20
3 Operation
3.2.6
Gas measuring
Area of use
– Measuring the gas concentration in pipes and gas systems
– Purging (to demonstrate purity or absence of gas, e.g. when
commissioning/decommissioning gas systems)
Symbol
Unit
– % vol.
Measuring range
Thermal
conductivity sensor
0.0 to 100 % vol.
Measurement data display
Fig. 10: Gas measuring mode
– Digits, e.g. 30 % vol. H
2
– Bar graph with quasi-logarith-
mic scale
