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