Teledyne GFC 7001EM Status Output Signals, Rear Panel Status Label Definition, Condition

Getting Started Model GFC7001E Carbon Dioxide Analyzer

The status outputs are accessed via a 12-pin connector on the analyzer’s rear panel labeled STATUS (see Figure 3-2). Pin-outs for this connector are:

STATUS

1 2 3 4 5 6 7 8 D

SYSTEMOK	CONCVALID	HIGHRANGE	ZEROCAL	SPANCAL	DIAGMODE	OptionalO
						CAL
						2

+

Figure 3-8: Status Output Connector

REAR PANEL	STATUS
LABEL	DEFINITION

1SYSTEM OK

2CONC VALID

3HIGH RANGE

4ZERO CAL

5SPAN CAL

6DIAG MODE

7CO2 CAL

8O2 CAL

DEMITTER BUS SPARE

+DC POWER

Table 3-5: Status Output Signals

CONDITION

ON if no faults are present.

OFF any time the HOLD OFF feature is active, such as during calibration or when other faults exist possibly invalidating the current concentration measurement (example: sample flow rate is outside of acceptable limits).

ON if concentration measurement is valid.

ON if unit is in high range of either the DUAL or AUTO range modes. ON whenever the instrument’s ZERO point is being calibrated.

ON whenever the instrument’s SPAN point is being calibrated. ON whenever the instrument is in DIAGNOSTIC mode.

If this analyzer is equipped with an optional CO2 sensor, this Output is ON when that sensor is in calibration mode.

Otherwise this output is unused.

If this analyzer is equipped with an optional O2 sensor, this Output is ON when that sensor is in calibration mode.

Otherwise this output is unused.

The emitters of the transistors on pins 1-8 are bussed together.

+ 5 VDC, 300 mA source (combined rating with Control Output, if used).

Digital Ground

The ground level from the analyzer’s internal DC power supplies.

Teledyne Analytical Instruments 40