Figure 3-19: Internal Pneumatic Flow - Ambient Zero/Pressurized Span Valves; Table 3-10: Ambient Zero/Pressurized Span Valve Operating States - Teledyne T360 Operation Manual

Getting Started
Figure 3-19:
52
Internal Pneumatic Flow – Ambient Zero/Pressurized Span Valves
The following table describes the state of each valve during the analyzer's
various operational modes.
Table 3-10: Ambient Zero/Pressurized Span Valve Operating States
MODE VALVE
Sample/Cal
SAMPLE
Zero/Span
(Normal State)
Shutoff Valve
Sample/Cal
ZERO CAL
Zero/Span
Shutoff Valve
Sample/Cal
SPAN CAL
Zero/Span
Shutoff Valve
The minimum span gas flow rate required for this option is 800 cm
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 4.13.2)

By activating the instrument's AutoCal feature (Section 5.6)

Remotely by using the external digital control inputs (Section 4.15.1.2)

Remotely through the RS-232/485 serial I/O ports (see Appendix A-6 for the
appropriate commands).
Teledyne API Model T360/T360M Operation Manual
CONDITION
Open to SAMPLE inlet
Open to IZS inlet
Closed
Open to ZERO/SPAN valve
Open to IZS inlet
Closed
Open to ZERO/SPAN valve
Open to SHUTOFF valve
Open to PRESSURE SPAN Inlet
3
/min.
07272B DCN6552