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A screen-printed amperometric dissolved oxygen sensor utilising an immobilised electrolyte gel and membrane

A screen-printed amperometric dissolved oxygen sensor utilising an immobilised electrolyte gel and membrane
A screen-printed amperometric dissolved oxygen sensor utilising an immobilised electrolyte gel and membrane
An amperometric dissolved oxygen sensor based on potentiostatic operation has been designed and fabricated using thick film technology. Calibration of the sensor has shown a strong linear relationship with dissolved oxygen concentration. The devices have been bulk tested for long-term stability and good device to device repeatability has been observed within the batch. Results indicate that a repeatable response to dissolved oxygen levels can be obtained over a period of several months when intermittently powered. The device has been found to operate efficiently for at least 2 weeks when it is continuously powered in deionised water. Silver and copper deposits have been identified on the working electrode of such devices. It is shown that sensor failure occurs after 3 days when powered in tap water and that it is attributed to deposition on the membrane surface.
dissolved oxygen sensor, thick film sensor, membrane covered sensor, screen-printing, oxygen reduction, potentiostatic measurement
0925-4005
308-17
Glasspool, Wendy
018ec5e6-144b-4501-bac2-1ba64a5bb1ce
Atkinson, John
efc2b9a9-ba86-41e1-a8b7-b2b9ecdb3072
Glasspool, Wendy
018ec5e6-144b-4501-bac2-1ba64a5bb1ce
Atkinson, John
efc2b9a9-ba86-41e1-a8b7-b2b9ecdb3072

Glasspool, Wendy and Atkinson, John (1998) A screen-printed amperometric dissolved oxygen sensor utilising an immobilised electrolyte gel and membrane. Sensors and Actuators B: Chemical, 48 (1-3), 308-17. (doi:10.1016/S0925-4005(98)00063-X).

Record type: Article

Abstract

An amperometric dissolved oxygen sensor based on potentiostatic operation has been designed and fabricated using thick film technology. Calibration of the sensor has shown a strong linear relationship with dissolved oxygen concentration. The devices have been bulk tested for long-term stability and good device to device repeatability has been observed within the batch. Results indicate that a repeatable response to dissolved oxygen levels can be obtained over a period of several months when intermittently powered. The device has been found to operate efficiently for at least 2 weeks when it is continuously powered in deionised water. Silver and copper deposits have been identified on the working electrode of such devices. It is shown that sensor failure occurs after 3 days when powered in tap water and that it is attributed to deposition on the membrane surface.

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More information

Published date: 1998
Keywords: dissolved oxygen sensor, thick film sensor, membrane covered sensor, screen-printing, oxygen reduction, potentiostatic measurement

Identifiers

Local EPrints ID: 21135
URI: http://eprints.soton.ac.uk/id/eprint/21135
ISSN: 0925-4005
PURE UUID: 247059ed-fa0f-445b-981d-cd114424cfd6

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Date deposited: 06 Nov 2006
Last modified: 17 Mar 2021 17:30

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Contributors

Author: Wendy Glasspool
Author: John Atkinson

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