Development of an infrared sensor for on-line analysis of lubricant deterioration

Kudlaty, Katarzyna; Purde, A.; Koch, Alexander W.

doi:10.1109/icsens.2003.1279074

Cited by 11 publications

(7 citation statements)

References 6 publications

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“…Kudlaty et al showed an IR absorption sensor employing attenuated total reflection (ATR). 10,11 Their approach is based on a single element pyroelectric infrared detector and a rotating chopper disc with integrated narrow bandpass filters. In summary, ND sensor systems are of low-cost, robust against vibration, and perform well in some special purpose applications.…”

Section: Non-dispersive (Nd) Sensor Systemsmentioning

confidence: 99%

Linear variable filter based oil condition monitoring systems for offshore windturbines

Wiesent¹,

Dorigo²,

Simsek³

et al. 2011

SPIE Proceedings

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A major part of future renewable energy will be generated in offshore wind farms. The used turbines of the 5 MW class and beyond, often feature a planetary gear with 1000 liters lubricating oil or even more. Monitoring the oil aging process provides early indication of necessary maintenance and oil change. Thus maintenance is no longer time-scheduled but becomes wear dependent providing ecological and economical benefits. This paper describes two approaches based on a linear variable filter (LVF) as dispersive element in a setup of a cost effective infrared miniature spectrometer for oil condition monitoring purposes. Spectra and design criteria of a static multi-element detector and a scanning single element detector system are compared and rated. Both LVF miniature spectrometers are appropriately designed for the suggested measurements but have certain restrictions. LVF multi-channel sensors combined with sophisticated multivariate data processing offer the possibility to use the sensor for a broad range of lubricants just by a software update of the calibration set. An all-purpose oil sensor may be obtained.

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Section: Non-dispersive (Nd) Sensor Systemsmentioning

confidence: 99%

Linear variable filter based oil condition monitoring systems for offshore windturbines

Wiesent¹,

Dorigo²,

Simsek³

et al. 2011

SPIE Proceedings

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“…Jedoch hä ngen diese Parameter von vielen Einflussfaktoren ab, wodurch die Interpretation des Messwerts erschwert wird. Mit Infrarot-Sensoren wie in (Agoston et al, 2008;Kudlaty, Purde, Koch, 2003;Van De Voort et al, 2006) (Agoston, Svasek, Jakoby, 2005;Agoston, Doerr, Jakoby, 2007; Nach diesen Herstellungsprozessen wurden die hergestellten Korrosionssensoren mit einem Schutzlack ü berzogen, um eine Passivierung der Metalloberflä che durch die Luft wä hrend der Lagerung zu minimieren.…”

Section: Einfü Hrungunclassified

Online-Ölzustandsüberwachung mit chemischen Korrosionssensoren

Schneidhofer

Dörr

2009

Elektrotech. Inftech.

