05311001B / Revision 4
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5 INSTRUMENT USER INTERFACE
5.1
Introduction
The instrument user interface comprises the following (shown on Figure 1):
Display
Shows various screens: see Section 5.2 onwards
Soft keys
The function of each of the soft keys depends on the screen
currently being shown on the display: see Section 5.2
Alarm LED
On when an alarm condition exists: see Section 6.5
Fault LED
On when a fault condition exists: see Section 9.1
5.2
Start-up and measurement screens
When you first switch on the instrument, a 'start-up screen' is displayed while the
instrument carries out a self-test.
The start-up screen shows the Servomex name, a 'self-test time elapsed/remaining'
indicator, and messages identifying the tasks being carried out as part of the self-test.
The screen will initially display the "System Check" task message. The measurement
screen is then displayed, as shown in Figure 6 below.
Figure 6 - The measurement screen
Gas being measured
Measurement units
Pressure compensation
indicator *
Current measurement
Alarm icon
(see Section 6.5.1)
mA Range
(see Section 6.4.1)
Icons
(see Section 9.1.2)
Soft key legends
Status icon bar
(see Section 5.4)
Transducer number
("1" always shown)
Software health indicator
