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Device for determining and/or monitoring a physical or chemical quantity

An equipment and chemical technology, applied in the field of equipment, which can solve the problems of unsatisfactory power-to-weight ratio, complicated fuel, dangerous replenishment, etc.

Inactive Publication Date: 2005-09-28
恩德莱斯和豪瑟尔德国股份商业两合公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, it turns out that the problem with these solutions is that, in addition to the currently insufficient available power and in particular an unsatisfactory power-to-weight ratio, the main problem of such fuel cells is that they often have to be exposed to a high explosion hazard. The fuel is very complex and more dangerous to refill the fuel cells of the individual field instruments in areas with explosion hazards

Method used

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  • Device for determining and/or monitoring a physical or chemical quantity
  • Device for determining and/or monitoring a physical or chemical quantity
  • Device for determining and/or monitoring a physical or chemical quantity

Examples

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Embodiment Construction

[0025] figure 1 shows a schematic diagram of a first embodiment of a device 1 according to the invention; figure 2 The second embodiment is shown.

[0026] Several field devices 2 are connected to a field bus 4 . These field devices 2 determine one or more measured values ​​of the measuring medium 10 . These field devices 2 communicate with each other via data lines 4 such as fieldbus 4 or two-wire lines. exist figure 1 In the shown embodiment, the communication with the remote control station 8 is carried out via the data line 6; figure 2 In the illustrated embodiment, communication takes place via a radio connection 7 .

[0027] The field bus 4 together with the field devices 2 are supplied with the required electrical energy via a fuel cell stack 9 consisting of individually connected fuel cells 3 . In this respect, for example, liquid hydrogen can be used as fuel.

[0028] If the field device 2 is installed in an area with a risk of explosion, the fuel cell stack ...

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Abstract

The monitoring device (1) has at least one field device (2) for monitoring a given physical or chemical process parameter, connected via a data link, e.g. a field bus (4) with a remote control point (8), the field device coupled to at least one fuel cell (3) positioned at a distance from the field device and used for covering its energy requirement.

Description

technical field [0001] The invention relates to a device for determining and / or monitoring a physical or chemical quantity in a process with at least one field device. Background technique [0002] In order to determine physical or chemical process quantities such as filling level in a container, volume flow or material flow in a line, internal pressure in a pipe or container, medium temperature, etc., the use is necessarily based on various physical measuring principles of various sensors. [0003] For example, the level of the material in the container is mostly measured by ultrasonic waves or electromagnetic waves, especially the transit time of microwave reflection on the surface of the material. When using microwaves, these microwaves are either freely reflected in the container in the direction of the material surface, or they are guided into the container along conductive elements. In addition, capacitive and radiometric methods are often used for level measurement....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q9/02
CPCH04Q9/02
Inventor 迈克尔·基斯特
Owner 恩德莱斯和豪瑟尔德国股份商业两合公司