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Detector Systems
Thermal conductivity detector (TCD)
143
Thermal conductivity detector (TCD)
0 ml/min
Switching
Flow 1
(off)
30 ml/min
Column
Flow
30 ml/min
Switching
Flow 2
(on)
30 ml/min
Switching
Flow 1
(on)
30 ml/min
Column
Flow
0 ml/min
Switching
Flow 2
(off)
VENT (60 ml/
min)
VENT (60 ml/
min)
24 6
6
36
24
36
24
6
36
HP 5890 SERIES II TCD Cell
Thermal Conductivity Detector (TCD)
Figure 7-7
Filament
Channel
Filament
Channel