68 Technical Manual | Dräger Polytron
®
8000 Series
Instrument settings
12.10 Alarm configuration
12.10.1 Switching the alarms on or off
1. Select Settings > Instrument > Alarm > Alarm on/off.
2. Select Enable or Disable and confirm.
12.10.2 Configuring alarms
1. Select Settings > Instrument > Alarm > Alarm A1 or Alarm A2 and confirm.
The current alarm threshold is displayed.
2. Apply settings and confirm the configuration steps successively with Next.
a. Set value for alarm threshold.
b. Set alarm direction.
c. Set latching mode.
d. Set acknowledgement mode.
Enable Alarm signaling is on.
Disable Alarm signaling is off.
LEDs, relays and interfaces do not
indicate an alarm condition.
The 4-20mA interface transmits the
maintenance signal.
The measured value and the symbol
are displayed.
The fault relay indicates a fault.
Rising The alarm direction is called rising, if the gas concen-
tration has to exceed a certain value to activate an
alarm.
Falling The alarm direction is called falling, if the gas concen-
tration has to fall below a certain value to activate an
alarm.
Latching Once the alarm threshold is reached, the instrument
will trigger the alarm. It will remain in alarm status even
if the gas concentration does not meet the alarm condi-
tion any more. To clear a latching alarm it has to be
acknowledged.
Non-latching The alarm status clears if the gas concentration does
not meet the alarm condition anymore.
Acknowledgeable Alarm relay and LED can be reset before alarm condi-
tion clears.
Non-acknowl-
edgeable
Alarm relay and LED can not be reset until the alarm
condition clears.
Pre-Acknowl-
edgeable
Alarm status is acknowledgeable before the alarm con-
dition clears. However, the alarm relay and LED stay
active until the alarm condition clears.
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