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Ch. Schneidhofer, N. Dö rr Die Versä uerung ist ein wichtiger Parameter bei der Auswertung des Zustands von Schmierstoffen, insbesondere bei stationä ren Motoren, welche mit Biogas betrieben werden. Einige Kontaminationen im Biogas, beispielsweise Schwefelwasserstoff, bilden wä hrend des Verbrennungsprozesses aggressive Verbindungen. Im betrachteten Anwendungsgebiet wird die Versä uerung des Motorö ls als wesentlicher Parameter fü r den Ö lwechsel angesehen, da saure Verbindungen gegebenenfalls Korrosion von Motorkomponenten verursachen kö nnen. Jedoch muss ein hohes Maß an Versä uerung nicht zwangsweise Korrosion verursachen. Hierfü r wird ein chemischer Korrosionssensor zur Online-Ü berwachung der Korrosivitä t von Motorö len vorgestellt. Dieses Sensorkonzept basiert auf dem Materialverlust von dü nnen Metallstreifen aufgrund von Korrosion. Der Materialverlust wird durch die Messung des elektrischen Widerstands beobachtet. Die Ergebnisse von Korrosionssensoren, welche online in stationä ren Gasmotoren getestet wurden, werden vorgestellt. Hierbei konnte wie erwartet ein Zusammenhang der Versä uerung des Schmierstoffes mit den Ergebnissen des Korrosionssensors hergestellt werden. Weiters zeigten die verwendeten Metalle unterschiedliche Sensitivitä t gegenü ber korrosivem Angriff. Das Konzept des Korrosionssensors eignet sich daher besonders als Vorwarnstufe bei der Online-Ö lzustandsü berwachung in Gasmotoren. Schlü sselwö rter: Korrosion; Korrosionssensor; Ö lzustandsü berwachung; WiderstandsauswertungOnline oil condition monitoring using chemical corrosion sensors.The knowledge of the degree of acidification is of crucial importance to evaluate the condition of lubricating oils, in particular in stationary engines driven by gaseous biofuels. Some contaminants of such biofuels, e.g. hydrogen sulfide, form aggressive compounds during the combustion process. In the reported field of application, acidification is considered as the main indicator for an oil change. In some cases, oil acidification results in the corrosion of engine parts. On the other hand, a high degree of acidification does not necessarily cause corrosion. For this reason, the online monitoring of the engine oil's corrosiveness by means of a chemical corrosion sensor is proposed. This sensor concept is based on material loss of a thin metal film due to corrosion. The metal films are prepared from selected metals. The material loss is monitored electrically by measuring the resistance of the metal films. The usefulness of the proposed sensor concept is illustrated by results from corrosion sensors tested online in stationary gas engines. As expected, a relationship between the acidification of the lubricant and the results obtained with the corrosion sensors can be shown. Further, the metals used showed different sensitivity towards corrosive attack. This corrosion sensor concept proved to be applicable for pre-warning when installed as an online condition monitoring sensor in gas engines.

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“…Infrared (IR) spectroscopic principles have proven successful in determining different parameters associated with oil degradation, thus creating a more complete prediction of the oil condition [ 7 , 8 , 9 ]. As infrared spectrometers are relatively expensive and are usually not robust enough to be operated in industrial environments, approaches that use non-dispersive infrared (NDIR) measurement setups have been made to monitor additive depletion [ 10 ] or oil oxidation [ 11 ]. NDIR setups for monitoring phosphate-ester hydraulic fluid [ 12 , 13 ], gas engine oil [ 14 ], and diesel engine oil [ 15 ] have been presented.…”

Section: Introductionmentioning

confidence: 99%

Non-Dispersive Infrared Sensor for Online Condition Monitoring of Gearbox Oil

Rauscher

Tremmel

Schardt

et al. 2017

Sensors

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The condition of lubricating oil used in automotive and industrial gearboxes must be controlled in order to guarantee optimum performance and prevent damage to machinery parts. In normal practice, this is done by regular oil change intervals and routine laboratory analysis, both of which involve considerable operating costs. In this paper, we present a compact and robust optical sensor that can be installed in the lubrication circuit to provide quasi-continuous information about the condition of the oil. The measuring principle is based on non-dispersive infrared spectroscopy. The implemented sensor setup consists of an optical measurement cell, two thin-film infrared emitters, and two four-channel pyroelectric detectors equipped with optical bandpass filters. We present a method based on multivariate partial least squares regression to select appropriate optical bandpass filters for monitoring the oxidation, water content, and acid number of the oil. We perform a ray tracing analysis to analyze and correct the influence of the light path in the optical setup on the optical parameters of the bandpass filters. The measurement values acquired with the sensor for three different gearbox oil types show high correlation with laboratory reference data for the oxidation, water content, and acid number. The presented sensor can thus be a useful supplementary tool for the online condition monitoring of lubricants when integrated into a gearbox oil circuit.

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Development of an infrared sensor for on-line analysis of lubricant deterioration

Cited by 11 publications

References 6 publications

Linear variable filter based oil condition monitoring systems for offshore windturbines

Linear variable filter based oil condition monitoring systems for offshore windturbines

Online-Ölzustandsüberwachung mit chemischen Korrosionssensoren

Non-Dispersive Infrared Sensor for Online Condition Monitoring of Gearbox Oil

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