Product Description:

NE4-NO2 NE-NO2 Electrochemical Nitrogen Dioxide Gas SensorFor Industrial Applications

1.General

Nemoto NE series sensors were developed for industrial applications, and NE4-NO2 is a electrochemical nitrogen dioxide gas sensor. Shape and pin positions are compatible with others, but the stability, repeatability, durability and reliability are superior to others. Features and applications are as follows.

2.Detection principle

Electrochemical sensor consists of working electrode on which oxidization or reduction takes place, counter electrode on which reduction or oxidization takes place, and reference electrode which can monitor and keep the voltage at constant. Structure of electrochemical sensor is shown in the following figure, nitrogen dioxide gas diffuses through membrane into working electrode, and is reduced to nitrogen monoxide at working electrode. Consequently generated oxygen ion at working electrode reacts with proton, and then, water is generated at this oxidization reaction. Water molecule proceeds to counter electrode, and is reduced at counter electrode by generated current of this serial reaction. Total reaction is in the below described. NO2 gas concentration is proportional to the current that is generated by this serial reaction.

Specifications:

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