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Optional Equipment
Permeation Oven
9-20
146iQ Instruction Manual
Thermo Scientific
Figure 9–12.
Installing glass tube pt 4
The computation of gas output level is shown in the following information.
Note that is assumed that all devices are properly calibrated and that all
flows are corrected to 25 °C and 1 atm.
Permeation Tube:
Q
(K)
(R)
=
(ppm)
Output
o
Where:
R = permeation rate in ng/min
Q
0
= flow rate of gas (scc/min) into the charcoal scrubber during span mode
K = constant for the specific permeant = 24.45 / MW
MW = molecular weight
Computation of
Concentrations
Summary of Contents for 146iQ
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