6
EN
gas detector BG20
Operation
Inserting the battery
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Insert the supplied battery before first use.
Note
Make sure that the surface of the device is dry and the
device is switched off.
1. Remove the device from the protective rubber cover (2).
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The protective rubber cover is fitted tightly. Push the
protective cover above the display off the housing and
remove it towards the rear.
2
2. Loosen the screw at the cover of the battery
compartment (18).
18
19
3. Use the battery clip (19) to connect the battery with correct
polarity.
4. Screw the cover of the battery compartment (18) back in.
5. Pull the protective rubber cover back over the device.
Attaching the warning sign
Prior to initial start-up, check whether the warning sign at the
rear of the device is in your local language, if not, paste the
proper one over it. The warning sign is supplied along with the
device in several languages. Please proceed as follows to attach
the warning sign to the rear of the device:
1. Remove the label in your local language from the supplied
film.
2. Affix the label in the intended position at the rear of the
device.
Switch-on
Note
The device calibrates after each switch-on taking the
CO concentration in the environment as basis. For
reasons of safety however, regardless of the actual CO
concentration in the environment upon switch-on, the
device accepts no more than 10 ppm as upper limit!
Example: Should the background concentration of CO
amount to 30 ppm, the device will not use 30 ppm as
reference value, and hence zero point, but instead
maximally 10 ppm! The set alarm threshold of 30 ppm
(see also 'Carrying out a measurement') would
therefore be activated at an actual CO value of 40 ppm
(display: 30 ppm!).
Always make sure to switch the device on in CO-free
surroundings, e.g. in fresh air, for otherwise the
displayed CO contents of the subsequent
measurements will be incorrect!
1. Go to a place with a low CO concentration (e.g. fresh air).
2. Press the on/off switch (5).
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The indicator LED (4) will briefly flash red and then be
illuminated in green. The warm-up phase of the device
incl. self-test is started.
3. Wait until the self-test is completed.
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The device displays (7) a countdown from 11 to 0.
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An acoustic signal indicates, that the self-test is
completed.
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The device is ready for operation.
