2 Product description
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17
2.6
Units for concentration data
2.6.1
Selectable units (warning)
In the
Warning
application, the measurement value for the flam
-
mable gases can be displayed either % LEL or % vol. as the unit.
The device is supplied set to the % LEL unit. The unit can be
changed using the
GasCom
software.
Fig. 8:
Warning
application - measurement value of flammable gas
(
here:
CH
4
) with different units
Left image: Unit % LEL
Right image: Unit % VOL
2.6.2
Conversion of the concentration data
Gas concentrations are specified in the unit ppm (parts per mil
-
lion) or % vol. (volume percent).
Conversion:
1 % vol. = 10,000 ppm
0.1 % vol. = 1,000 ppm
