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7.1.3.
Concentration Alarm Status/Reset
The 465M front panel displays the concentration alarm status. An LED labeled 'ALARM
STATUS' shows the alarm status as follows:
Alarm Status LED Color
Green
Amber
Red
If the alarms are configured for latching operation, then the RESET button can be used to
attempt to reset all alarms.
Alarms can only be reset if the concentration measured has
subsequently dropped below the alarm limit.
If the alarms are configured for non-latching operation, they will be automatically cleared
when the concentration falls below the alarm threshold. The RESET button has no effect
when the alarms are configured for non-latching operation.
See Sections 7.2.6 and 4.5.4 for additional details on concentration alarms.
7.1.4.
Status LED's
There are four Status LED's on the front panel to the right of the concentration display.
These LED's provide a quick view of the instrument's Status and provides indication of
any problems that may exist. The normal state for these LED's after the initial warm-up
period is as follows:
If any of these LED's are in a different state than shown above, then some adjustment or
troubleshooting should be performed. See Section 10.2 for more detailed information.
32
Teledyne API Model 465M O
Table 7-1: Alarm LED's
NOTE
Table 7-2: Status LED's
Status LED
Sensor OK
Invalid Reading
Check Lamp
Pneumatic Error
Monitor User Manual
3
Alarm State
No alarm active
'HI' alarm active
'HI-HI' alarm active
Normal State
ON
OFF
OFF
OFF
06160J DCN7969
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