Teledyne T200H/M

Teledyne API - Model T200H/T200M Operation Manual Getting Started

Figure 3-20: T200M – Internal Pneumatics with Ambient Zero-Span Valve Option 50A

Table 3-10: Zero/Span Valve States

MODE VALVE CONDITION

Sample/Cal Open to sample gas inlet

SAMPLE Zero/Span Open to zero air inlet

Sample/Cal Open to zero/span inlet (activated)

ZERO

CALIBRATION Zero/Span Open to zero air inlet

Sample/Cal Open to zero/span inlet (activated)

SPAN

CALIBRATION Zero/Span Open to span gas inlet / IZS gas (activated)

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 5.8),

 Remotely by using the external digital control inputs (Section 4.15.1.2) or Ethernet

option.

 Remotely through the RS-232/485 serial I/O ports (Section 4.11).

All supply lines should be vented outside of the analyzer’s enclosure. In order to

prevent back-diffusion and pressure drop effects, these vent lines should be between 2

and 10 meters in length.

07270B DCN6512