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Optional Hardware and Software Model GFC7001E Carbon Dioxide Analyzer
Teledyne Analytical Instruments 65
5.6.2.1. Internal Pneumatics (OPT 50A)
Figure 5-3: Internal Pneumatic Flow OPT 50A – Zero/Span Valves
Table 5-1: Zero/Span Valve Operating States for Option 52
MODE VALVE CONDITION
SAMPLE
(Normal
State)
Sample/Cal Open to SAMPLE inlet
Zero/Span Open to IZS inlet
ZERO CAL
Sample/Cal Open to ZERO/SPAN valve
Zero/Span Open to IZS inlet
SPAN CAL
Sample/Cal Open to ZERO/SPAN valve
Zero/Span Open to PRESSURE SPAN inlet