Teledyne 200A Instruction Manual page 105

Teledyne API Model 200A NO
1. Select an NO standard gas that has a nominal concentration in the range of 50 to 100
ppm. Determine the exact concentration [NO]
discussed in Section 2.0.7 (Q.A. Handbook).
2. Determine the volume (cm
volume is not known, estimate the volume by measuring the approximate dimensions of the
chamber and using an appropriate formula.
3. Determine the required minimum total flow output (F
F = analyzer flow demand (cm
T
If more than one analyzer is to be calibrated at the same time, multiply F
analyzers.
4. Calculate the NO concentration [NO]
NO analyzer to be calibrated, using Equation 7-2:
2
[NO] = URL of analyzer (ppm) x 90/100 Equation 7-2
OUT
5. Calculate the NO flow (F
Equation 7-3:
[NO
=
F
NO
[NO
6. Calculate the required flow through the ozone generator (F
[NO
=
F
o
7. Verify that th
V
t =
RC
R
+
F F
O
8. Verify that the dynamic parameter specification (P ) of the calibrator's reaction chamber
is > 2.75 ppm-min using Equation 7-6:
[ ]
=
P NO
R
Analyzer Instruction Manual, 02246, Rev. F1
X
3
) of the calibrator reaction chamber (V
) required to generate the NO concentration [NO]
NO
x
]
F
T
OUT
Equation 7-3
]
STD
X X
]
F V
NO RC
STD
-
2.75 ppm - min
e residence time (t
≤
2 min
Equation 7-5
NO
F V
× ×
NO RC
STD
+ +
F F F F
O NO O NO
by referencing against an NIST-SRM, as
STD
3
/min) x 110/100 Equation 7-1
needed to approximate 90% of the URL of the
OUT
Equation 7-4
F
NO
) in the reaction chamber is <2 min, using Equation 7-5:
R
≥
. 2 75 Equation 7-6
7-17
). If the actual
RC
) using Equation 7-1:
T
by the number of
T
), using Equation 7-4:
O
R
, using
OUT