Teledyne t320u Manuale Utente

Teledyne API – Model T300/T300M CO Analyzer 

Getting Started 

1 

SYSTEM OK 

ON if no faults are present. 

2 CONC 

VALID 

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.   

3 HIGH 

RANGE 

ON if unit is in high range of either the DUAL or AUTO range modes. 

4 ZERO 

CAL 

ON whenever the instrument’s ZERO point is being calibrated. 

5 SPAN 

CAL 

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

6 DIAG 

MODE 

ON whenever the instrument is in DIAGNOSTIC mode. 

7 CO

2

 CAL

 

If this analyzer is equipped with an optional CO

2

 sensor, this Output is ON when that 

sensor is in calibration mode.  
Otherwise this output is unused. 

8 O

2

 CAL

 

If this analyzer is equipped with an optional O

2

 sensor, this Output is ON when that 

sensor is in calibration mode. 
Otherwise this output is unused. 

D 

EMITTER BUS 

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

 

SPARE 

+ 

DC POWER 

+ 5 VDC, 300 mA source maximum. 

 

 

Digital Ground 

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

3.3.1.6. CONNECTING THE CONTROL INPUTS 

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. 

06864B DCN6314