Apparatus for measuring oxygen concentration in air or gas, namely, zirconia exhaust gas oxygen sensors, fast light-off oxygen sensors, ultra fast light-off oxygen sensors, thick film type oxygen sensors and oxygen sensors for CNG engine; apparatus for measuring oxygen concentration and controlling the air/fuel ratio in the exhaust gas from internal combustion engines, boilers, incinerators, gas turbines, generators and fuel cells, namely, universal air/fuel heated exhaust gas oxygen sensors

'air':7 'air/fuel':48,68 'apparatus':1,40 'boiler':58 'cell':65 'cng':38 'combust':56 'concentr':5,44 'control':46 'engin':39,57 'exhaust':12,52,70 'fast':16,23 'film':30 'fuel':64 'gas':9,13,53,60,71 'generat':62 'heat':69 'inciner':59 'intern':55 'light':18,25 'light-off':17,24 'measur':3,42 'name':10,66 'oxygen':4,14,20,27,32,35,43,72 'ratio':49 'sensor':15,21,28,33,36,73 'thick':29 'turbin':61 'type':31 'ultra':22 'univers':67 'zirconia':11

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