Level detector for a material in a container
First Claim
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1. A level detector, comprising:
- a rod probe for positioning at least partially within a container suitable for containing a material, the rod probe having first and second ends;
a monitoring device coupled with the first end of the rod probe, and the second end being positionable at a preselected reference level within the container;
the rod probe and the monitoring device being electrically coupled and cooperating to form a portion of an electrical circuit;
the electrical circuit being configured to produce an oscillating frequency in response to an electrical coupling being formed between the electrical circuit and a human body; and
wherein the oscillating frequency is equal to a first value if a height of the material is below the reference level, and the oscillating frequency is equal to a second value if the height of the material is above the reference level.
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Abstract
A level detector includes a rod probe for positioning at least partially within a container suitable for containing a material. The rod probe has first and second ends. A monitoring device is coupled with the first end of the rod probe. The monitoring device is operable to produce a reading when a ground connector contacts the monitoring device. The reading is based upon whether the second end of the rod probe contacts the material. The reading may also be based upon an electrical impedance of the material when the second end of the rod probe contacts the material.
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Citations
20 Claims
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1. A level detector, comprising:
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a rod probe for positioning at least partially within a container suitable for containing a material, the rod probe having first and second ends;
a monitoring device coupled with the first end of the rod probe, and the second end being positionable at a preselected reference level within the container;
the rod probe and the monitoring device being electrically coupled and cooperating to form a portion of an electrical circuit;
the electrical circuit being configured to produce an oscillating frequency in response to an electrical coupling being formed between the electrical circuit and a human body; and
wherein the oscillating frequency is equal to a first value if a height of the material is below the reference level, and the oscillating frequency is equal to a second value if the height of the material is above the reference level. - View Dependent Claims (2, 3, 4, 5, 6)
wherein the rod probe is positioned within an isolation grommet; - and
wherein the isolation grommet is coupled to the container at an opening of the container.
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4. The level detector of claim 1, wherein the monitoring device comprises a light-emitting diode (LED) operable to display a reading that corresponds to the oscillating frequency.
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5. The level detector of claim 1, wherein the monitoring device comprises at least part of an oscillation circuit.
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6. The level detector of claim 1, wherein the material is liquid-propane gas.
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7. A level detector, comprising:
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a rod probe for positioning at least partially within a container suitable for containing a material, the rod probe having first and second ends;
a monitoring device coupled with the first end of the rod probe, the monitoring device comprising at least part of a circuit;
the circuit being configured such that an electrical coupling with a human body provides a ground that completes the circuit, the circuit having a frequency; and
wherein the monitoring device is operable to produce a reading corresponding to the frequency of the circuit. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method for detecting a level of a material in a container, comprising:
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positioning a rod probe at least partially within a container, the rod probe having first and second ends such that the second end of the rod probe is disposed at a predetermined reference level;
connecting a monitoring device to the first end of the rod probe wherein the rod probe and the monitoring device are electrically coupled and form at least part of an electrical circuit;
selectively completing the circuit by forming an electrical coupling between the monitoring device and a human body to produce a reading of the monitoring device; and
inserting material into the container until the reading changes value based upon contact between the material and the second end of the rod probe. - View Dependent Claims (16, 17, 18, 19, 20)
the circuit has a frequency; and
the reading is related to the frequency of the circuit.
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19. The method of claim 18, wherein the frequency is related to an electrical impedance of the circuit.
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20. The method of claim 19, wherein the electrical impedance of the circuit changes when the second end of the rod probe contacts the material.
Specification