Teledyne GFC 7001EM operation manual Manual Calibration with ZERO/SPAN Valves

Calibration Procedures Model GFC7001E Carbon Dioxide Analyzer

9.3.MANUAL CALIBRATION WITH ZERO/SPAN VALVES

There are a variety of valve options available on the GFC 7001E/EM for handling calibration gases (see Section 5.6 for descriptions of each).

Generally performing calibration checks and zero/span point calibrations on analyzers with these options installed is similar to the methods discussed in the previous sections of this section. The primary differences are:

On instruments with Z/S valve options, zero air and span gas is supplied to the analyzer through other gas inlets besides the sample gas inlet.

The zero and span calibration operations are initiated directly and independently with dedicated keys (CALZ & CALS).

9.3.1.SETUP FOR CALIBRATION USING VALVE OPTIONS

Each of the various calibration valve options requires a different pneumatic setup that is dependent on the exact nature and number of valves present.

Figure 9-3: Pneumatic Connections – Option 50A: Zero/Span Calibration Valves

Figure 9-4: Pneumatic Connections – Option 50B: Zero/Pressurized Span Calibration Valves

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