Affiliation:
1. University of Belgrade
2. Institute of Security
3. IHTM
4. Ei Iritel
Abstract
An investigation path starting from (Mn,Ni,Co,Fe)3O4 nanometric powder preparation,
NTC thick-film characterization, realization and optimization of new planar thermistor geometries
to custom design thermistors and their application for temperature and volume airflow sensors was
recently determined. The aim was to make custom designed segmented NTC thermistors printed
and sintered on alumina. Two types of volume airflow sensors were formed: indirectly heated and
self-heated. A pair of segmented thermistors was placed in an air guide and connected to differential
branches of the Wheatstone bridge. A heater was placed in the middle between the thermistors for
the indirectly heated type, while for the self-heated type the same thermistors were self-heated by a
constant current source. First the thermistor responses vs. the airflow (calibration curves) were
measured, and then thermistor responses in time (inertia) to fast airflow changes from the minimum
to the maxi
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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