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Model GFC7000T Carbon Dioxide Analyzer
Teledyne Analytical Instruments 3
4. PNEUMATIC CONNECTIONS
This section provides information on the basic pneumatic configuration and the zero/span
valve option pneumatic configuration. First are diagrams to illustrate the configurations,
followed by a description of the pneumatic ports, and then step-by-step instructions for
attaching the lines.
4.1. BASIC AND ZERO/SPAN VALVE OPTION CONFIGURATIONS
CAUTION
Sample and calibration gases should only come into contact with PTFE
(Teflon), FEP, glass, stainless steel or brass.
NOTE
To prevent dust from entering the gas flow channels, your analyzer was shipped with small
plugs inserted into each of the pneumatic fittings on the back panel. Remove these dust
plugs and store for future use before proceeding.
Figure 4-1 illustrates the most common configuration for gas supply and exhaust lines to the
Model GFC 7000T Analyzer without an internal pump. Figure 4-2 illustrates the pneumatic
connections for optional configuration with optional zero/span valves.
Table 4-1 describes the pneumatic ports.
Note that the flowmeter could also be configured upstream of the instrument. Since most
flowmeters are calibrated at ambient pressure, ensure that the flow going through the flow
meter is at ambient pressure, when it is placed upstream.