Teledyne 3000 Ultra Trace - PPB oxygen analyzer - Manual (Page 18)

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2 Operational Theory Model Ultra Trace 3000
Teledyne Analytical Instruments
2.3 Sample System
The sample system delivers gases to the Micro-Fuel Cell sensor from
the analyzer rear panel inlet. Depending on the mode of operation either
sample or calibration gas is delivered.
The Model Ultra Trace 3000 sample system is designed and fabricated
to ensure that the oxygen concentration of the gas is not altered as it travels
through the sample system.
The sample system for the standard instrument incorporates 1/4" VCR
for sample inlet and outlet tube connections at the rear panel. The sample or
calibration gas that flows through the system is monitored by a flowmeter
downstream from the cell. Figure 2-4 shows the piping layout and flow
diagram for the standard model.
Figure 2-4: Piping Layout