Thermo Scientific TriPlus 300, Руководство по предварительной установке

Страница: 31 / 32

1
TriPlus 300 Headspace Site Preparation
LAN Network Requirements
Thermo Scientific TriPlus 300 Headspace Preinstallation Requirements Guide 9
Oxygen and moisture cannot be prevented from entering the system during cylinder
changes. To minimize the impact of these contaminants on the GC-GC/MS system, high
purity gas handling equipment should be used. To further protect the system from oxygen
and moisture, point-of-use purifiers should be installed in the carrier gas lines just before
they reach the GC to remove any residual contaminants. See
Table 7 .
7. Gas lines should be:
• As short as possible, run to the back or side of the GC-GC/MS system.
• Made of pre-cleaned copper or stainless steel when using helium and hydrogen.
• Free of oil and moisture.
8. Obtain the proper gas line filters, which help prevent impurities and contaminants from
entering your system. Water, oxygen, and total hydrocarbons should be less than 1 ppm
to avoid high background noise and prevent contamination. The GC-GC/MS system is
equipped with intake filters that trap moisture, oxygen, and hydrocarbons.
9. Store gas tanks and bottles properly so they will not damage cables or gas lines. Ensure
they are secured in accordance with standard safety practices.
LAN Network Requirements
The connection between the TriPlus 300 Headspace instrument and a Thermo Scientific
Chromatography Data System (Chromeleon, Xcalibur, Chrom-Card, ChromQuest) must be
carried out via Local Area Network (LAN).
Your lab must be provided with one or more RJ-45 wall outlet. To connect your system to
your site’s LAN network, you must have an additional shielded twisted pair network cable
(cross cable).
Table 7. Trap Specifications
Traps Use
Moisture trap Water in the gas lines may damage the analytical column and
contaminate the system. Water content should be less than 1 ppm in
all cases. If you are using multiple traps, install the moisture trap
closest to the gas supply, before the hydrocarbon and the oxygen trap.
Hydrocarbon
trap Hydrocarbon traps remove organic materials from gases. If you are
using multiple traps, install the hydrocarbon trap after the moisture
trap, but before the oxygen trap.
Oxygen trap Oxygen content in the gas lines should be less than 1 ppm. To
achieve a level of oxygen of less than 1 ppm, install an
oxygen-removing trap in the gas lines between the gas tank and the
TriPlus 300 Headspace instrument. If you are using multiple traps,
the oxygen trap should be the last trap in the series.