Dräger Polytron 8100, Инструкция по эксплуатации, Страница: 14 / 254

14 Dräger Polytron 8100
Operation
4.2 The display and LEDs
4.2.1 Measuring mode
4.2.2 Special states
If the instrument is in a special state, a proper measurement
can no longer be guaranteed.
This is the case:
1 when the gas concentration exeeds the measuring range,
2 when a fault occurs.
3 during calibrations,
4 during bump tests,
5 the warm-up phase and
6 maintenance,
4.2.3 The LED symbols
To configure the alarm settings and for information regarding
the alarm LED status depending on the alarm configuration
refer to 5.7 on Page 19.
4.2.4 Status indicators in the display
The following status indicators may appear on the right side of
the display.
Display example Description
In normal operation, the
display shows the measured
gas concentration, the
selected gas and the unit of
measurement.
Exceeding the alarm
thresholds. Example shows
pre alarm A1.
Display example Description
Exceeding measuring range.
Fault indication (see 6.3.1 on
Page 33).
The current output of the
analog interface is set to fault
current and the fault relay is
asserted (if relay option is
installed).
For calibration, warm-up
phase, bump test and
maintenance the
symbol is displayed on the
right side of the display. On the
left side corresponding
information is given.
CO ppm
0
CO A1
33
CO
ppm
CO ppm
Symbol LED Description
red Alarm triggered
yellow Fault
green
Power ON
Warning message available – to display warnings, see
Section 5.2.1 on Page 18.
Error message available – to display errors, see
Section 5.2.2 on Page 18.
Maintenance signal is transmitted, see Section 5.9.2 on
Page 24.
Measuring range of analog interface exceeded
Measurement less than range of analog interface
Analog interface is set to a fixed value (e.g. Multidrop HART
communication) and is not transmitting any measurement
signal.
"Preventive" maintenance: The sensor is ready for operation.
"Preventive" maintenance: The sensor is ready for operation
but is close to the end of its life cycle.
"Preventive" maintenance: The sensor is still ready for
operation but should be changed as soon as possible.
The data-logger is active in Roll mode.
To activate/deactivate, see Section 5.11.2 on Page 29.
The data-logger is active in Stack mode.
To activate/deactivate, see Section 5.11.2 on Page 29.
SIL SIL is activated (refer to the Polytron 8xx0 Safety Manual
part number 9033307).