Agilent Technologies 7697A Advanced Operation Guide

48 Advanced Operation
3 Method Development
Figure 12 Sample loop filling
For good, repeatable sample transfer to the loop, develop or
add sufficient vial pressure.
If starting from a low initial vial pressure (< 70 kPa/10 psi),
try increasing the vial pressure. If the results or
repeatability improves, there was insufficient pressure to fill
the sample loop.
Default
This mode should be sufficient for many analyses. Based on
the initial vial pressure (which is known except when using
the Fill with constant volume vial pressurization mode), the HS
calculates an optimum flow rate and final vial pressure for
filling the sample loop. The HS will fill the sample loop from
the vial, adjusting the flow rate, until the sample loop is
swept at least once with sample.
1
2
3
4
5
6
Sample
probe
Carrier gas Vent
1
2
3
4
5
6
6 port valve
Transfer
line
Sample loop
Sample
probe
Carrier gas
Vial
pressurization gas
Vial pressurization
Sample loop filling

Agilent Technologies 7697A Specifications

General

Brand	Agilent Technologies
Model	7697A
Category	Medical Equipment
Language	English