Heath Consultants Gasurveyor 500 Series - Manual (Page 24)

GASURVEYOR 3-500 USER HANDBOOK
14
Switching On in Purge Mode
To switch on in Purge mode, press and hold Button Two
. The Gasurveyor 3-500 will initiate the warm-up
sequence as explained previously. This mode uses the
thermal conductivity Volume gas range only since inert
Nitrogen atmospheres are likely to be present. When in
purge mode, the PURGE flag is activated on the display,
as shown in Figure 3.4.
(Alternate flash)
Figure 3.4 Purge Mode
Switching Off
A double press of Button One turns the instrument
off.