Teledyne MODEL T703 Manual Do Utilizador

 

 

In addition to being useful predictive diagnostic tools, the test functions viewable from the calibrator’s front panel 
can be used to isolate and identify many operational problems when combined with a thorough understanding of 
the calibrator’s Theory of Operation (see Section 9).  

The acceptable ranges for these test functions are listed in the “Nominal Range” column of the calibrator Final 
Test and Validation Data Sheet shipped with the instrument.  Values outside these acceptable ranges indicate a 
failure of one or more of the calibrator’s subsystems.  Functions whose values are still within the acceptable 
range but have significantly changed from the measurement recorded on the factory data sheet may also 
indicate a failure.   

A worksheet has been provided in Appendix C to assist in recording the value of these Test Functions. 

Table 11-2 contains some of the more common causes for these values to be out of range. 

Possible causes of faults are the same as O3 GEN REFERENCE WARNING from Table 
11-1 

Gas flow problems directly affect the concentration accuracy of the T703’s O

3

 calibration 

gases.  This number is computed using data from the calibrator’s  

-  Check for Gas Flow problems. 
-  Check the pressure regulator 

Check the O

3

 generator heater and temperature sensors 

Possible causes of faults are the same as O3 GEN LAMP TEMP WARNING

 

from Table 11-1 

Incorrect Lamp temperature can affect the efficiency and durability of the O

3

 generators UV 

lamp. 
Possible causes of faults are the same as O3 GEN LAMP TEMP WARNING from Table 
11-1 

Same as REGULATOR PRESSURE WARNING from Table 11-1 

If the Box Temperature is out of range, make sure that the:  
Box Temperature typically runs ~7

C warmer than ambient temperature.  

-  The Exhaust-Fan is running 
-  The there is sufficient open space to the side and rear of instrument to allow adequate 

ventilation.   

07223B DCN6378