32
3 Operation
3.2.10 Warning ExTox
The measuring mode can be changed for the
Warning ExTox
application via this menu item.
A
WARNING!
Risk to life from operating signal failure
If the operating signal does not sound, the device is not
safe to operate.
●
Stop using the device immediately.
●
Leave explosive areas or areas with a toxic or low-ox-
ygen atmosphere immediately.
Area of use
– Warning of explosive and toxic gas concentrations as well as
lack of oxygen
Symbol
Unit
– % LEL (methane CH
4
)
– % vol. (carbon dioxide CO
2
, oxygen O
2
)
– ppm (carbon monoxide CO, hydrogen sulphide H
2
S)
Measuring range (methane CH4)
Infrared sensor
0 to 100 % LEL
Measurement data display
%LEL
VOL%
VOL%
PPM
PPM
34
0.17
11.5
34
34
AL1 CH4
CO2
AL1 O2
AL1 CO
AL1 H2S
– Digit, for example,
34 % LEL CH
4
0.17 % vol. CO
2
11.5 % vol. O
2
34 ppm CO
34 ppm H
2
S
Fig. 17: Warning ExTox measuring mode
