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Page: 17
4. OPERATION
4.1 INTRODUCTION – HUMAN-MACHINE INTERFACE SYSTEM
The Gas Sensor Module utilizes a visual menu system operated by means of a magnet. A magnetic tool
(5358-50) is supplied for this purpose. The menu system is used to configure alarm set-points, calibrate the
sensor module, and for maintenance procedures and alarms acknowledge.
4.2 HUMAN-MACHINE INTERFACE
The module menu system is operated by means of directing the magnet stick toward each of four independent
hall-effect magnetic switches. Each switch functions as if it is a manually activated panel key. The keys are
located above and below the faceplate display and are labeled
M , E , ▲ and ▼as shown in Figure 4-1. The
key functions are as follows:
• Key
M : MODE
• Key E : ENTER
• Key ▲: UP (+)
• Key ▼: DOWN (-)
Ke
y
M
Ke
y
/
\
Ke
y
E
Ke
y
\
/
Figure 4-1:
IT Module
–
Menu Switch Locations