Potentiometric oxygen sensor

Potentiometric oxygen sensors are characterized by the fact that the sensor signal is an electrical voltage, which is defined by ratio of partial pressures between measurement medium and a user-definable reference.

The characteristic can thereby be represented as follows:

Un Cell voltage [V]
R Gas constant (8,314 J mol−1 K−1)
FFaraday constant ( 96485 C mol−1 )
TCell temperature [K]
pO2meas Measuring gas [mbar]
pO2Ref Reference gas   [mbar]

This sensor is characterized by its robustness, humidity resistance  and long life time.

Typical applications are automatic cooking either in home appliance or professional equipment. and food transport (container). For this sensor type there is only one measuring range available which covers all possible oxygen concentration ranges.