Gas Concentration Conditions; Gas Condition Reporting; Instrument Fault Condition; Disabling The External Alarm Relay Contact - Honeywell SPM Technical Handbook

Do not confuse this two-minute alarm with the proper
response to the verification routine. To prevent the two-
minute alarm, do not leave the tape load lever (18) open
for more than two minutes.
Note:
The two-minute alarm will also activate
during Chemcassette
load lever (18) is left open for more than two
minutes.

1.9 Gas Concentration Conditions

Section 1.9.1 shows the SPM status reports of four
actual gas concentrations.
Press alarm reset (11) to return all alarms and relay
contacts back to their normal state. If the concentration
condition has not been corrected, the instrument
will revert to the alarm state during the next sample
period.

1.9.1 Gas Condition Reporting

Green Red
System System
Status Status
LED (9) LED (12)
Sub- Steady
Off
alarm On
Steady
Alarm 1 Off
On
Steady
Alarm 2 Off
On
Above Steady
Off
Scale On
Notes:
1. Press alarm reset (11) to reset all alarm
indicators.
2. In actual gas condition, the display will
SPM Technical Handbook
replacement if the tape
®
Alarm Audio
Display (19)
LED (16) Signal
Actual
Off Off
Concentration
Steady Actual
On
On Concentration
Flashing Actual
On
Fast Concentration
Flashing
On xxx + ppb/ppm
Fast
SPM Single Point Monitor
show last sampled concentration. In
simulated gas condition, the display will
normally reset to 0 and the 4-20 mA output
returns to 4 mA at the end of the sample
period unless a concentration is detected.
3. When unit detects an above full scale
condition, the display will show xxx + ppb/
ppm, e.g.: AsH
ppb; Cl2 above full scale is 1.50 +ppm.

1.10 Instrument Fault Condition

The SPM reports an instrument fault condition with
flashing red and green system status LEDs (9) and
(12), flashing relay disable LED (13), and an intermittent
audio signal.
Note:
The relay disable LED (13) does not flash for
the open tape load lever fault. (See
1.8.2).
The instrument fault relay will be activated, and the digital
display (19) will show (FAULT XX).
information on fault codes.
To reset the unit after a fault condition, press alarm reset
(11). If the fault condition has not been corrected, the
SPM will revert back to the fault reporting status.
1.11 Disabling the External Alarm Relay
Contact
To disable the external concentration alarm relay
contacts, press relay disable (14). The red relay disable
LED (13) will light to indicate the disabled condition.
The instrument fault relay will change status whenever
you disable the concentration alarm relay. This feature
insures that personnel will be alerted to any change in
instrument monitoring status.
1-6
above full scale is 150 +
3
Section
See Section 4.7 for