Browse Prior Art Database

Liquid Level Detector

IP.com Disclosure Number: IPCOM000096349D
Original Publication Date: 1963-Apr-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

Reeber, MD: AUTHOR

Abstract

This is a device for indicating when the level of a liquid in a vessel drops below a predetermined point.

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Liquid Level Detector

This is a device for indicating when the level of a liquid in a vessel drops below a predetermined point.

It consists of a standard, balanced Wheatstone bridge, one leg of which is formed by the probe shown above. This probe is placed in the liquid at the desired level.

The probe consists of a carbon resistor 10 mounted in a copper tube 12. The entire assembly, except for the rims of the copper tube, is encased in insulating material 14. By constructing the probe as indicated, heat flow from the resistor is greatly restricted. This restriction of the heat flow results in a marked increase in the sensitivity of the device, particularly when used with extremely low-temperature liquids.

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