Sabio 2010D - Page 36

Installation Page 4-15
100 cc/min
Minimum Dilution Ratio = ----------------------------
100 cc/min + 3,900 cc/min
= 2.5 * 10
-2
or 40:1
Note: Diluent Flow = 4,000 cc/min - 100 cc/min
= 3,900 cc/min
5 cc/min
Maximum Dilution Ratio = -----------------------
5 cc/min + 10,000 cc/min
= 5.00 * 10
-4
or 2,001:1
Note: Diluent Flow is maximum and Source Flow is
minimum
Desired Instrument Span Points: 50 - 490 PPB
Concentration Range for 50 PPB Point:
50 PPB * 40.00 = 2,000 PPB or 2.00 PPM
50 PPB * 2,001 = 100,050 PPB or 100.05 PPM
Concentration Range for 490 PPB Point:
490 PPB * 40.00 = 19,600 PPB or 19.6 PPM
490 PPB * 2,001 = 980,490 PPB or 980.49 PPM
From the above calculation, a good choice would be for the gas
cylinder concentration to be in the range of 19.6 PPM to 100.05
PPM. If a gas cylinder concentration of 60 PPM was chosen then
the following range of concentrations could be produced:
Low Point = 60 PPM * 5.00 * 10
-4
= 30.00 PPB
High Point = 60 PPM * 2.50 * 10
-2
= 1,500 PPB