Agilent Technologies RMSH–2 Assembly instructions

Agilent Technologies
Big Universal Trap
Installation Sheet
Agilent Gas Purifiers
Maximum operating pressure is 250 PSIG.
Maximum operating temperature is 100 °C.
Maximum flow rate is 8 liters per minute.
Installing the Big Universal Trap
Before installing the trap, make sure the system is free of leaks, the GC inlet and MSD
vacuum chambers are clean (if using mass spectrometry detection), and the system is
generally in good working order.
1Shut down your GC/MSD or reduce the GC heated zone temperatures.
2Set the gas source supply pressure to 10–15 psi and maintain flow in the gas source
line before disconnecting it from the inlet of the old trap.
3Remove the protective nut and plug from the INLET end of the new trap. DO NOT
open the plug on the OUTLET end.
4Immediately attach the new trap to the gas source tubing using one of the included
ferrule sets.
5Insert the tubing through the nut and ferrule set until the tubing rests firmly
against the shoulder in the fitting.
6Finger-tighten the nut and then use a wrench to tighten the nut 3/4 turn for
1/8-inch tubing and 1-1/4 turn for 1/4-inch tubing (see Figure 1).
Part number Fitting Gas
RMSH–2 1/8-inch Helium
RMSH–4 1/4-inch Helium
RMSN–2 1/8-inch Nitrogen
RMSN–4 1/4-inch Nitrogen
RMSHY–2 1/8-inch Hydrogen
RMSHY–4 1/4-inch Hydrogen
CAUTION Failure to immediately connect the trap may cause contamination of the adsorbents inside,
which will reduce its adsorption capacity and contribute to elevated levels of contaminants
observed by the detector. This may result in the need for additional purge time.
Figure 1 Outlet fitting closed
OUTLET
Outlet fitting closedInlet fitting
99.997 + % He, N2, or H2

Agilent Technologies
7Wait for 3 minutes to stabilize the gas pressure inside the new trap. Increase the
gas source pressure to 60 psi.
8Open the outlet fitting and purge the trap for 3 minutes (see Figure 2).
9Adjust the gas source pressure to a normal working level. Connect the outlet fitting
of the trap to the instrument tubing as described in steps 5and 6. Wait for at least
3 minutes to purge out any air that may have entered the instrument tubing line.
The trap is now ready for use (see Figure 3).
For the latest detailed MSDS information, please visit our website at
www.agilent.com/chem/msds.
© Agilent Technologies, Inc. 2002
No part of this document may be reproduced in any form or by any means (including electronic storage and retrieval or trans-
lation into a foreign language) without prior agreement and written consent from Agilent Technologies, Inc. as governed by
United States and international copyright laws.
First edition, May 2002
Printed in USA
Agilent Technologies, Inc.
2850 Centerville Road
Wilmington, DE 19808-1610 USA
Figure 2 Outlet fitting open
OUTLET
Outlet fitting openInlet fitting
99.997 + % He, N2, or H2
NOTE Most instruments (such as GCs or GC-MSDs) require a waiting time for the system to stabilize
and self-clean before use when the gas source or gas trap is changed. This waiting time is often
2 hours or longer. Results from analyses performed too soon after changing the trap may not be
reproducible. The longer the wait time the more stable the system will be, thus protecting the
instrument and the column when changing gases or the gas trap.
Figure 3 Completed installation
OUTLET
Instrument
5184-3513