Fiber optic level sensor for humidifier

Details Fiber optic level sensor for humidifier Fiber optic level sensor for humidifier

1985-03-20

1986-12-23

Yasich, Daniel M.

Measuring and testing

Liquid level or depth gauge

With illumination

261 1, 356440, G01F 2302

Patent

active

046304754

ABSTRACT:
An apparatus such as a humidifier comprises a water storage tank having an externally exposed surface made of a transparent material and its bottom surface is made partially or totally of a transparent plate. A light source is disposed underneath this transparent plate and there is placed inside the tank a structure having surfaces for reflecting or refracting light from this source to the aforementioned externally exposed surface so that the water level inside the tank is easily visible.

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patent: 4303601 (1981-12-01), Grimm et al.
patent: 4441027 (1984-04-01), Richardson et al.

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