Teledyne gfc 7000ta operation manual Internal Pneumatic Flow Ambient Zero/Ambient Span

FAQ Model GFC7000TA Carbon Dioxide Analyzer

The minimum span gas flow rate required for this option is 800 cm3/min.

The state of the zero/span valves can also be controlled:

∙Manually from the analyzer’s front panel by using the SIGNAL I/O controls located under the DIAG Menu (Section 6.13.2),

∙By activating the instrument’s AutoCal feature (Section 7.6),

∙Remotely by using the external digital control inputs (Sections 6.15.1.2 and 7.5.2), or

∙Remotely through the RS-232/485 serial I/O ports (see Appendix A-6).

External CO2 Scrubber (Option 53 0nly)

CHAMBER	GFC Wheel Housing	GFC Motor Heat Sync
SAMPLE	Purge Gas Flow Control

Figure 5-3: Internal Pneumatic Flow – Ambient Zero/Ambient Span

Teledyne Analytical Instruments 56