Agilent Technologies 7820A

74 Advanced User Guide
5 Detectors
TCD gas pressures
Choose a flow, find a pressure, set source pressure 10 psi
(70 kPa) higher.
Ratio of reference flow to
column + makeup flow
4.0
3.0
2.0
1.0
0
Column + makeup flow, mL/min
605040302010
Hydrogen
Helium
Nitrogen
Reference gas flow, mL/min
Pressure (psig)
(kPa)
4
3
2
1
10
69
60
414
50
345
40
276
30
207
20
138