Fluid detection
AssigneeWelldata (Subsurface Surveillance Systems) Ltd.
InventorSydney Joseph Littleford
Life of this patent
Estimating the term…
Abstract
A material level detection device for detecting a material level includes a cable or transmission line having a coaxial cable and an electromagnetic transmitter and receiver arrangement connected or connectable to the cable or transmission line. The cable or transmission line acts as an antenna and includes an inner conductor and an outer conductor having a plurality of apertures or slots provided in a spaced relation along at least part of a length of the outer conductor. The inner conductor is provided within the outer conductor. The cable or transmission line is configured as a radiating cable and/or a leaky feeder, or leaky cable or hybrid of a leaky cable with a standard/nonleaky cable. The transmitter and receiver arrangement is connected or connectable to the inner conductor.
Claims20
A material level detection device for detecting a material level, the detection device comprising a cable or transmission line comprising a coaxial cable and an electromagnetic transmitter and receiver arrangement connected or connectable to the cable or transmission line;
- wherein
- the cable or transmission line acts as an antenna, and comprises:
- an inner conductor;
- an outer conductor comprising a plurality of apertures or slots provided in a spaced relation along at least part of a length of the outer conductor;
- the inner conductor being provided within the outer conductor;
- wherein
- at least part of the cable or transmission line is configured as at least one of:
- a radiating cable (RC), a leaky cable, and a hybrid of a leaky cable with a nonleaky cable;
- and
- the cable or transmission line is configured to propagate an electromagnetic signal from the electromagnetic transmitter and to propagate a reflection or reflections of the electromagnetic signal to the receiver for detecting the material level.
A material level detection device for detecting a material level, the detection device comprising a cable or transmission line comprising a coaxial cable and an electromagnetic transmitter and receiver arrangement connected or connectable to the cable or transmission line;
- wherein
- the cable or transmission line acts as an antenna, and comprises:
- an inner conductor;
- an outer conductor comprising one or more apertures or slots provided along at least part of a length of the outer conductor;
- the inner conductor being provided within the outer conductor;
- wherein
- the cable or transmission line is configured as at least one of:
- a radiating cable (RC), a leaky cable, and a hybrid of a leaky cable with a nonleaky cable;
- and
- the transmitter and receiver arrangement is connected or connectable to the inner conductor,
- wherein
- the detection device is configured to detect changes of impedance in the vicinity of the cable within a known radiating pattern and strength that will depend upon the frequency and dynamic range of the transmitted signal.
Dependencies are inferred from the claim text.