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The low level measurement for determination air ion concentration

By Jan Šot

Abstract

This work deals with the possibilities of small current amplification to measure the concentration of air ions using the Aspiration condenser method. The work analyzes the connection containing precision operational amplifiers and the air ions measurement method. Two amplifiers, namely an instrumentation amplifier containing an integrated circuit INA116 recording the voltage drop on shunt and a current to voltage converter, have been designed and created to measure ion concentrations. The results of measurement show that using the instrumentation amplifier means lower measurement uncertainties of type A measurement than when using the current to voltage converter

Topics: Aspirační kondenzátor; integrační zesilovač.; převodník I/U; Aspiration condenser; operační zesilovač; instrumental amplifier; operation amplifier; přístrojový zesilovač; integration amplifier.; current-voltage converter
Publisher: Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií
Year: 2012
OAI identifier: oai:invenio.nusl.cz:243240
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