Measurement of refractivity changes

Details Measurement of refractivity changes Measurement of refractivity changes

G - Physics

01

N

73/58

G01N 21/41 (2006.01)

Patent

CA 1141192

ABSTRACT OF THE DISCLOSURE 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 dischar- ging its capacitor.

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