Teledyne GC-Pro/TCD - Gas Chromatograph - Manual (Page 48)

Operation GC-Pro TCD
Teledyne Analytical Instruments 34
4.1 Equipment
The following supporting gases and hardware will be required to
operate the (standard) analyzer:
1. Carrier Gas: A cylinder of nitrogen gas, zero gas quality,
equipped with dual stage metallic diaphragm regulator is
required.
2. Span Gas: A cylinder or a permeation device system, capable of
generating known concentration of the species of interest will be
required to standardize the analyzer.
3. Sample Pressure Regulation: An oil-free, metallic diaphragm
regulator must be installed at the sample point when possible; see
Section 3.3.3 Gas Connections.
Note: Depending on the installed options other support gases
may be required. If so equipped, an addendum to this
manual will be included that describes the required gases,
hardware, setup and operational details.
CAUTION: THE GASES USED MUST BE OF THE HIGHEST
QUALITY, ULTRA ZERO GRADES, AS SHOWN
BELOW. FAILURE TO DO SO WILL RESULT IN
CONTAMINATION AND FAILURE TO DETECT AT
THE REQUIRED ACCURACY.
CARRIER GAS: NITROGEN GAS, ULTRA ZERO
GRADE WITH THC LESS THAN 0.05 PPM.
4.2 Preliminary Power-Off Check List
Make the following checks of the installation before proceeding
further into the start-up procedure:
1. Check to see that the sample and supporting gas installation is in
accordance with the specifications called for in the installation
and application sections of the manual (Chapter 3). Be sure that
the supporting gases are of the proper composition and are
connected to the correct fittings at the rear of the analyzer.