Potential separation for filling level radar
First Claim
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1. A filling level radar with potential separation to determine a filling level in a tank, the filling level radar comprising:
- an antenna for transmitting or receiving electromagnetic waves;
a feed device for feeding the electromagnetic waves to the antenna;
a separation element for insulating the feed device from the antenna;
wherein the separation element comprises a recess in a longitudinal direction of the feed device; and
wherein the separation element comprises a region of overlap for overlapping in longitudinal direction at least one of the feed device or the antenna.
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Abstract
For safety reasons the potential of an electrical supply line of a radar sensor should be separate from the potential of the filling level container. An arrangement for potential separation for a filling level radar includes a separation element for insulating the waveguide from the antenna. The separation element, corresponding to the cross section of the waveguide, is ring shaped. In this way rotatability between the sensor housing and the antenna subassembly is provided without influencing the signal line between the antenna and the waveguide.
29 Citations
25 Claims
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1. A filling level radar with potential separation to determine a filling level in a tank, the filling level radar comprising:
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an antenna for transmitting or receiving electromagnetic waves;
a feed device for feeding the electromagnetic waves to the antenna;
a separation element for insulating the feed device from the antenna;
wherein the separation element comprises a recess in a longitudinal direction of the feed device; and
wherein the separation element comprises a region of overlap for overlapping in longitudinal direction at least one of the feed device or the antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An antenna for transmitting or receiving electromagnetic waves;
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wherein the antenna comprises a separation element to insulate the antenna from a feed device;
wherein the feed device is designed to feed the electromagnetic waves to the antenna;
wherein the separation element comprises a recess in longitudinal direction of the waveguide; and
wherein the separation element comprises a region of overlap for overlapping in longitudinal direction at least the feed device or the antenna. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A method to determine the filling level in a tank, the method comprising the following steps:
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feeding electromagnetic waves to an antenna by way of a feed device;
transmitting or receiving the electromagnetic waves by way of an antenna;
insulating the feed device from the antenna by way of a separation element;
wherein the separation element comprises a recess in longitudinal direction of the feed device; and
wherein the separation element comprises a region of overlap for overlapping in longitudinal direction at least the feed device or the antenna. - View Dependent Claims (24, 25)
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Specification