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Process Fluid Pressure Transmitter with Replaceable Atmospheric Vent Filter

A process fluid, atmospheric pressure technology, applied in the direction of measuring fluid pressure, instruments, thin material processing, etc.

Active Publication Date: 2016-03-09
ROSEMOUNT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the thermal shock of the spray itself must also be tolerated

Method used

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  • Process Fluid Pressure Transmitter with Replaceable Atmospheric Vent Filter
  • Process Fluid Pressure Transmitter with Replaceable Atmospheric Vent Filter
  • Process Fluid Pressure Transmitter with Replaceable Atmospheric Vent Filter

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Embodiment Construction

[0012] Process fluid pressure measurement transmitters that require atmospheric pressure measurement must have a filtration system between the sensor and the outside atmosphere that prevents contaminants from filling the measurement passageway or reaching the pressure sensor. In hygienic measurement applications, the outside of the transmitter is exposed to various substances such as food, chemicals and cleaning agents. In this case, the filter element needs to be protected from contact and must be able to handle high pressure cleaning and scrubbing. According to an embodiment of the present invention, a replaceable atmospheric vent filter is provided.

[0013] figure 1 is a schematic diagram of a sanitary process fluid pressure transmitter according to the prior art. Transmitter 10 includes a base 12 that is mounted or otherwise secured to a process fluid container, such as a pipe or tank. Process fluid pressure acts on isolation diaphragm 14 and causes isolation diaphragm...

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Abstract

The present invention provides a process fluid pressure transmitter for measuring process pressure with reference to atmospheric pressure. The process fluid pressure transmitter includes a pressure sensor fluidly connected to a pair of pressure delivery tubes. The pressure sensor has an electrical characteristic that varies with the pressure applied by the pressure delivery tube. A process fluid inlet is positioned to contact the process fluid and is in fluid communication with the first conduit of the pair of pressure delivery tubes. The atmospheric vent is connected to the second conduit of the pair of pressure delivery tubes. The atmospheric vent is replaceable and has a filter element disposed therein.

Description

Background technique [0001] Process fluid pressure transmitters are commonly used in industrial processes to measure and monitor the pressure of various industrial process fluids such as slurries, liquids, vapors and gases of chemicals, slurries, oil, gas, pharmaceuticals, food and other fluids type processing equipment. [0002] Gauge pressure sensors typically include a process fluid pressure input operably connected to a pressure sensor within the transmitter. The atmospheric vent line is connected to the pressure sensor such that the differential pressure sensor reads the difference between the process fluid pressure and the atmospheric pressure. [0003] In some hygienic measurement applications, the outside of the process fluid pressure transmitter is exposed to various foods and / or chemicals. These devices are typically cleaned by employing caustic solutions, stiff brushes and high pressure sprayers. Therefore, the design of process fluid pressure transmitters used i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L19/00
CPCG01L19/0636Y10T137/2278Y10T137/794
Inventor 格雷戈里·C·豪斯勒尼古拉斯·海伍德丹尼尔·R·施瓦兹
Owner ROSEMOUNT INC