TABLE 1.0 illustrates the various wiring configurations for the four alarms in the a nalyzer based on
whether the alarms are going to be configured for fail-safe or non fail-safe operation.
TABLE 1.0
18(NO) to
17(COM)
19(NC) to
17(COM)
Low Battery or
Instrument
Status/
Relay 4
21(NO) to
20(COM)
22(NC) to
20(COM)
High or Low
CO
2
Alarm3 /
Relay 3
24(NO) to
23(COM)
25(NC) to
23(COM)
High or Low
CO
2
Alarm2 /
Relay 2
27(NO) to
26(COM)
28(NC) to
26(COM)
High or Low
CO
2
Alarm1 /
Relay 1
Fail-safe OFF
Fail-safe ON
Alarm ON
Contacts
shorted for
each Alarm
Relay
ALPHA OMEGA INSTRUMENTS CORP.
SERIES 9510 CARBON DIOXIDE ANALYZER INSTRUCTION MANUAL
9
