The Stannic Oxide Gas Sensor presents a comprehensive overview of the background science and technology of the subject, including practical information on its applications and the electronic circuits with which it is associated. The book explains the chemistry of the device and covers typical methods of fabrication. Sensitivity and selectivity are addressed, and the problems of drift with ambient temperature, relative humidity, and time are fully discussed.
The book also presents examples of industrial, commercial, and domestic applications. It explains the design of appropriate electronic circuits and describes methods for testing and characterizing sensors. Advantages and disadvantages of sensors are assessed as well.
Introduction 1.1 The Metal Oxide Gas Sensor 1.2 The Nature of Sensors -- 1.3 Early Gas Sensors 1.4 A Historical Note -- 1.5 Current Research and Development 1.6 The Taguchi Gas Sensor References Chapter 1 Fabrication of the Stannic Oxide Ceramic Sensor 1.1 Preparation of Stannic Oxide Powder -- 1.2 Gas Sensor Fabrication 1.3 The Binder and Sintering Process -- 1.4 The Final Active Material 1.4.1 Relationship between Stannic Oxide Crystal Size and -- Sensor Characteristics 1.4.2 The Sintered State of Stannic Oxide Ceramic 1.5 Basic Electrical Characterisation -- 1.5.1 Volt-Ampere Characteristics 1.5.2 Polarity -- 1.6 Basic Electrical Circuitry -- References Chapter 2 The Performance of the Stannic Oxide Ceramic Sensor 2.1 Conductivity versus Gas Concentration Characteristics -- 2.1.1 Gas Concentration Characteristics -- 2.1.2 Response Speeds 2.2 Sensitivity Variation with Temperature 2.2.1 Sensor Temperature Characteristics 2.2.2 Response Speeds Further Observations -- 2.3 The Effects of Oxygen Partial Pressure and Humidity -- 2.3.1 Oxygen Partial Pressure -- 2.3.2 Water Vapor -- 2.4 The Effects of Variations in Preparation Modalities 2.4.1 The Effects of Calcining Conditions -- 2.4.2 The Effects of Sintering Conditions 2.5 The Mecló´