Teledyne operating instructions Sample System, Operational Theory 3000ZA-3X

Operational Theory 3000ZA-3X

One of the three sensors has been modified (0-200 ppm range) to sense low levels of oxygen—less than 1 ppm and generate a current proportional to the concentration. The sensor is designed for long term stability and an operating life of 5 years.

2.3 Sample System

The sample system delivers gases to the ZrO2 sensors, located on the cell block, from the analyzer rear panel inlet. Depending on the mode of operation either sample or calibration gas is delivered.

The Model 3000ZA 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 compression tube fittings for sample inlet and 1/4” 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 2-1 shows the piping layout for the standard model.

Figure 2-2 shows the flow diagram for sampling systems used for the three configurations offered as options for this instrument. In the standard instrument, calibration gases can be connected directly to the Sample In port by teeing to the port with appropriate valves.

Figure 2-1: Model 3000ZA-3X Sample System

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