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Monitoring state of vibration sensor

A state, mechanical vibration technology, applied in the direction of instruments, scientific instruments, flow characteristics, etc.

Pending Publication Date: 2022-06-17
EHNDRESS KHAUZER GMBKH KO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Density and / or viscosity in turn can only be determined with this measuring device if the vibratory-capable unit is covered by a medium

Method used

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  • Monitoring state of vibration sensor
  • Monitoring state of vibration sensor
  • Monitoring state of vibration sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0063] figure 1 a shows the vibrating fill level measuring device 1 . The sensor unit 2 with the mechanically vibratable unit 3 is depicted in the form of a vibrating fork partially immersed in a medium 4 located in a container 5 . The unit 3 with vibration capability is excited to mechanically vibrate by a drive / receive unit 6 - usually an electromechanical transducer unit - and can be eg a piezoelectric stack or a bimorph drive, but also electromagnetic or magnetic. Telescopic drive / receive unit. However, it is naturally understood that other embodiments of the vibration sensor are also possible. Furthermore, an electronic unit 7 is depicted, by means of which the signal detection, evaluation and / or supply takes place.

[0064] figure 1 b shows a more detailed view of a vibration-capable unit 3 in the form of a vibrating fork, for example used in a vibration sensor sold under the name LIQUIPHANT by the applicant. The membrane 8 and the vibrating element 9 connected to...

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PUM

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Abstract

The invention relates to a method for monitoring the state of a coil (17), which is part of a device (1) for determining at least one process variable of a medium (4) in a container (5), comprising the following method steps: applying an electrical excitation signal (A) to the coil (17) and receiving an electrical reception signal (U) from the coil (17), a first value (U1) of the received signal (U) at a first predefinable measurement time (t1) is determined, the first value (U1) of the received signal (U) at the first measurement time (t1) is compared with a reference value (Uref), and a status indicator for the coil (17) is determined on the basis of the comparison. The invention also relates to a device (1) designed to carry out the method according to the invention.

Description

technical field [0001] The present invention relates to a method for monitoring the state of a coil which is part of a device for determining at least one process variable of a medium in a container, and to a device designed to implement the method according to the invention . The device is a vibration sensor. The device includes a unit with mechanical vibration capability, a drive / receive unit and an electronic unit. The process variable is given, for example, by the filling level, in particular the limit level, the volume flow of the medium, or also by its density or viscosity. For example, the medium is located in a receptacle, such as a container, tank or pipe. The medium itself is given, for example, by liquid, gas or bulk material. Background technique [0002] Vibration sensors are often used in process and / or automation engineering. In the case of fill level measuring devices, they have at least one unit capable of mechanical vibration, such as a pendulum fork, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/52G01R31/50G01K7/38G01N9/00G01N11/16
CPCG01F23/2966G01F1/66G01N11/16G01K7/38G01N2009/006G01K7/36G01N9/002G01R33/02
Inventor 穆罕默德·萨迪克·易卜拉黑米佛朗哥·费拉多罗穆亚尔德·吉拉尔迪拉斐尔·屈南伊莎贝拉·桑多拉尔夫·瓦克尔
Owner EHNDRESS KHAUZER GMBKH KO KG