Teledyne 200A Instruction Manual page 113

Teledyne API Model 200A NO
4. Calculate the resulting NO
[
]
NO
2
OUT
Where :
[NO] is the NO co
ORIG
rem aining after GPT.
5. Plot the NO
NO [NO ]
2 2
criteria given for the NO
that the converter needs replacing. See Section 7.8.6 on Moly converter efficiency.
7.8 .6 Moly Converter Efficiency
The moly efficiency should be 96 to 102% efficient. If it is outside these limits it should b
replaced. The converter efficiency can be
For each NO
2
1. Calculate the concentration of NO
[
]
NO
2
CO NV
Where :
[NO ]
x ORIG
NO remaining after GPT.
x
2. Plot the [NO
concentration generated [NO
± 2 % linearity criteria given for the NO
3. Determine the best straight line fit of the plot either by inspection or least squares. The
slope of the resulting straight line is the moly eff
and 1.02. If not, the moly needs to be replaced.
4. If you want the M200A to automatically compensate (Section 7.8.6.1) for converter
efficiency, enter the efficiency value in the front panel by CAL-CONC-MOLY-SET, then
key in the slope from step 3 followed by ENTR. Press EXIT to return to the SAMPLE menu.
Analyzer Instruction Manual, 02246, Rev. F1
X
concentrations as follows:
2
= [NO - [NO
]
ORIG
ncentration before the GPT ozone is turned on, and [NO]
concentration output by the instrument on the y-axis against the generated
2
on the x-axis. The plot should be a straight line within the ± 2% linearity
OUT
and NO channels. If the plot is not linear the most likely c
x
concentration generated:
= [ - ([
]
NO NO
2
OUT
is the NO conce ntration before the GPT ozone is turned on, and [NO
x
] concentration output by the instrument on the y-axis against the
2 CONV
]
2 OUT
* [
]
F NO
NO 2
+
]
REM
F
T
determined from the data collected in 7.8.5.3.
converted as:
2
- [ ) ]
]
NO
x x
ORIG
REM
on the x-axis. The plot sh
and NO channels.
x
iciency. The value should be between .96
7-25
IMP
Equation 7-10
Equation 7-11
ould be a straight line within the
is the NO
REM
ause is
e
] is the
x REM