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Method for determining and/or monitoring fill level

A filling level, filling substance technology, applied in the direction of machines/engines, lubrication of engines, testing/calibration devices, etc., to the effect of increasing accuracy and/or availability, reducing energy and/or space requirements, increasing accuracy

Active Publication Date: 2021-03-12
EHNDRESS KHAUZER GMBKH KO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0019] However, this introduces additional constraints, for example with respect to the design of a control / evaluation unit for the fill-level measuring device, such as, for example, a microcontroller, or with respect to the energy required for the fill-level measuring device
Especially when using fill-level measuring devices, for example in explosion-hazardous areas, the maximum energy that can be supplied to the fill-level measuring device is in many cases limited due to safety-related standards

Method used

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  • Method for determining and/or monitoring fill level
  • Method for determining and/or monitoring fill level

Examples

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Embodiment Construction

[0078] figure 1 A typical arrangement of a fill-level measuring device 3 which operates according to the travel time principle and is arranged on a container 2 is shown. Located in the container 2 is a fill substance 1 , the fill level L of which is to be determined by a fill level measuring device 3 . For this purpose, the fill level measuring device 3 is placed at a known installed height h above the filling substance 3 on the container 2 . In this case, depending on the application, the container 2 can even exceed 30 m high. The fill level measuring device 3 is arranged on the container 2 in such a way that it transmits the emitted signal S in the direction of the filling substance 1 in the container 2 and ascertains the echo curve on the basis of the part of the signal reflected back in the container 2, the echo The wave curve shows the amplitude A of the reflected signal portion as a function of travel time t. The transmitted signal S and the reflected signal are elect...

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Abstract

The invention relates to a method for determining and / or monitoring the fill level (L) of a filling substance (1) in a container (2) of a process plant by means of a fill level measuring device (3) according to The travel time principle works and the emitted signal (S) is emitted in the direction of the filling substance (1) in the container (2) during the measuring operation (O) and based on the The echo curve (EK) is ascertained in the reflected signal portion in which the echo curve (EK) is transmitted as a function of the amplitude (A) of the reflected signal portion to a superordinate control unit (4), and / or create an envelope curve (HK) enveloping said echo curve (EK) and transmit the envelope curve (HK) to said superordinate control unit (4), wherein said The echo curve (EK) and / or envelope curve (HK) are evaluated by the superordinated control unit (4).

Description

technical field [0001] The invention relates to a method for determining and / or monitoring the fill level of a fill substance in a container of a process plant by means of a fill level measuring device operating according to the travel time principle. Background technique [0002] In the case of fill level measuring devices which operate according to the travel time principle, the fill level is ascertained by registering and evaluating so-called echo curves. Each measurement of the echo curve corresponds to the amplitude of the echo signal reflected on the surface at a certain distance. The transmitter is, for example, an antenna device via which microwaves are emitted. [0003] The travel time measurement method is basically divided into two finding methods: In the case of time difference measurement, the time required for the pulse of the broadband wave signal to travel the path is found. In the case of frequency difference measurement (FMCW - frequency modulated continu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F25/00G01F23/284G01F23/296
CPCG01F23/284G01F23/2962G01F25/20G01F23/80
Inventor 丹尼尔·米勒克劳斯·潘克拉茨西蒙·格雷思
Owner EHNDRESS KHAUZER GMBKH KO KG