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Relative pressure sensor comprising reference pressure supply

A technology of relative pressure and reference pressure, which is applied in the direction of measuring fluid pressure, pressure difference measurement between multiple valves, instruments, etc., and can solve problems such as space requirements

Pending Publication Date: 2022-07-15
EHNDRESS KHAUZER GMBKH KO KG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This input capillary is provided as a separate tube so it needs space inside the relative pressure sensor

Method used

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  • Relative pressure sensor comprising reference pressure supply
  • Relative pressure sensor comprising reference pressure supply
  • Relative pressure sensor comprising reference pressure supply

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Embodiment Construction

[0035] The present invention is applicable to various relative pressure sensors based on different measurement principles. The relative pressure sensor is used to determine the pressure p1 of the medium relative to the atmospheric pressure p2, the sensor comprises: a housing; a measuring element, which is arranged in the housing, wherein the pressure p1 to be measured acts on the outer surface of the measuring element, so Said surface is in contact with the medium; a reference pressure supply which supplies the inner surface of the measuring element with atmospheric pressure p2 in the form of ambient air; an evaluation unit which determines the pressure of the medium from the variables determined using the measuring element p1; and at least one drying chamber arranged in the housing for drawing atmospheric moisture from ambient air supplied through the reference pressure supply. Corresponding relative pressure sensors are manufactured and sold by the applicant, for example, un...

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Abstract

The invention relates to a relative pressure sensor (1) for determining a pressure (p1) of a medium (2) relative to an atmospheric pressure (p2), comprising a housing (3) having a measuring element (4) located in the housing (3), the pressure (p1) to be measured acting on an outer surface of the measuring element (4), the surface is in contact with the medium (2); a reference pressure supply (5) for supplying an atmospheric pressure (p2) in the form of ambient air to the inner surface of the measuring element (4); an evaluation unit (6) which determines the pressure (p1) of the medium (2) on the basis of a variable determined using the measuring element (4); and at least one drying chamber (7) located in the housing (3) for receiving atmospheric moisture from the ambient air supplied through the reference pressure supply (5). According to the invention, a sleeve (9) is provided, which can be pressed into the housing (3) and has a capillary-type and at least partially helical recess (11), which extends around the sleeve (9).

Description

technical field [0001] The invention relates to a relative pressure sensor for determining the pressure of a medium relative to atmospheric pressure, the sensor comprising: a housing; a measuring element, which is arranged in the housing, in which the pressure to be measured acts On the outer surface of the measuring element, said surface being in contact with the medium; a reference pressure supply, which supplies the inner surface of the measuring element with atmospheric pressure in the form of ambient air; an evaluation unit which measures according to use a variable determined by the element to determine the pressure of the medium; and at least one drying chamber arranged in the housing for drawing atmospheric moisture from the ambient air supplied through the reference pressure supply. In this case, the medium whose pressure is to be determined is liquid or gaseous. Background technique [0002] In pressure measurement technology, absolute pressure sensors, differenti...

Claims

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Application Information

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IPC IPC(8): G01L13/02G01L19/06
CPCG01L19/0654G01L13/025
Inventor 米夏埃尔·休格尔尼尔斯·波纳特阿明·鲁普弗兰克·伏尔兹
Owner EHNDRESS KHAUZER GMBKH KO KG
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