Teledyne Insta Trans - trace and percent oxygen transmitter - Manual (Page 17)

Trace Oxygen Transmitter Operational Theory
Teledyne Analytical Instruments 9
mixture. In other words it has a linear characteristic curve, as shown in
Figure 2-3. Measuring circuits do not have to compensate for
nonlinearities.
In addition, since there is zero output in the absence oxygen, the
characteristic curve has close to an absolute zero (within ± 0.5 ppm
oxygen).
Figure 2-3: Characteristic Input/Output Curve for a Micro-fuel Cell