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4
Operation
Calculate ECD restrictor flow
The flow through the ECD restrictor
Figure 22
This flow is below the minimum 0.4 mL/min suggested for helium in 0.10-mm
id tubing. In practice, this setup still gives acceptable peak shapes on the ECD,
so it will be used.
The calculated makeup flow is then [1.77 + 1.77 + 0.18] - 1.38 = 2.34 mL/min.
This should work well.
The configuration can now be installed and used.
46
ECD restrictor flow calculation
(Figure
22) is 0.18 mL/min at 280 °C.
Installation and Operation Guide
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