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Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer
Teledyne Analytical Instruments 168
Source of
SAMPLE GAS
Removed during
calibration
Calibrated
CO
2
Gas
at 100x span gas
concentration
VENT here if input
is pressurized
Chassis
PRESSURE SPAN
IZS
PURGE LINE
SAMPLE
EXHAUST
VENT SPAN
Model T700 gas
Dilution
Calibrator
External
Zero Air
Scrubber
N
2
Figure 7-6: Pneumatic Connections – Ambient Zero/Ambient Span Valves with External Zero
Air Scrubber