2.2.2 CO
2
Sensor
Wiring of the CO
2
sensor has been done at the factory.
2.2.3
Wiring Alarm Relays
Access to the control signals generated from the Series 9510 Carbon Dioxide Analyzer is accomplished
using customer-supplied signal cable. This cable is installed through an output cable strain relief on the
rear of the electronics enclosure. The number of conductors needed is determined by the number of
signals to be interfaced.
The Series 9510 Carbon Dioxide Analyzer is equipped with four single pole double throw (SPDT) relays
with Form C contacts rated at 10 amperes @ 30 VDC and 115/230 VAC. All alarm relays are user
configurable with the three CO
2
alarms defaulting to factory setting of low CO
2
alarms. To configure any of
the three CO
2
alarm relays to act as low alarms, please refer to Section 3.3. Alarm 4 is the instrument
status alarm, which is not displayed as a discrete alarm on the front panel,.
The technique for wiring to the connectors is identical to that discussed in Section 2.2.1. The wiring
configuration is as follows:
Terminal
CO
2
Alarm 1 Relay
26 Common
Contact
27
Normally Open Contact
28
Normally Closed Contact
CO
2
Alarm 2 Relay
23 Common
Contact
24
Normally Open Contact
25
Normally Closed Contact
CO
2
Alarm 3 Relay
20 Common
Contact
21
Normally Open Contact
22
Normally Closed Contact
Instrument Status Alarm
(Alarm 4 Relay)
17 Common
Contact
18
Normally Open Contact
19
Normally Closed Contact
ALPHA OMEGA INSTRUMENTS CORP.
SERIES 9510 CARBON DIOXIDE ANALYZER INSTRUCTION MANUAL
8
