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P/N 06160D DCN6409 Teledyne API Model 465M O
3
Monitor Instruction Manual - Page 32
7.1.3. Concentration Alarm Status/Reset
The M465M front panel displays the concentration alarm status. An LED labeled
‘ALARM STATUS’ shows the alarm status as follows:
Table 7-1: Alarm LED’s
Alarm Status LED Color Alarm State
Green No alarm active
Amber ‘HI’ alarm active
Red ‘HI-HI’ alarm active
If the alarms are configured for latching operation, then the RESET button can be used
to attempt to reset all alarms.
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:
Table 7-2: Status LED’s
Status LED Normal State
Sensor OK ON
Invalid Reading OFF
Check Lamp OFF
Pneumatic Error OFF
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.
NOTE
Alarms can only be reset if the concentration measured has
subsequently dropped below the alarm limit.