The second volume of Handbook of Humidity Measurement "Electronic and Electrical Humidity Sensors" is entirely devoted to the consideration of different types of solid-state devices which can be used for humidity measurement.

Introduction in Humidity Sensors. Introduction in electronic and electrical humidity sensors. Conventional Methods and Brief History of Humidity Measurements. Gravimetric method of humidity measurement. Mechanical (hair) hygrometer. Psychrometer. Chilled mirror hygrometer or mirror-based dew-point sensors. Heated salt-solution method for humidity measurement. Electrolytic or coulometric hygrometers. Humidity measurement based on Karl Fischer titration. Other conventional methods of humidity measurement. Electronic and Electrical Humidity Sensors and Basic Principles of their Operation. ¿apacitance-based humidity sensors. Resistive humidity sensors. Gravimetric humidity sensors. Cantilever- and membrane-based humidity sensors. Thermal conductivity-based hygrometers. Field ionization humidity sensors. Humidity sensors based on thin film and field-effect transistors. Hetero-junction-based humidity sensors. Kelvin probe as a humidity sensor. Solid state electrochemical humidity sensors. New Trends and Outlook. Microwave-based humidity sensors. Integrated humidity sensors. Humidity sensors on flexible substrate. Non-traditional approaches to humidity measurement. Summary and outlook.