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Preparing NO, NO
NO
Calibration Curves
2
Thermo Fisher Scientific
Use
to increment and decrement the numeric character at the cursor.
3. Press
entered span concentration.
4. Press
is calculated from:
Where:
[NO
]
x
[NO
]
2
The NO
x
Recorder R
Where:
URL = Nominal upper range limit of the NO
5. Record the NO
, and
Use the following procedures to prepare the NO, NO
x
calibration curves.
1. Generate several additional NO and NO
F
or increasing F
NO
2. For each concentration generated, calculate the exact NO and NO
concentrations using the above equations for [NO]
3. Record the NO and NO
4. Plot the analyzer responses versus the respective calculated NO and
NO
concentrations and draw or calculate the respective calibration
x
curves. For subsequent calibrations where linearity can be assumed,
these curves may be checked with a three-point calibration consisting of
to move the cursor left and right and use
to calculate and save the new NO
to return to the Run screen. The exact NO
( x
F
NO
[
]
=
NO
x
OUT
= diluted NO
concentration at the output manifold, ppm
OUT
x
= concentration of NO
IMP
2
recorder response will equal:
esponse
(%
scale)
concentration and the analyzer's NO
x
.
D
responses.
x
coefficient based on the
x
[NO
[ +
)
]
]
NO
2
STD
IMP
+
+
F
F
F
NO
O
D
impurity in the standard NO cylinder, ppm
[
]
NO
x
OUT
=
x
100
URL
channel, ppm
x
x
, and NO
x
concentrations by decreasing
x
OUT
Model 42i Trace Level Instruction Manual
Calibration
Calibration
concentration
x
+
Z
NO
x
response.
2
x
and [NO
]
.
x
OUT
4-13
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