A guided wave level gauge which processes reflections from impedance transitions seen along a probe connected to the gauge. Determines the level based on reflections received from a surface of the material, end of the probe, a connection of the probe to the gauge, and a relative velocity (Vr) of propagation of the electromagnetic signal for the portion of the probe above the material surface to the portion of the probe below the surface. Determines the level without a surface reflection based on the end of probe reflection, probe to gauge connection reflection, relative velocity Vr, and an electrical length of the probe. The methods include determining the relative velocity Vr and the electrical length of the probe. The apparatus includes placing the probe on the outside surface of the tank. The apparatus includes jacketing the probe to improve the reflection received from the end of the probe.

A level measuring device is provided. The level measuring device can be configured to monitor the surface topology of a bulk material, and can include a sensor unit for scanning several areas of the bulk material surface and an evaluation unit for calculating the volumes under these areas.

A level measuring device is provided. The level measuring device can be configured to monitor the surface topology of a bulk material, and can include a sensor unit for scanning several areas of the bulk material surface and an evaluation unit for calculating the volumes under these areas.

A fill level measuring device for measuring the fill level of a liquid in a tank of a vehicle includes a multiband slotted waveguide antenna to be attached in the upper region of the tank, the antenna having a waveguide and multiple slots spaced apart, which are dimensioned differently, so that they have different resonance frequencies, to respectively emit radar waves having different frequencies. At least one radar transmitter can be coupled to the waveguide to feed the multiband slotted waveguide antenna with radar waves having the different resonance frequencies, and at least one radar receiver is provided for receiving reflected radar waves of different frequencies via the multiband slotted waveguide antenna. An evaluation unit is provided for detecting the fill level and the spatial distribution of the liquid in the tank based on the reflected radar waves.

A fill level measuring device for measuring the fill level of a liquid in a tank of a vehicle includes a multiband slotted waveguide antenna to be attached in the upper region of the tank, the antenna having a waveguide and multiple slots spaced apart, which are dimensioned differently, so that they have different resonance frequencies, to respectively emit radar waves having different frequencies. At least one radar transmitter can be coupled to the waveguide to feed the multiband slotted waveguide antenna with radar waves having the different resonance frequencies, and at least one radar receiver is provided for receiving reflected radar waves of different frequencies via the multiband slotted waveguide antenna. An evaluation unit is provided for detecting the fill level and the spatial distribution of the liquid in the tank based on the reflected radar waves.

A radar measuring device with an array antenna for topology detection and a level measurement antenna for fill level measurement. The array antenna is arranged around the level measurement antenna.

A level measuring instrument is provided, including a microwave integrated circuit in a form of a radar system on chip with at least two transmission hardware channels, each to generate a transmission signal, and at least two receiving hardware channels, each to receive reflected signals from a product surface; a noise level reduction device configured to increase a signal-to-noise ratio of a received signal, which relates to the reflected signals from the product surface, by averaging results of several measurements carried out in succession in time; or a signal level increasing device configured to combine, by an inverse Wilkinson divider, two of the transmission hardware channels to produce a combined transmission signal with increased power or to combine two of the receiving channels to produce a combined reception signal with increased power.

A level measuring instrument is provided, including a microwave integrated circuit in a form of a radar system on chip with at least two transmission hardware channels, each to generate a transmission signal, and at least two receiving hardware channels, each to receive reflected signals from a product surface; a noise level reduction device configured to increase a signal-to-noise ratio of a received signal, which relates to the reflected signals from the product surface, by averaging results of several measurements carried out in succession in time; or a signal level increasing device configured to combine, by an inverse Wilkinson divider, two of the transmission hardware channels to produce a combined transmission signal with increased power or to combine two of the receiving channels to produce a combined reception signal with increased power.

Described are a dielectric conductor arrangement, a method for producing the conductor arrangement, a level radar and a use of the conductor arrangement. The conductor arrangement has a dielectric conductor core made of a solid. Furthermore, the conductor arrangement has a coating 30 which, at least in sections, surrounds the entire circumference of the conductor core without a gap and which consists of a thin conductive layer.

A time domain reflectometer (TDR) transducer (10) for determining a level (24) of liquid (16) in a container (12) includes a first electrode (34) and a second electrode portion (36) with a measuring volume (114) therebetween for receiving material (16) to be measured. The second electrode portion (36) has a shielded electrode section (36A) isolated from the first electrode (34) and an unshielded electrode section (36B), such that an energy pulse propagates along the shielded electrode section (36A) without signal loss, and boomerangs along a second opposite direction across the first conductive electrode portion (34), the measuring volume (114) and the unshielded electrode section (36B) where partial reflection of the pulse occurs at least at the interface (24) of the material (16) to create a return echo that travels in reverse direction, boomeranging back through the shielded electrode section (36A) for analysis by an electronic assembly (32).