Thermo Scientific TSQ 8000, Preinstallation Manual

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1
Site Preparation
Gas Equipment Requirements
12 TSQ 8000 Preinstallation Requirements Guide Thermo Scientific
• Oxygen and moisture cannot be prevented from entering the system during cylinder
changes. To minimize the impact of these contaminants on the GC 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 prior to the
GC to remove any residual contaminants.
CI Gas
• If your TSQ 8000 is equipped with the Chemical Ionization (CI) Reagent Gas Flow
module, make sure you have the proper gas for it. Typical flow rates are only 1-3 mL/min,
so smaller tanks like lecture bottles can be used.
WARNING FIRE HAZARD: When using hydrogen, be aware that it can flow into the oven
and create a fire hazard. Turn off the supply until the GC column is in the inlet of the
TSQ 8000. Whenever you use hydrogen, it is critical to test all connections, lines, and
valves for leaks before using the instrument. When performing maintenance, be sure to
turn off the hydrogen supply.
Note Thermo Fisher Scientific installation specifications require methane as a CI gas. You
must have one tank of methane at installation, or the field service engineer will not be able
to run specifications on your TSQ 8000.
Table 7. CI Gas Specifications
Gas Type Purity Outlet Pressure Regulator Connector*
Methane 99.99%
high-purity 35-240 kPa
(5-35 psig) Dual-stage brass
regulator with
stainless steel
diaphragm CGA-350
Isobutane 99.9%
instrument
grade
35-240 kPa
(5-35 psig), Dual-stage brass
regulator with
stainless steel
diaphragm CGA-510
Ammonia 99.99%,
anhydrous
grade
35-240 kPa,
(5-35 psig) Consult your gas
supplier for
specific regulator
requirements. CGA-240
* Connectors will vary with cylinder size. Confirm that your regulator will work with your gas tank. All connections
to the GC/MS are 1/8 in. Swagelok fittings.