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Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer
Teledyne Analytical Instruments 166
7.4. Manual Calibration with Zero/Span Valves
There are four different zero/span valve option configurations (See Section 5.4). They all operate
identically, differing only in the method used to supply calibration gas to the Analyzer.
STEP ONE: Connect the sources of Zero Air and Span Gas as shown below.
Figures 7-3 through 7-6 show the proper pneumatic connections for GFC 7000TAs with various optional
internal valve sets installed.
VENT
Figure 7-3: Pneumatic Connections – Ambient Zero/Pressurized Span Valves