Agilent Technologies G1289 User Manual

Introduction to Headspace and to the 7694 Headspace Sampler
Principles of Operation
15
When the sampler is started, it moves the first vial into the oven. Equilibration
time begins. To shorten the required equilibration time, agitate the vial in the
oven. See “Setting Vial Parameters” on page 63.
Figure 4. Standby condition. S1 is open.
Vial Pressurization
At the end of the vial equilibration time, agitation stops, the vial moves in–line
with the sampling needle and is raised by the mechanical rod onto the needle.
The pressurization valve closes. The sampling needle pierces the septum of the
Carrier
gas flow
Auxiliary gas
flow for vial
pressurization
Mass flow
controller
Pressure
regulator
Pressure
transducer
Pressure
transducer
Vent
S1
S2
1
2
3
4
5
6
Flow
restrictor
Sample
loop
To GC
Headspace
vial
Needle
Open
Closed
Carrier gas
Auxiliary gas

Agilent Technologies G1289 Specifications

General

Brand	Agilent Technologies
Model	G1289
Category	Laboratory Equipment
Language	English