
Infrared Gas Analyzer | Installation 2 | |
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System Alarm: | Actuates when DC power supplied to circuits is | ||
| unacceptable in one or more parameters. Permanently | ||
| configured as failsafe and latching. Cannot be de- | ||
| feated. Actuates if self test fails. | ||
| (Reset by pressing | button to remove power. Then | |
| press | again and any other button EXCEPT |
System to resume.
Further detail can be found in chapter 4, section
Table
Pin Contact
45Threshold Alarm 1, normally closed contact
28Threshold Alarm 1, moving contact
46Threshold Alarm 1, normally open contact
42Threshold Alarm 2, normally closed contact
44Threshold Alarm 2, moving contact
43Threshold Alarm 2, normally open contact
36System Alarm, normally closed contact
20System Alarm, moving contact
37System Alarm, normally open contact
2.3.3.3Digital Remote Cal Inputs
Accept 0 V (off) or 24 V dc (on) inputs for remote control of calibra- tion. (See Remote Calibration Protocol below.) See Table
Zero: | Floating input. A 5 to 24 V pulse input across the + and – |
| pins puts the analyzer into the Zero mode. Either side may be |
| grounded at the source of the signal. A synchronous signal |
| must open and close the gas control valves appropriately. |
Span: | Floating input. A 5 to 24 V pulse input across the + and – |
| pins puts the analyzer into the Span mode. Either side may |
| be grounded at the source of the signal. A synchronous signal |
| must open and close the gas control valves appropriately. |
Cal Contact: This relay contact is closed while analyzer is spanning and/or zeroing. (See Remote Calibration Protocol below.)
Teledyne Analytical Instruments |