Teledyne gfc 7000t manual Relay Alarm Outputs Air Products Configuration

Model GFC7000T Carbon Dioxide Analyzer

6.RELAY ALARM OUTPUTS (AIR PRODUCTS CONFIGURATION)

There are 4 relay alarm outputs (AL1-AL4) on the rear panel.

∙AL1 is for “system okay”,

∙AL2 is for “high range status” and

∙AL3 is for “zero calibration status”

∙AL4 is not used

The AL1 relay is energized when the system is okay and de-energized when the system has a fault. The AL2 relay is energized when the high auto-range is in use and and AL3 relays energize when the the instrument is in zero calibration mode.

7. CONTROL INPUTS (AIR PRODUCTS CONFIGURATION ONLY)

An additional control input is available on this instrument. Control input “C” is used to select the range for remote calibration. When input C is low, the instrument selects high range during contact closure calibration.

Teledyne Analytical Instruments 7