Gerhard Hoetzel

Sensor for determining gas components and/or gas concentrations of gas mixtures

Sensor arrangement for determining gas components and/or gas concentrations of gas mixtures

Resistance probe for determining gas compositions and method of producing it

Method of protecting catalytic converters for exhaust gas purification and heat tone sensor for implementing the method

Thermal toning sensor for carbon content in Diesel engine exhaust - has combined ceramic foil heating element and temp. sensor

Accurate measurement of gaseous oxygen concentration using lambda cell based on Nernst principle

Method and a device for detecting the oxygen content in gases

Sensor for the determination of gases or gas concentrations in gas mixtures

Sensor element for limiting current sensors for determination of the λ value of gas mixtures

Process and measuring device for determining the soot content of exhaust gases