Manual Bosch PTD 1 (page 14 of 87) (English, German, Dutch, Danish, French, Italian, Portuguese, Spanish, Norwegian)

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14 | English

2 609 140 909 | (5.7.12) Bosch Power Tools

The accuracy and reliability of the measuring results increase

with better and more stable measuring conditions.

The humidity and temperature sensor 1 can become dam-

aged through chemical contaminants, such as through the

evaporation of paints or enamels. The infrared temperature

measurement is affected through smoke, steam or dusty air.

Therefore, ventilate the room before measuring, especially

when the air is contaminated or steamy. For example, do not

apply a measurement in the bathroom directly after showering.

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 via the humidity and temperature

sensor 1. To achieve substantial results, do not hold the

measuring tool directly above or next to interference sources

such as radiators or open liquids. Make sure not to cover off

the sensor 1.

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.

Upon 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 temper-

ature of radiators, underfloor heating systems or refrigerator

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 15).

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.

Press measuring button 4 and

point the laser circle perpendicu-

larly against the centre of the object being measured. Upon

completion of the measurement, the measured surface tem-

perature is displayed in line l and the measured ambient tem-

perature 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 15) are

measured. The dew point temperature is calculated based on

both values (see “Dew Point Temperature”, page 15). 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 perpendicu-

larly against the centre of the object being measured. Upon

completion of the measurement, the measured relative hu-

midity is displayed in line b, the measured ambient tempera-

OBJ_BUCH-1625-001.book Page 14 Thursday, July 5, 2012 8:56 AM

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Bosch PTD 1 Manual

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