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Chassis – Teledyne GFC-7000T - Trace CO2 Analyzer - manual User Manual

Page 185

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Calibration Procedures

Model GFC7000TA Carbon Dioxide Analyzer

Teledyne Analytical Instruments

167

Source of

SAMPLE GAS

Removed during

calibration

VENT

Calibrated

CO

2

Gas

at span gas

concentration

VENT

here if input

is pressurized

Chassis

PRESSURE SPAN

IZS

PURGE LINE

SAMPLE

EXHAUST

VENT SPAN

External

Zero Air

Scrubber

N

2

Figure 7-4:

Pneumatic Connections – Ambient Zero/Pressurized Span Valves and External

Zero Air Scrubber

Figure 7-5:

Pneumatic Connections – Ambient Zero/Ambient Span Valves