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Operational Theory
Figure 2-2: Zirconia Sensor Assembly
Stability and repeatability of the sensor are dependent on
temperature control, flow and reference oxygen stability as well as other
operational variables. Flow rates should be kept constant to minimize
flow errors. The recommended flow rates are as follows:
Sample flow rate:
Reference flow rate:
Maximum flow rate:
In addition, the flow rate differential between the sample and
reference flows must be less than 200 ml/min. The maximum pressure
applied to the sensor cell is 5 psig.
2.3 Sample System
The sample system delivers gases to the ZrO
analyzer rear panel inlet. Depending on the mode of operation either
sample or calibration gas is delivered.
The Model 3000ZA2G 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.
Teledyne Analytical Instruments
100-300 ml/min
100-200 ml/min
500 ml/min
2
3000ZA2G
sensor from the
10
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