Layer-type sensor element for determining physical characteristics of gas, comprises measurement unit, heating unit, and heater supply lines

摘要

A layer-type sensor element (10) for determining the physical characteristics of a gas, e.g. the concentration of gaseous components in exhaust gas from a combustion engine, comprises a measurement unit (22), a heating unit and heater supply lines (31, 32). A primary supply line is located between a secondary supply line and the measurement unit, and is held at a constant potential.