Teledyne 200A Instruction Manual page 86

Teledyne API Model 200A NO Analyzer Instruction Manual, 02246, Rev. F1
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If an ammonia permeation tube is being used, substitute the molecular weight of NH (17
3
g/mole) for that of NO .
2
o
The temperature is set at 50.0 C. Check SETUP-MORE-VARS and scroll to the IZS-SET
o
variable to verify that the temperature is properly set. It should be set to 50 C with over-and-
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under temperature warnings set at 49 C and 51 C. There is a 60 cc/min flow across the
permeation tube at all times to prevent build-up of NO gas in the tubing.
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If desired, the output of the permeation tube can be adjusted by adjusting the oven temperature
o
up or down slightly. The adjust increment is 0.1 C to facilitate small adjustments of the setpoint
temperature.
WARNING
Do not leave instrument turned off for more than 8 hours
without removing the permeation tube. Do not ship the
instrument without removing the permeation tube. The
tube continues to emit NO , even at room temperature
2
and will contaminate the entire instrument.
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