Teledyne 6400A - Sulfur dioxide analyzer - Manual (Page 99)

TAI Model 6400A SO
2
Analyzer Operator Manual, 02164, Rev. G
7-17
1. Zero calibration procedure is identical to Table 7-11.
2. Generate the SO
2
concentration to approximately 80% of the URL of the range.
Calculate the expected concentration as follows.
[ ] . SO
P
F F
c
2
3
4
4
10
382 10
=
Ч
+
Ч Ч −
--------------------------------------- Equation 7.2
[SO
2
] = SO
2
gas concentration, ppm
P = permeation flow rate at the specific temperature, ug·SO
2
/min.
F
c
= carrier flow rate over the permeation tube, SLPM (25
o
C, 760 mmHg)
F
d
= diluent air flow rate, SLPM (25
o
C, 760 mmHg)
Figure 7-3: Diagram F Permeation Calibration System