Thick film temperature sensors
Abstract
Possible applications of thick film materials as temperature sensors are described. A thermal-resistance layer of the heat flux sensor was made from multilayer dielectric materials, based on a mixture of glass, ceramic, and crystalizable glass. Temperature difference was measured with thermocouples made of thick-film conductors. A prototype of a sensing element for true RMS meter was designed. The temperature gradient along the ceramic substrate was measured by thick-film thermocouples. The transfer function of the RMS meter was found to be relatively independent of ambient temperature. A temperature coupler is an element with electrically isolated and thermally coupled thick-film resistors. A thick-film multilayer dielectric with high heat conductivity was used to separate the heating and the sensing resistors. The delay time and the maximum signal transfer frequency for different material combinations were evaluated.
- Publication:
-
Elektrotehniski Vestnik
- Pub Date:
- December 1990
- Bibcode:
- 1990EVest..57..331H
- Keywords:
-
- Dielectrics;
- Film Thickness;
- Glass;
- Temperature Sensors;
- Thermal Resistance;
- Aluminum Oxides;
- Heat Flux;
- Substrates;
- Temperature Gradients;
- Thermocouples;
- Transfer Functions;
- Instrumentation and Photography