2-9
Trace Oxygen Analyzer Operational Theory 2
Teledyne Analytical Instruments
Figure 2-7: Block Diagram of the Model 3000TA-XL Electronics
In the presence of oxygen the cell generates a current. A current to
voltage amplifier converts this current to a voltage, which is amplified in the
second stage amplifier.
The second stage amplifier also supplies temperature compensation for
the oxygen sensor output. This amplifier circuit incorporates a thermistor,