Agilent Technologies 6890 GC User Manual

73
Part 2. NonEPC control Flow and Pressure Control
Detectors
Detectors
NonEPC detectors have internal single-stage pressure regulators for some gas
streams. You should still use external two-stage regulators.
You may also want to use traps to remove contaminants from the gas supply. If
so, they should be as close to the back of the GC as possible.
Internal/external plumbing: FID and NPD without EPC
Hydrogen and air flows for these detectors are controlled by external pressure
regulators and internal flow restrictors. Makeup gas is controlled by an internal
pressure regulator located behind the detector positions. See the Detectors
volume for flow rate details.
Figure 12 FID and NPD without EPC
EXTERNAL
pressure
regulators
Air in
H2 in
Makeup in
Internal
pressure
regulator
Restrictors
Keyboard-controlled
On/off solenoid
valves
FID
or
NPD
6890 GC

Agilent Technologies 6890 GC Specifications

General

Brand	Agilent Technologies
Model	6890 GC
Category	Laboratory Equipment
Language	English