Bosch GTC 12V-450 Professional handleiding

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English | 25

it as a numerical value in the <User defined> menu

item.

▪ <Reflected temperature>(b):

Setting this parameter can improve the accuracy of the

measuring result, especially with low-emissivity

(=high-reflection) materials. In some situations (espe-

cially in indoor areas), the reflected temperature cor-

responds to the ambient temperature. If there are ob-

jects with greatly deviating temperatures close to

highly reflective objects, this value should be adjusted

as the measurement may be affected. Press the left or

right of the multi-function button(17) to do so.

– <Temperature range>

To ensure high accuracy across the entire measuring

range, measurements are carried out in two temperature

ranges. With the<Auto> measuring function, the measur-

ing tool automatically selects the appropriate temperat-

ure range according to the temperature distribution in the

thermal image. When doing so, it assesses how many

measured values fall above a certain temperature thresh-

old. If very small but hot objects are being measured, it

may select the low temperature range that is not suitable

for high temperatures. This can be determined from the

preceding symbol ~ on the temperature display. In such

cases, switch to the <100°C...450°C> or <–20°C...

100°C> measuring function, in which the colour distribu-

tion corresponds to the set temperature range. The set-

ting is marked on the scale with an arrow pointing up or

down.

– <Display settings>

▪ <Center spot>(m): <ON>/<OFF>

The point is displayed in the centre of the thermal im-

age and shows you the measured temperature value at

this point.

▪ <Hot spot>(n):<ON>/<OFF>

The hottest point (= measuring pixel) is indicated by

red crosshairs in the thermal image. This facilitates the

search for critical areas (e.g. a loose contact terminal

in the control cabinet).

▪ <Cold spot>(l):<ON>/<OFF>

The coldest point (= measuring pixel) is indicated by

blue crosshairs in the thermal image. This facilitates

the search for critical areas (e.g. a leak in a window).

▪ <Temperature scale> (i): <ON>/<OFF>

▪ <Average temperature>(c) :<ON> /<OFF>

The average temperature (c) is displayed at the top

left of the thermal image (average temperature of all

measured values in the thermal image). This can help

you to determine the reflected temperature.

– <Tool settings>

▪ <Display brightness>

Under this menu item, you can change the brightness

of the display lighting.

▪ <LED switch off after …>

Under this menu item, you can select the time interval

after which the worklight will automatically switch off if

no buttons are pressed.

▪ <Tool switch off after …>

Under this menu item, you can select the time interval

after which the measuring tool will automatically

switch off if no buttons are pressed. You can also deac-

tivate automatic switch-off by selecting the<Never>

setting.

▪ <Date & time>

This submenu not only allows you to set the time and

date but also to change their respective formats.

▪ <Language>

Under this menu item, you can select the language

used in the display.

▪ <Factory settings>

Under this menu item, you can reset the measuring

tool to factory settings and permanently delete all

data. This may take several minutes. Then press either

right of the multi-function button(17) to delete all files

or the left of the multi-function button(17) to cancel

the process.

– <Info>

Under this menu item, you can access information about

the measuring tool. There you will find the serial number

of the measuring tool and the installed software version.

This is also where you can find more detailed information

about the measuring tool and about the software update.

You can also press the measuring button(6) to exit any

menu and return to the home screen.

Updating the Measuring Tool Software

If required, you can update the software of the measuring

tool via the USB Type-C® interface. To find out more about

this, visit:

www.bosch-professional.com/thermal-update.

Documenting Measurements

Saving Measurements

The measuring tool begins to take measurements as soon as

it is switched on and does so continuously until it is switched

off.

To save an image, point the camera at the required measur-

ing object and press the "Measurement" button(6). The im-

age is saved in the measuring tool's internal memory. The

measurement is frozen and shown in the display. This en-

ables you to carefully view the image and to make retro-

spective adjustments (e.g. to the colour palette). If you do

not wish to save the frozen image, restart measuring mode

by pressing the "Measurement" button(6). If you wish to

save the image in the measuring tool's internal memory,

press the centre of the multi-function button(17).

Calling Up Saved Images

Proceed as follows to call up saved thermal images:

– Press the centre of the multi-function button(17) again

immediately after saving. The preview of the most re-

cently saved photo now appears in the display.

– Alternatively, you can access the saved photos in the

<Gallery> menu item.

Bosch Power Tools 1 609 92A 9ZG | (14.01.2025)

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