Sensor for determining liquid level in a container

Details Sensor for determining liquid level in a container Sensor for determining liquid level in a container

1988-10-18

1990-09-25

Yasich, Daniel M.

Measuring and testing

Liquid level or depth gauge

340621, 367908, G01F 2328

Patent

active

049585185

ABSTRACT:
A rod shaped or tubular housing for a sensor includes an interior space provided with upper and lower compensating openings and within which an ultrasound measured distance device. Below the ultrasound measured distance device, the interior is connected to the lower compensating opening through a narrow channel proceeding in an axial direction of the housing. The housing is formed of two half shells of plastic joined to one another whose wall parts engage into one another to form the narrow channel. The ultrasound transducers and the electrical leads are embedded into the half shells. A second ultrasound measured distance device which is in direct communication with the surrounding space may be provided above the interior space. The ultrasound transducer of the measured distance device is excited to transmit in a pulsed fashion.

REFERENCES:
patent: 3930218 (1975-12-01), Hall, Jr.
patent: 4063457 (1977-12-01), Zekulin et al.
patent: 4374477 (1983-02-01), Kikuchi et al.
patent: 4432231 (1984-02-01), Napp et al.
patent: 4507583 (1985-03-01), Jensen et al.

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