Title: Method of operating an optochemical sensor
Inventor : Vanoni, Claudio
Venturini, Francesca
Kleinlogel, Christoph
Patent submitter: Mettler Toledo AG
Issue Date: 11-Nov-2015
Language : English
Subjects : optical sensor, luminescence
Subject (DDC) : 620: Engineering
Abstract: An optochemical sensing device has source that emits radiation of a first and a second predetermined intensity, a detector, and a sensitive element that comprises a signal substance. To measure an analyte in a measurement medium, the sensitive element is contacted with the analyte. A first raw signal, which is dependent on the analyte content is obtained by exciting the signal substance with radiation of the first predetermined intensity. At a later time, a second raw signal is also obtained. A comparison of the raw signals yields a comparison value, which is compared against a predetermined limit value. If the comparison value exceeds the limit value, the radiation source is set at the first intensity. If the comparison value is smaller than the limit value, the radiation source is set at the lower second intensity.; Using the lower radiation intensity prolongs the life of the sensitive element.
Further description : Also published as: CN103140753 (A), CN103140753 (B), EP2625507 (A1), US2013295682 (A1), WO2012045580 (A1)
Departement: School of Engineering
Organisational Unit: Institute of Applied Mathematics and Physics (IAMP)
Publication type: Patent
Patentnumber : US9103795
metadata.zhaw.publication.code: B2
URI: https://digitalcollection.zhaw.ch/handle/11475/16067
Appears in Collections:Patente School of Engineering

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