Connecting The Control Inputs; Table 3-6: Status Output Signals - Teledyne T300 Operation Manual

Teledyne API – Model T300/T300M CO Analyzer

Table 3-6: Status Output Signals

REAR PANEL STATUS
LABEL DEFINITION
1 SYSTEM OK
2 CONC VALID
3 HIGH RANGE
4 ZERO CAL
5 SPAN CAL
6 DIAG MODE
7 CO CAL
2
8 O CAL
2
D EMITTER BUS
SPARE
+ DC POWER
Digital Ground

3.3.1.6. CONNECTING THE CONTROL INPUTS

06864B DCN6314
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 CO
sensor is in calibration mode.
Otherwise this output is unused.
If this analyzer is equipped with an optional O
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 maximum.
The ground level from the analyzer's internal DC power supplies.
To remotely activate the zero and span calibration modes, several digital control inputs
are provided through a 10-pin connector labeled CONTROL IN on the analyzer's rear
panel.
There are two methods for energizing the control inputs. The internal +5V available
from the pin labeled "+" is the most convenient method. However, if full isolation is
required, an external 5 VDC power supply should be used.
CONDITION
sensor, this Output is ON when that
2
sensor, this Output is ON when that
2
Getting Started
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