Thermo Scientific MIRAN 205B Series, Инструкция по эксплуатации

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Chapter 7 Configuration and Setup
7-12
Note
:
The “Latched” alarm state only applies to the alarm relay. To make the audible
alarm work as a latching alarm, set the Alarm action to ErrScrn in Analysis Preferences
(see page 7-15).
Press
1
from the Alarm Menu to set the state of the High alarm, 2 for the Low alarm and
3 for the STEL alarm. At the next display, specify the state of that alarm by pressing
1
for Off,
2
for Enabled, or
3
for Latched. The display responds "-ACCEPTED-."
┌────────────────────────────────────────┐
│╒═════ ALARM SUMMARY ═════╕ Select high │
││ High alarm: Off │ alarm state: │
││ Low alarm: Off │ │
││ STEL alarm: Off │ Off │
││ │ │
││ _Conc Trig _Relay 1 │ 1=Off │
││ _Avg Trig _Relay 2 │ 2=Enabled │
│└───────────────────────┘ 3=Latched │
└────────────────────────────────────────┘
Alarm State Menu
An Enabled alarm is triggered when the measurement exceeds a preset value. When the
measurement falls below the setpoint, the alarm is extinguished. A Latched alarm also is
triggered when the measurement exceeds a preset value. However, the alarm is only
extinguished when acknowledged via the Control Menu.
Warning
: Intrinsically safe models require special actions with respect to the following
section. Refer to Appendix B for descriptions of these actions.
Press
4
from the Alarm Menu to specify the error and relay triggers. At the Alarm
Trigger display, press
1
to specify alarms related to current concentration and 2 to specify
alarms related to average concentration.
Press
5
from the Alarm Menu to select an alarm relay. At the Alarm Relay display, press
1
to specify Relay 1,
2
to specify Relay 2, and
ENTER
to specify All relays. If the current
application is multi-gas, a Select Gas display selects the gas that is associated with the
selection. If the relay setting is associated with more than one gas, select all gases by
pressing
ENTER
. The next display asks specifies how to activate the relay. Press
1
to
activate it on a High alarm, 2 for a Low alarm, 3 for a STEL alarm, 4 for No alarm
(deactivate the relay), and 5 for All alarms. The display responds "-ACCEPTED-."
The relays are Form C, SPDT rated at 24 V dc, 0.25 A.
Note :
The relays must be turned on in the Control menu