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Device and method for indicating liquid level

A technology for indicating liquid and liquid level, which is applied in the field of liquid level indicating devices, and can solve problems such as complex manufacturing costs

Active Publication Date: 2020-11-20
HEWLETT PACKARD DEV CO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of these devices can be complex and expensive to manufacture

Method used

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  • Device and method for indicating liquid level
  • Device and method for indicating liquid level
  • Device and method for indicating liquid level

Examples

Experimental program
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Embodiment Construction

[0027] Many existing devices currently used to sense the level of a liquid within a volume can be relatively complex and expensive to manufacture. For example, many currently available liquid level sensing devices use expensive components and expensive materials. Many of the currently available liquid level sensing devices involve dedicated and complex manufacturing processes.

[0028] The present disclosure describes various exemplary level sensing liquid interfaces that are less expensive to manufacture. As will be described below, in some embodiments, the disclosed level sensing liquid interface facilitates the use of materials with a wide range of temperature coefficients of resistance. In some embodiments, the disclosed level sensing liquid interface is well suited for sensing the level of other corrosive liquids without the use of typically more expensive corrosion resistant materials.

[0029] FIG. 1 shows an exemplary liquid interface 24 for a liquid level sensor. L...

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Abstract

An example provides a sequence of heaters supported at different depths within the volume. An array of temperature sensors is supported at various depths within the volume. The temperature sensor outputs a signal indicative of the heat dissipated from the heater to indicate the level of liquid within the volume.

Description

technical field [0001] The invention relates to a device and a method for indicating a liquid level. Background technique [0002] Various devices are currently employed to sense the level of liquid within a volume. Some of these devices can be complex and expensive to manufacture. Contents of the invention [0003] According to one embodiment, the present invention provides a device for indicating a liquid level comprising: an elongated strip extending into a volume containing a liquid; a heater along and supported by said strip a sequence of said heaters each located at a different depth within said volume; and a sequence of temperature sensors along and supported by said strip, each said temperature sensor located within said volume at different depths, wherein the temperature sensor outputs a signal indicative of heat dissipated from the heater to indicate the level of the liquid within the volume, wherein the heater and the temperature sensor are arranged is an arr...

Claims

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Application Information

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IPC IPC(8): G01F23/22G01K13/00
CPCB41J2/17513B41J2/17566B41J2/195G01F23/247G01F23/22H05B3/82G01F23/248G01F23/246G01K13/02B41J2002/17579
Inventor M·W·库姆比R·N·K·布朗宁
Owner HEWLETT PACKARD DEV CO LP