372 pages | 280 B/W Illus.
The first volume of The Handbook of Humidity Measurement focuses on the review of devices based on optical principles of measurement such as optical UV, fluorescence hygrometers, optical and fiber-optic sensors of various types. Numerous methods for monitoring the atmosphere have been developed in recent years, based on measuring the absorption of electromagnetic field in different spectral ranges. These methods, covering the optical (FTIR and Lidar techniques), as well as a microwave and THz ranges are discussed in detail in this volume. The role of humidity-sensitive materials in optical and fiber-optic sensors is also detailed. This volume describes the reasons for controlling the humidity, features of water and water vapors, and units used for humidity measurement.
PART 1: Introduction In Humidity Measurements. Water, water vapors and humidity.Why do we need to control humidity? Part 2: Humidity Monitoring using Absorption of Electromagnetic Radiation. Optical hygrometers. IR optical hygrometers. Atmosphere monitoring using methods of absorption of electromagnetic radiation. Atmosphere monitoring using methods of microwave absorption. GPS monitoring of atmospheric water vapor.Atmosphere monitoring using methods of absorption of electromagnetic radiation. LIDAR systems for atmosphere monitoring. Upper tropospheric and stratospheric water vapour control. Part 3: Optical and Fiber-Optic Humidity Sensors. Introduction in humidity measurement by optical and fiber-optic sensors. Optical and Fiber-Optic Humidity Sensors: General consideration. Absorption or colorimetric-based optical humidity sensors. Moisture indicators (3-1-2-1). Refractometry-based optical humidity sensors. Luminescence (fluorescence)-based humidity sensors. Interferometric humidity sensors. Microfiber-based humidity sensors. Humidity sensors based on special fibers. Surface Plasmon resonance-based humidity sensors. Lossy mode resonance based humidity sensors. Ellipsometry-based humidity sensors. Design and fabrication of optical and fiber-optic humidity sensors. Integrated humidity sensors. Outlook: State of the art and future prospects of optical and fiber-optic sensors.