Device for detectomg a level

A level height, conductor technology, applied in measuring devices, test/calibration devices, liquid level indicators for physical variable measurement, etc., can solve problems such as high cost, increased manufacturing cost of insulation layer, failure, etc.

Inactive Publication Date: 2012-10-24
NEGELE MESSTECHN
View PDF12 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Problems can also arise in capacitive measuring probes, which often fail when foam forms
Furthermore, in such probes, the disadvantage is that the insulating layer increases the manufacturing cost and suffers from diffusion effect problems, especially when used at high temperature
[0008] In addition, run-time methods are known, such as pulse-run time measurement, time-domain reflectometry (TOR), guided radar echo methods, which, although not necessarily requiring electrical insulation of the probe conductor, have the disadvantage that when laying Relatively expensive for control and analysis circuits in the very high frequency range

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device for detectomg a level
  • Device for detectomg a level
  • Device for detectomg a level

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] exist figure 1 A liquid level measuring device 1 according to the invention, which is used in a tank 2, is schematically shown in . The tank 2 is made of conductive material and filled with medium 4 to a level 3 . The medium 4 can be any medium, in particular a liquid, pasty and / or granular solid medium.

[0053] The conductive box 2 has an opening 5 at the top. The probe conductor 6 is inserted into the conductive casing 2 through the opening 5 in the conductive casing 2 such that the probe conductor 6 is electrically insulated from the casing. The fill level measuring device 1 essentially consists of a probe conductor 6 inserted in the described manner into the conductive housing 2 , an oscillator 7 , an amplifier 8 and an evaluation and control unit 9 .

[0054] according to figure 1 In the embodiment shown, the oscillator 7 is connected to the conductive housing 2 via a pole 10 and to the probe conductor 6 via a further pole 11 . in such as figure 1 In the sch...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a device (1) for detecting a level (3) of media (4), preferably in a tank (2, 200), having an elongated electrical probe conductor (6) extending substantially vertically into the tank (2, 200) and mountable such that said conductor is electrically insulated therefrom, a time-variable electric generator (7) having an internal impedance (Zg) for connection to a feed point (11) of the probe conductor (6), in order to apply a time-variable voltage thereto, wherein the feed point (11) is arranged at one end of the probe conductor (6), in particular at the tank end thereof, and an evaluating and/or control unit (9) for evaluating an electrical variable of the probe conductor (6). In order to enable such a device to detect a level of any medium, in particular liquid, paste-like and/or granulated solid media, in a manner as simple, fault-tolerant and cost-effective as possible, according to the invention the evaluating and/or control unit (9) is designed to measure a foot point impedance of the probe conductor (6) at the feed point (11).

Description

technical field [0001] The invention relates to a device for detecting the level of a medium preferably in a tank, the device having: a long electrical probe conductor extending substantially vertically into the tank and mounted electrically insulated relative to the tank; An electrical generator having an internal impedance (Zg) for connecting the feed point of the probe conductor in order to provide a time-varying voltage at the feed point, where the feed point is preferably arranged at the probe conductor on the end on one side of the box; and an analysis and / or control unit to analyze the electrical value of the probe conductors. [0002] Furthermore, the invention relates to a method for operating a device as claimed in any one of claims 1 to 13 for measuring level heights. [0003] The invention also relates to a method for calibrating a device as claimed in claims 1 to 13, in particular according to variations of the probe conductor. [0004] Finally, the invention re...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/26
CPCG01F23/24G01F23/26G01F25/0061G01F23/2962G01F23/263G01F23/2966G01F25/20
Inventor 彼得·芬德其他发明人请求不公开姓名
Owner NEGELE MESSTECHN
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap