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7 CONTROLS & DISPLAYS
7.1 Displays – Fig. 7.1
The displays comprise a 5-digit, 7-segment digital upper display
line and a 16-character dot-matrix lower display line. The upper
display line shows actual values of hydrogen purity, hydrogen in
carbon dioxide, air in carbon dioxide, alarm set points or
programmable parameters. The lower display line shows the
associated units or programming information.
Upper
Display Line
Lower
Display Line
Alarm
L.E.D.'s
Membrane Switches
Fig. 7.1 Location of Controls and Displays
22
%H2 IN AIR
7.2 Switch Familiarization – Fig. 7.2
Advance to
Page 1
Parameter 1
Parameter 2
Parameter 3
For majority
Parameter 4
of parameters
A – Advancing to Next Page
Advance to
next parameter
B – Moving Between Parameters
Parameter Value
C – Adjusting and Storing a Parameter Value
Parameter X
Y
Z
D – Selecting and Storing a Parameter Choice
Fig. 7.2 Function of the Membrane Switches
next page
Page 2
Parameter 1
or
Parameter 2
Parameter 3
Page X
Parameter 1
Parameter 2
Parameter 3
Parameter 4
Adjust
New value is
or
automatically stored
Select
New value is
or
automatically stored
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