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Chapter 2 Electrochemical Sensors
www.intlsensor.com27 Chapter 2 Electrochemical Sensors Chapter 2 Electrochemical Sensors T he oldest electrochemical sensors date back to the 1950s and were used for oxygen monitoring. More recently, as the Occupational Safety and
Chapter 2 Electrochemical Sensors
www.intlsensor.comElectrochemical sensors operate by reacting with the gas of interest and producing an elec-trical signal proportional to the gas concen-tration. A typical electrochemical sensor con-sists of a sensing electrode (or working elec-trode), and a counter electrode separated by a thin layer of electrolyte, Figure 3. Gas that comes in contact with the ...