초록 ▼

A liquid sensing assembly (10) senses the level of liquid (18) in a container (12). The assembly (10) includes a reference sensing capacitor (16) for sensing the dielectric constant of the liquid and a level sensing capacitor (14) for sensing the level of the liquid with a dielectric factor. A housi

A liquid sensing assembly (10) senses the level of liquid (18) in a container (12). The assembly (10) includes a reference sensing capacitor (16) for sensing the dielectric constant of the liquid and a level sensing capacitor (14) for sensing the level of the liquid with a dielectric factor. A housing (20) forms one plate of the capacitors (14, 16), and two separate coiled wires form the second plates of the capacitors (14, 16). The capacitors (14, 16) are located within the housing (20) and separated by a seal (46) to prevent liquid from passing therethrough. The reference capacitor (16) is located in the upper end (28) of the housing (20) and receives the liquid directly at an inlet (52) and fills to overflow at an outlet (56) into the container (12). The level capacitor (16) is in the lower section of the housing (20) to sense the level in the container (12).

대표청구항 ▼

A level sensing assembly for sensing the level of liquid in a surrounding container, said assembly comprising; level sensing means (14) and reference sensing means (16) for sensing the level of liquid in a container (12), housing means (20) for supporting said level sensing means (14) and said refer

A level sensing assembly for sensing the level of liquid in a surrounding container, said assembly comprising; level sensing means (14) and reference sensing means (16) for sensing the level of liquid in a container (12), housing means (20) for supporting said level sensing means (14) and said reference sensing means (16), sealing means (32) within said housing means (20) between said level sensing means (14) and said reference sensing means (16) for preventing the flow of liquid therebetween, said housing means (20) comprising a longitudinally extending hollow cylinder (22) having first (28) and second (30) ends spaced longitudinally apart, said hollow cylinder (22) including a first section (24) at said first end (28) and a second section (26) at said second end (30) with said sealing means (32) therebetween, said reference sensing means (16) being disposed in said first section (24) and said level sensing means (14) being disposed in said second section (26) spaced longitudinally from said reference sensing means (16) for placement in liquid in the container (12).