Teledyne Tablet Accessory T803 Manual De Usuario

Teledyne API T803 CO2/O2 Analyzer Operation Manual 

Troubleshooting and Service 

 

1.  For Pressure related problems: 

  Measure the voltage across C1 it should be 5 ± 0.25 VDC.  

   If not then the board is bad. 

  Measure the voltage across TP4 and TP1.   

  With the sample pump disabled it should be 4500 mV ±250 mV.   

  With the pump energized it should be approximately 200 mV less.  If 

not, then S1, the pressure transducer is bad, the board is bad, or 
there is a pneumatic failure preventing the pressure transducer from 
sensing the absorption cell pressure properly. 

2.  For flow related problems: 

  Measure the voltage across TP2 and TP1 it should be 10 ±0.25 VDC.  

   If not then the board is bad.  

  With flow stopped (sample inlet blocked) the voltage should be 

approximately 1V.   

  If the voltage is incorrect, the flow sensor is bad, the board is bad or 

there is a leak upstream of the sensor. 

07276B DCN6418