MEASUREMENT OF REFRACTIVITY CHANGES

Adverse effect of light source movement on test cell readout is avoided by sweeping the source back and forth and electronically processing the output; improved cell temperature control is provided by heat exchange between cell inlet and cell outlet streams; more light for improved performance is su...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CARSON, WILLIAM W, ROE, JOHN S
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	Adverse effect of light source movement on test cell readout is avoided by sweeping the source back and forth and electronically processing the output; improved cell temperature control is provided by heat exchange between cell inlet and cell outlet streams; more light for improved performance is supplied by reflecting light leaving the cell chamber back into it; an integral lens is provided to further improve lighting; accurate zeroing is had by causing any change in light intensity during measurement to equally affect both outputs being compared; and shortening analog circuit response by discharging its capacitor.