Teledyne 200A Instruction Manual page 107

Teledyne API Model 200A NO
Because low flows are difficult to control and measure, it is often advantageous to set a higher
total flow than needed. In this example, we will let F
2. Determine the highest NO concentration, [NO]
Equation 7-2:
[NO] = 0.5 ppm (90/100) = 0.45 ppm
OUT
3. Calculate the NO flow (F
Equation 7-3:
. 0 45
=
F
NO
4. Calculate the required flow rate through ozone generator (F
50.5 ppm x 24.5 cm /
=
F
O
= 80984 cm /
5. Verify that the residence time (t
t =
R
260
cm
6. Verify the dynamic parameter specification (P
Equation 7-6:
P = 50 5 . ppm
R
7. Calculate the diluent air flow (F
F = 2750 cm
D
Analyzer Instruction Manual, 02246, Rev. F1
X
) required to generate the NO concentration [NO]
NO
×
3
ppm 2750 / min
cm
50 5 . ppm
3
min
2.75 ppm - min
6 2
- 24.5 cm /
min
3
180
cm
+
3 3
/ min 24 5 . / min
cm
3
24 /
cm
×
+
3
260 / min 24
cm
3 3
/min - 260 cm /min - 24.5 cm
= 2750 cm3/min
T
, required at the output manifold, using
OUT
=
3
24.5 / min
cm
3
x 180 cm
- 24.5 cm /
3 3
min = 260 cm /
) in the reaction chamber is <2 min using Equation 7-5:
R
=
. 0 63 min
) of the calibrator reaction chamber using
R
min
×
3
5 . / min 260
cm cm
) required at the mixing chamber, using Equation 7-7:
D
3
/min = 2465.5 cm
7-19
) using Equation 7-4:
O
3
min
min
3
180
cm
+
3 3
/ min 24 5 . / min
cm
3
/min
, using
OUT
= −
. 2 75 ppm min