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

✍ Scribed by Cecilia Roman; Olimpiu Bodea; Nicolae Prodan; Andrei Levi; Emil Cordos; Ionel Manoviciu

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 381 KB
• Volume: 25
• Category: Article
• ISSN: 0925-4005
• DOI: 10.1016/0925-4005(95)85157-7

✦ Synopsis

A capacitive-type humidity sensor has been manufactured using crosslinked poly(methy1 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% RH (1 h), and it shows good sensitivity, short response time, low hysteresis and durability against acetone vapour.