An investigation of factors influencing the response of screen printed thick film electrochemical sensors in the monitoring of lubrication oil ageing
An investigation of factors influencing the response of screen printed thick film electrochemical sensors in the monitoring of lubrication oil ageing
Based on condition based maintenance (CBM), oil can be replaced according to its measured status or in-situ with online monitoring systems. The acidity of oil, e.g. the total acid number (TAN), is an important parameter to evaluate lubricant ageing. Previous studies have shown the feasibility of thick film (TF) sensors based on ion selective electrodes (ISE) for the detection of engine oil acidity changes due to oxidation. Further study has shown the TF sensors generally have very long response times due to the extremely low conductivity of oils. This work focuses on the effect on the sensor response time and accuracy caused by introducing metal particles in oil, and the influence of water content in the oil. Two types of TF working electrodes (WE) have been tested and TAN was measured for each oil sample. The results show glass-based TF sensors can work under high temperature up to 120 °C and the metal particles in the oil can help to reduce the sensor response time significantly. It was also found that the presence of water in the oil has a minor influence on the voltage output of the TF sensor but can be helpful in the ionization and detection mechanism of H+.
Atkinson, John
5e9729b2-0e1f-400d-a889-c74f6390ea58
Wang, Ling
c50767b1-7474-4094-9b06-4fe64e9fe362
Yang, Kun
549bfa5f-6ddf-4eb7-a957-7e4902705121
April 2019
Atkinson, John
5e9729b2-0e1f-400d-a889-c74f6390ea58
Wang, Ling
c50767b1-7474-4094-9b06-4fe64e9fe362
Yang, Kun
549bfa5f-6ddf-4eb7-a957-7e4902705121
Atkinson, John, Wang, Ling and Yang, Kun
(2019)
An investigation of factors influencing the response of screen printed thick film electrochemical sensors in the monitoring of lubrication oil ageing.
Sensing and Bio-Sensing Research, 23, [100273].
(doi:10.1016/j.sbsr.2019.100273).
Abstract
Based on condition based maintenance (CBM), oil can be replaced according to its measured status or in-situ with online monitoring systems. The acidity of oil, e.g. the total acid number (TAN), is an important parameter to evaluate lubricant ageing. Previous studies have shown the feasibility of thick film (TF) sensors based on ion selective electrodes (ISE) for the detection of engine oil acidity changes due to oxidation. Further study has shown the TF sensors generally have very long response times due to the extremely low conductivity of oils. This work focuses on the effect on the sensor response time and accuracy caused by introducing metal particles in oil, and the influence of water content in the oil. Two types of TF working electrodes (WE) have been tested and TAN was measured for each oil sample. The results show glass-based TF sensors can work under high temperature up to 120 °C and the metal particles in the oil can help to reduce the sensor response time significantly. It was also found that the presence of water in the oil has a minor influence on the voltage output of the TF sensor but can be helpful in the ionization and detection mechanism of H+.
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Accepted/In Press date: 5 March 2019
e-pub ahead of print date: 6 March 2019
Published date: April 2019
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Local EPrints ID: 429262
URI: http://eprints.soton.ac.uk/id/eprint/429262
ISSN: 2214-1804
PURE UUID: ac8cb479-f3a3-4b78-898e-1fe7b24b949e
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Date deposited: 25 Mar 2019 17:30
Last modified: 16 Mar 2024 03:24
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Author:
Kun Yang
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