Honeywell SPM, Техническое руководство

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SPM Single Point Monitor
SPM Technical Handbook 1-4
1.7.3 Full Alarm Simulation
A full alarm simulation duplicates the SPM response to
four gas conditions:
• Sub-alarm Concentration
• Above Alarm Level 1
• Above Alarm Level 2
• Above Full Scale
To begin a full alarm simulation, the SPM needs to be in
Monitor Mode. Press and hold the alarm reset key (11)
for two seconds until the red system status LED (12)
is flashing. The red system status LED will flash until
the alarm test key is pressed or the instrument ends its
current sample period.
For a simulation of each of the four gas conditions,
continue with key entries as listed in
Section 1.7.4.
1.7.4 Alarm Simulation Key Entries
Level Entry Exit
Sub-alarm AT After displaying concentration, the unit
automatically returns to monitoring.
Alarm Level 1 AR, AT AR
Alarm Level 2 AR, AR, AT AR
Above Scale AR, AR, AR, AT AR
AT = Alarm Test Key (10) AR = Alarm Reset Key (11)
Only one simulation can be made at a time. Conclude a
simulation by pressing the alarm reset key (11). This will
reset the relays, but the 4-20 mA output doesn’t reset
until the sample period ends. The display also acts the
same way. Re-enter the alarm simulation routine by
pressing and holding the alarm reset key (11) until the
red system status LED (12) begins flashing.
When a simulation is concluded, the relay contacts will
reset. The 4-20 mA signal and displayed value will stay
at the simulated level. When the current sample period
is completed the 4-20 mA signal and displayed value will
be updated to indicate the sampled gas concentration.
Section 1.7.5 shows the SPM alarms and signals for
each level of alarm simulation.
1.7.5 Alarm Simulation Reporting
Green
System
Status
LED (9)
Red
System
Status
LED (12)
Alarm
LED (16)
Audio
Signal
Display (19)
Sub-
alarm Steady
On
Off Off Off
Concentration below
alarm level 1
Alarm 1
Steady
On
Off
Steady
On
On
Concentration just
above level 1
Alarm 2
Steady
On
Off
Flashing
Fast
On
Concentration between
alarm level 2 and full
scale
Above
Scale Steady
On
Off
Flashing
Fast
On
xxx + ppb/ppm (above
full scale)
Notes:
1. Press the alarm reset key (11) to reset all
alarm indicators.
2. In actual gas condition, the display (19)
will show last sampled concentration.
In simulated gas condition, the display
(19) will normally reset to 0 unless a
concentration is detected.
3. When the unit is above scale, the display
(19) will show xxx + ppb/ppm, e.g.: AsH
3
above full scale is 150 + ppb; Cl2 above
full scale is 1.50 + ppm.