke, vapour or dusty air.
For this reason, ventilate indoor areas prior to measurement,
especially when the air is contaminated or steamy.
After ventilating, allow the room to acclimatize for a while until
the usual temperature has been reached again.
Ambient temperature and relative humidity are measured di-
rectly on the measuring tool using the humidity and ambient
temperature sensor 5. To achieve substantial results, do not
hold the measuring tool directly over or next to sources of in-
terference such as radiators or open liquids. Do not under any
circumstances cover off the sensor 5.
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Measuring Functions

Standard display screen
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a Date/time: see "Time/Date", page 30
b Measuring frame: see "Measuring Surface for Surface-tem-
perature Measurements", page 26
c Status indicator:
Measuring tool is ready to measure; press the
measure button 4.
(Continuous) measurement running; lasers are
switched on.
Measurement ended; lasers are switched off;
measuring results are fixed.
d Audio signal switched off indicator (see "Audio Signal",
page 30)
e Zoom level indicator: see "Setting the Zoom Level",
page 25
f Bluetooth® switched on indicator (see "Data Transmission
via Bluetooth®", page 29)
g Battery status indicator: see "Battery Status Indicator",
page 24
h Function indicator/Measured value for relative humidity
i Function indicator/Measured value for ambient tempera-
ture
j Function indicator/Result for dew point temperature
k Minimum/maximum measured value for surface tempera-
ture during a measurement
l Result scale
m Menu symbol
n Surface temperature alarm indicator: see "Surface Tem-
perature Alarm", page 27
o Measured value for surface temperature measurement
p Current mode
q Mark for measured value or result (depending on selected
mode)
r Gallery symbol
s Function indicator/Measured value for average tempera-
ture
t Function indicator/Measured value for contact tempera-
ture
u Emissivity degree indicator
v Memory symbol
b c d e f g
o n m
Bosch Power Tools
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