Method For Determining And Monitoring The Level Of A Medium In A Container According To A Runtime Measurement Method

A measurement method, technology of propagation time, applied in the field of confirming and monitoring the fill level of a medium in a container by means of propagation time measurement, capable of solving the problems of unresolved measurement value confirmation, container overfilling, pumping dry, etc.

Active Publication Date: 2012-12-05
EHNDRESS KHAUZER GMBKH KO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Depending on the application, this may lead to overfilling of containers, to pumps running dry, or to other related events which in a given situation are of significant risk
[0025] Due to the above-mentioned measurement problems, wrong filling levels of the medium in the container or unresolved confirmation of measured values ​​may occur

Method used

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  • Method For Determining And Monitoring The Level Of A Medium In A Container According To A Runtime Measurement Method
  • Method For Determining And Monitoring The Level Of A Medium In A Container According To A Runtime Measurement Method
  • Method For Determining And Monitoring The Level Of A Medium In A Container According To A Runtime Measurement Method

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Embodiment Construction

[0034] figure 1 A measuring device 1 operating according to the transit time measurement method for determining the fill level F of the medium 7 is shown. The measuring device 1 is mounted on the container 5 via the nozzle. The illustrated measuring device 1 comprises: a transmitting / receiving element 6 radiating freely into the process space; and a measuring transmitter 9 . The measuring transmitter 9 comprises: at least one transmitting / receiving unit 3 generating and receiving measuring signals; a control / evaluating unit 2 for signal processing of the measuring signals and for controlling the measuring device 1; and, via a bus system and the measuring device 1 communication unit 4 for energy supply control communication. For example, a memory element in which measurement parameters and echo parameters are stored and in which measurement factors and echo factors are stored is integrated in control / evaluation unit 2 . The transmitting / receiving element 6 is, for example, a...

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Abstract

The invention relates to a method for determining and monitoring the level of a medium in a container by means of a field device according to a runtime measurement method, wherein corresponding application and device related test signals and response signals to be expected from a fill level surface are determined in a teaching phase and application and device related comparison signals are determined therefrom, wherein test signals are output in the direction of the medium and application and device related response signals are received in an operating phase and the comparison signals are compared to the response signals by means of a comparison algorithm and a value for a probability of matching (w) is determined,; wherein the fill level is determined and output as a measurement value upon the determined value of the matching probability exceeding a predefined threshold and/or a new test signal is output for once again determining a response signal upon falling short of the predefined threshold.

Description

technical field [0001] The invention relates to a method for ascertaining and monitoring the fill level of a medium in a container using a transit time measurement method. Background technique [0002] Such methods for determining and monitoring the fill level in containers are frequently used in measuring devices of automation and process control technology. For example, fill level measuring devices are available from the present assignee under the trademarks Prosonic, Levelflex and Micropilot, which work according to the transit time measurement method and serve to determine and / or monitor the fill level of a medium in a container. These fill-level measuring devices emit periodic transmit signals in the microwave or ultrasonic range by means of transmit / receive elements in the direction of the top surface of the fill substance and receive reflected echo signals after a distance-dependent propagation time. Conventional fill-level measuring devices that operate with microwa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/00G01F23/284G01F23/296
CPCG01F23/284G01F23/2962G01F23/0061G06N3/08G01F23/80
Inventor 彼得·克勒费尔温弗里德·迈尔迪特马尔·施潘克
Owner EHNDRESS KHAUZER GMBKH KO KG
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