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

A method of measurement, a technology of travel time, used in the field of confirming and monitoring the fill level of a medium in a container using travel time measurement, which can solve the problems of unresolved measurement value confirmation, filling level error, container overfilling, etc.

Active Publication Date: 2015-05-27
EHNDRESS KHAUZER GMBKH KO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Examples

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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

A method for ascertaining and monitoring fill level of a medium in a container by means of a field device with a travel time measuring method, wherein, in a learning phase, application- and device referenced test signals and response signals expected from a fill level upper surface are determined and, therefrom, application- and device referenced comparison signals are ascertained, wherein, in an operational phase, test signals are transmitted toward the medium and application- and device referenced, response signals are received, as well as, by means of a comparison algorithm, the comparison signals are compared with the response signals and a value for an agreement probability is ascertained, and wherein, upon exceeding the ascertained value of the agreement probability above a predetermined limit value, the fill level is ascertained and outputted as a measured value and / or, in the case of subceeding, or falling beneath, the predetermined limit value, a new test signal is transmitted for renewed ascertaining of a response signal.

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 Patents(China)
IPC IPC(8): G01F23/00G01F23/284G01F23/296
CPCG01F23/284G01F23/2962G06N3/08G01F23/80
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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