Install Aux Epc Module Frits For Your Application - Agilent Technologies 8860 Installation And First Startup

1 Installing the GC
Purge the supply lines for a few minutes before connecting them to the GC flow modules.
Be sure to vent uncombusted hydrogen to a fume hood or other safe location.
WAR N IN G
When two inlets use the same carrier gas, we recommend using a Tee fitting that includes
shutoff valves for performing leak tests.
When two detectors use the same gases, we recommend using a Tee fitting. Shutoff valves
are not required.
TCD connections The carrier gas and reference gas must come from the same source.
Because of the close spacing of the EPC modules, the simplest way to do this is to attach
lengths of tubing to each input to bring the ends outside the back panel, then join them with a
Tee.
Side mounted detector connections If the GC is equipped with a side-mounted TCD or ECD,
attach the carrier gas to the single gas connection at the back of the side mount enclosure.
(For TCD, an internal Tee feeds the reference gas and input.)

Install Aux EPC module frits for your application

Skip this section if an Aux EPC module is not installed.
The AUX EPC module ships with brown (FID air) restrictors in all channels. For certain
applications, you will have to replace this restrictor (frit) so the EPC module can provide flows
in the correct ranges. See
documentation.
Table 5 G3470-60502 Aux EPC restrictor kit
Kit contains Part number
O-rings, 6/pk 5181-3344
None G3430-80061
3 G3430-80062
3 G3430-80063
3 G3430-20011
Notes for this table
•
•
•
•
32
Table
Marking
1 ring
Brown
2 rings
Red
3 rings
Blue
None
Frit G3430-80061 ships in each AUX channel.
Restrictor kit G3470-60502 is included in the AUX module ship kit.
Always use new O-rings (part number 5181-3344, O-rings, 6/pk).
Install tubing and connectors as needed for each additional gas supply required.
5. Also refer to the other instrument's or application's
Flow Resistance
400 ± 30 SCCM air Low
@ 40 psig
30 ± 1.5 SCCM H2 Medium
@ 15 psig
3.33 ± 0.3 SCCM H2 High
@ 15 psig
Zero (none)
Often used with
FID air, purged splitters, Deans
switch
FID hydrogen
NPD hydrogen
Purged splitter, Deans switch
when using backflush
Installation and First Startup