Sabio 2010D - Page 38

Installation Page 4-15
Maximum Diluent Flow = 1.00 * 10,000 cc/min
= 10,000 cc/min
Permeation Oven Flow = 94 cc/min
94 cc/min
Minimum Dilution Ratio = ------------------------
94 cc/min + 1,906 cc/min
= 4.7 * 10
-2
or 21.28:1
Note: Diluent Flow = 2,000 cc/min - 94 cc/min
= 1,906 cc/min
94 cc/min
Maximum Dilution Ratio = -------------------------
94 cc/min + 10,000 cc/min
= 9.31 * 10
-3
or 107.38:1
Note: Diluent Flow is maximum
Desired SO
2
Instrument Span Points: 100 - 400 PPB
Oven Output Concentration Required for 100 PPB Point:
100 PPB * 107.38 = 10,738 PPB or 10.738 PPM
Maximum Concentration That Model 2010D Can Generate:
10.738 PPM / 21.28 = 504.61 PPB
From the above calculation, a good choice would be for the Model
2010D Permeation Oven to generate a gas concentration of 9 PPM
to ensure that the 100 PPB point can be generated. If a
permeation tube was chosen to generate a gas concentration of 9
PPM, then the following range of concentrations could be
produced:
Low Point = 9 PPM * 9.31 * 10
-3
= 83.79 PPB