A capacitive-type humidity sensor using crosslinked poly(methyl methacrylate-co-(2 hydroxypropyl)-methacrylate)

• Published in: Sensors and actuators. B, Chemical Vol. 25; no. 1; pp. 710 - 713
• Main Authors: Roman, Cecilia, Bodea, Olimpiu, Prodan, Nicolae, Levi, Andrei, Cordos, Emil, Manoviciu, Ionel
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Lausanne Elsevier B.V 1995; Amsterdam Elsevier; New York, NY
• Subjects: Capacitive-type sensors; Exact sciences and technology; General equipment and techniques; Humidity sensors; Hygrometers; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Physics; Polymers; Q1; Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing; Vapors; Polymers; Capacitive-type sensors; Humidity sensors
• ISSN: 0925-4005; 1873-3077
• DOI: 10.1016/0925-4005(95)85157-7

A capacitive-type humidity sensor has been manufactured using crosslinked poly(methyl methacrylate-co-(2 hydroxypropyl)-methacrylate) as sensing material. The sensitivity, response time and durability of the sensor against acetone vapour have been measured. The sensor is tested with a measurement cycle as follows: 12% RH (1 h)-75% RH (1 h)-95% RH (16 h)-75% RH 1 h)-12% (1 h), and it shows good sensitivity, short response time, low hysteresis and durability against acetone vapour.