Radar level gauge system and method of determining the fill level of a product in a storage tank
A technology of level gauge and filling material, which is applied in the field of guided wave radar level gauge system, can solve the problem of reduced sensitivity and achieve the effect of simplifying generation and coupling
Active Publication Date: 2021-01-01
ROSEMOUNT TANK RADAR
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[0007] Although enabling more accurate fill level determination in applications with varying propagation characteristics inside tanks, the reference reflector reflects part of the signal, meaning that it is different from a corresponding guided wave radar level gauge system without a reference reflector The sensitivity of this radar level gauge system is somewhat reduced compared to
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no. 3 approach
[0058] first reference image 3 , schematically shows part of an example configuration of the probe device 3, including in a schematic side view and consisting of image 3 The first transmission line probe 4a and the second transmission line probe 4b in the sectional view of the plane indicated by A-A' in .
[0059] in such as image 3 In the schematically shown example probe arrangement configuration, the first transmission line probe 4a comprises a first transmission line probe conductor 24a, and a first dielectric enclosing structure 26a at least partially surrounding the first transmission line probe conductor 24a. Similarly, the second transmission line probe 4b includes a second transmission line probe conductor 24b, and a second dielectric surrounding structure 26b at least partially surrounding the second transmission line probe conductor 24b.
[0060] exist image 3 In the exemplary probe device configuration of , the first dielectric enclosure structure 26a is pro...
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The present disclosure relates to radar level gauge systems and methods of determining the fill level of product within a storage tank. The radar level gauge system includes: a transceiver device; a first probe that directs a first transmit signal to product in a storage tank through the surrounding medium and returns a first surface echo signal, the first probe being configured to guide the first transmitted signal at a first propagation velocity exhibiting a first dependence on the dielectric constant of the surrounding medium; a second probe which guides the second transmitted signal towards the product through the surrounding medium and returns to the second surface back to a wave signal, the second probe configured to direct a second transmit signal at a second propagation velocity exhibiting a second dependence on a dielectric constant of the surrounding medium different from the first dependence; and processing circuitry for, based on The first surface echo signal, the second surface echo signal, and the known relationship between the first dependence relationship and the second dependence relationship determine the fill level.
Description
technical field [0001] The present invention relates to a guided wave radar level gauge system and method for determining the fill level of a product in a storage tank. Background technique [0002] Radar level gauge systems are widely used to measure process variables of products contained in storage tanks such as fill level, temperature, pressure, etc. Radar level gauging is usually performed by means of non-contact measurements or by means of contact measurements commonly known as Guided Wave Radar (GWR), where electromagnetic radiation is radiated towards the product contained in the tank The signal is guided by means of a tactile measurement to the product and into the product via the transmission line probe. Transmission line probes are typically arranged vertically from the top to the bottom of the tank. The electromagnetic signal is then reflected at the surface of the product, and a receiver or transceiver included within the radar level gauge system receives the ...
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IPC IPC(8): G01F23/284
CPCG01F23/284G01S7/03G01S13/88G01R27/2676H01Q1/225F17C13/02G01F23/268G01F23/80
Inventor 米卡埃尔·埃里克松
Owner ROSEMOUNT TANK RADAR