Liquid level detector and method for a vapor deposition containe

Details Liquid level detector and method for a vapor deposition containe Liquid level detector and method for a vapor deposition containe

1988-07-19

1990-02-13

Cuchlinski, Jr., William A.

Measuring and testing

Liquid level or depth gauge

With illumination

340619, G01F 2302

Patent

active

048995851

ABSTRACT:
An optical probe is sealingly mounted in an access port of a pressurized container. The probe comprises a glass rod of a predetermined thickness having a conical end tip. An optical transmitter and receiver is connected to the glass rod. The fiber optic transmitter and receiver sends visible red light down the glass rod. When the liquid level inside the container drops below the end tip of the glass rod, reflected light will be received from the glass rod and detected.

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patent: 4713552 (1987-12-01), Denis et al.
patent: 4782226 (1988-11-01), Jeffries et al.

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