【発明の名称】充填状態測定装置

Japanese Patent JPH0674995

B2

PURPOSE: To prevent overflow by constituting so that a spacing from a bi-directional electroacoustic converter to the surface of a filling material approaches a distance that is equal to two times the travel of a sound pulse in a given time interval in a given filled state. CONSTITUTION: The relationship between spacing B and A from a converter 9 to a sensing head 22 and a reference reflection body 14 is expressed by B>A, and a reciprocating time of sound pulses reflected on a surface 4 when the surface 4 of a filling material 1 contacts the head 22 is selected to time that is equal to or less than a time interval where the vibration of the converter 9 stops after excitation due to excitation caused by electrical transmission signals or the reflected sound pulses. When the surface 4 reaches the head 22 and the area between electrodes continues, a Schmitt trigger 28 is operated and an oscillator 29 is turned on. A time measuring device 17 detects the time interval between pulses that are supplied from a smaller oscillator 29 than a specific time interval while the converter 9 is at halt. Similarly, with the response threshold of an operation device 20, the device 20 turns on a filling material carrier body 6 in response to the measurement value and discharges the material 1, thus preventing leakage from a container 2. At the same time, an alarm 7 is turned on.

Kairiskov Nielsen
Paul Berghe Juhl Nielsen

JP27142889A

September 21, 1994

October 18, 1989

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Danfoss Aksersker Kabet

G01F23/24; G01F23/296; G01S15/88; G05D9/12; G01F23/28; (IPC1-7): G01F23/28; G01S15/88; G05D9/12

Minoru Nakamura (8 outside)

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