7
This diagram provides information on the change in pressure dew point when there
is a drop in pressure. Example: a drop in pressure from 8 bar to 6 bar working posi-
tive pressure is shown. In this case the pressure dew point drops from 10°C to 5°C.
A reduction in pressure at
the sampling point may
result in a reduction of the
pressure dew point value
Gramme of water vapour per m
3
of moisture saturated compresse air (g/m
3
)*
Air pressure (bar)
* with reference to 0 bar, 20°C
Pressure dew point °C
DEW POINT DIAGRAM FOR COMPRESSED AIR
Air pressure (bar)
