Adjustable measurement head and a level measurement device and method employing it
AssigneeVEGA Grieshaber KG
InventorDieter Haas
Life of this patent
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Abstract
A measurement head for a device for measuring the level of a product in a container comprises a transmitter/receiver unit to transmit a scanning signal and receive an echo of the scanning signal returned by the product, a fastening element to fasten the transmitter/receiver unit to a support and at least one actuator to move the transmitter/receiver unit relative to the fastening element.
Claims16
Measurement head for a device for measurement of the level of a product, with a transmitter/receiver unit to emit a scanning signal and receive an echo of the scanning signal returned by the product and a fastening element to fasten the transmitter/receiver unit to a support, characterized by:
- at least one actuator to move the transmitter/receiver unit relative to the fastening element;
- a control unit to operate said at least one actuator;
- wherein said control unit is set up to evaluate a quality of the echo signal received in a stipulated position and to operate the actuator to vary the position, if the quality is evaluated as deficient.
Method for measurement of a level by means of a measurement head with the steps:
- a) transmitting of a scanning signal and receiving of a returned echo,
- b) evaluation of a quality of the returned echo,
- c) if the quality is evaluated as deficient, variation of a position of the measurement head and repetition of steps a) to c);
- otherwise
- d) evaluation of the echo and furnishing of a measured value.
Dependencies are inferred from the claim text.