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Percent Oxygen Analyzer
A-3 Drawing List
C96143
3000RS Adapter Outline
C96118
3000RS single module outline
A.4 Application notes
3000 SERIES ANALYZERS
APPLICATION NOTES ON PRESSURES AND FLOW
RECOMMENDATIONS
The 3000 series analyzers require reasonably regulated sample
pressures. While the 3000 analyzers are not sensitive to variations of
incoming pressure provided they are properly vented to atmospheric
pressure. The pressure must be maintained as to provide a useable flow
rate trough the analyzer. Any line attached to sample vent should be 1/4
or larger in diameter.
FLOW RATE RECOMMENDATIONS:
A usable flow rate for a 3000 series analyzer is one which can be
measured by the digital flow sensor. This is basically .2-2.4 SLPM. The
optimum flow rate is 1 SLPM.
Note: Response time is dependent on flow rate, a low flow rate
will result in slow response to O
stream. The span flow rate should be the approximately
same as the sample flow rate.
CELL PRESSURE CONCERNS:
The sensors used in 3000 series analyzers are optimized to function
at atmospheric pressure. At pressures other than atmospheric the
diffusion rate of O
will be different than optimum value. Higher
2
pressures will produce faster O
reading and shorter cell life. To use a 3000 series analyzer at a cell
pressure other than atmospheric, the analyzer must be calibrated with a
known calibration gas at the new cell pressure to adjust for the different
diffusion rate. Cell pressures below 2/3 atmospheric are not
Teledyne Analytical Instruments
changes in the sample
2
diffusion rates resulting in higher O
2
Appendix
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