Measuring Functions - Bosch PTD 1 Original Instructions Manual

OBJ_DOKU-31220-002.fm Page 15 Friday, April 11, 2014 10:35 AM

Measuring Functions

Single Measurement
Briefly pressing the measuring button 4 once switches the la-
ser on and actuates a single measurement in the selected
mode.The measuring procedure can take 1 to 2 seconds and
is indicated through rotating display segments in line l.
The laser beam is switched off automatically upon completion
of the measurement.
The last measuring results are indicated on the display; the
"HOLD" m indicator flashes additionally. The signal LED re-
mains unchanged for the last indication.
Continuous Measurement (Tracking)
For continuous measurements, press and hold measuring
button 4 in the selected mode. The laser remains switched
on. Moving slowly, point the laser circle at all surfaces requir-
ing temperature measurement, one after the other. For hu-
midity and ambient-temperature measurements, slowly
move the measuring tool around in the room.
The display indication as well as the signal LED 8 are continu-
ously updated. As soon as releasing the measuring button 4,
the measurement is interrupted and the laser is switched off.
The last measuring results are indicated on the display; the
"HOLD" m indicator flashes additionally. The signal LED re-
mains unchanged for the last indication.
Surface-temperature-mode (see figure A)
In surface-temperature-mode, the surface temperature of an
object is measured.
To switch to surface-temperature-
mode, press the surface-tempera-
ture-mode button 11. The surface-
temperature-mode indicator k
appears on the display for confir-
mation.
Press measuring button 4 and point the laser circle perpen-
dicularly against the centre of the object being measured. Up-
on completion of the measurement, the measured surface
temperature is displayed in line l.
In surface-temperature-mode, the signal LED 8 does not light
up.
This mode, as an example, is suitable for measuring the tem-
perature of radiators, underfloor heating systems or refriger-
ator interiors.
Thermal-bridge-mode (see figure B)
In thermal-bridge-mode, surface and ambient temperature
are measured and compared with each other. In case of larger
differences between both temperatures, a thermal-bridge
warning is indicated (see "Thermal Bridge", page 16).
To switch to thermal-bridge-
mode, press the thermal-bridge-
mode button 10. The thermal-
bridge-mode indicator j appears
on the display for confirmation.
Bosch Power Tools
Press measuring button 4 and point the laser circle perpen-
dicularly against the centre of the object being measured. Up-
on completion of the measurement, the measured surface
temperature is displayed in line l and the measured ambient
temperature in line a.
The measuring tool automatically compares the values and in-
terprets the results as follows:
– Green signal LED 8: Low temperature difference, no ther-
mal bridges given.
– Yellow signal LED 8: Temperature difference in limit
range; thermal bridge possible in the measuring range; re-
peat the measurement at a later point of time.
– Red signal LED 8: The flashing symbol for surface tem-
perature h indicates that the surface temperature within
the measuring surface significantly deviates from the am-
bient temperature. A thermal bridge is in the measuring
range, which indicates poor insulation.
When the ambient temperature is low, the symbol for am-
bient temperature e additionally flashes. The room is too
cold – when being normally heated, the low temperature
indicates an overall poor insulation.
In case of thermal bridges, check the insulation in this area,
perhaps with the support of a building expert.
Mould-warning-mode (see figure C)
In mould-warning-mode, the ambient temperature and the
relative humidity (see "Relative Humidity", page 16) are
measured. The dew point temperature is calculated based on
both values (see "Dew Point Temperature", page 16). In addi-
tion, the surface temperature is also measured.
The dew point temperature is compared with the surface tem-
perature and the result is interpreted as to the risk of mould.
To switch to mould-warning-
mode, press the mould-warning-
mode button 12. The mould-warn-
ing-mode indicator i appears on
the display for confirmation.
Press measuring button 4 and point the laser circle perpen-
dicularly against the centre of the object being measured. Up-
on completion of the measurement, the measured relative hu-
midity is displayed in line b, the measured ambient
temperature in line a, the calculated dew point temperature in
line c and the measured surface temperature in line l.
The measuring tool automatically compares the values and in-
terprets the results as follows:
– Green signal LED 8: No risk of mould under the current
conditions.
– Yellow signal LED 8: The values are in the limit range; pay
attention to room temperature, humidity and heat bridges,
and repeat the measurement at a later point of time as re-
quired.
– Red signal LED 8: There is an increased mould risk be-
cause the humidity is too high or the surface temperature
is close to the dew point temperature.
The flashing Symbol for relative humidity d indicates
that the humidity in the room is too high;
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