Title :
Use of a temperature-sensitive ferrite for temperature/humidity measurements
Author :
Seki, Kyoshiro ; Shida, Jun-ichi ; Murakami, Koichi
Author_Institution :
Dept. of Electr. Eng., Iwate Univ., Morioka, Japan
fDate :
9/1/1988 12:00:00 AM
Abstract :
A temperature-sensitive ferrite (TSF) is a multi-ability sensor, which adds the functions of a thermistor and a switching diode to the temperature-sensitive magnetic core. The TSF has a humidity dependence which causes the resistance to decrease with a rise in humidity. Magnetic reluctance is temperature-dependent and is independent of humidity. Techniques for converting temperature and humidity into frequencies are discussed
Keywords :
electric sensing devices; ferrite applications; humidity measurement; temperature measurement; humidity dependence; humidity frequency conversion; multi-ability sensor; switching diode; temperature frequency conversion; temperature-sensitive ferrite; temperature-sensitive magnetic core; temperature/humidity measurements; thermistor; Diodes; Ferrites; Frequency conversion; Humidity; Magnetic cores; Magnetic sensors; Magnetic switching; Temperature sensors; Thermal sensors; Thermistors;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
