Process fluid pressure transmitter with replaceable atmospheric vent filter

摘要

A process fluid pressure transmitter for measuring a process pressure referenced to atmospheric pressure is provided. The process fluid pressure transmitter includes a pressure sensor fluidically coupled to a pair of pressure conveying conduits. The pressure sensor has an electrical characteristic that varies with the pressures applied by the pressure conveying conduits. A process fluid inlet is disposed to contact a process fluid, and is in fluidic communication with a first conduit of the pair of pressure conveying conduits. An atmospheric vent is coupled to a second conduit of the pair of pressure conveying conduits. The atmospheric vent is replaceable and has a filter element disposed therein.

主权项

1. A process fluid pressure transmitter for measuring a process pressure referenced to atmospheric pressure, the process fluid pressure transmitter comprising:
a pressure sensor fluidically coupled to a pair of pressure conveying conduits, the pressure sensor having an electrical characteristic that varies with the pressures applied by the pressure conveying conduits; a process fluid inlet disposed to contact a process fluid, and being in fluidic communication with a first conduit of the pair of pressure conveying conduits; an atmospheric vent coupled to a second conduit of the pair of pressure conveying conduits, the atmospheric vent being replaceable and having a filter element disposed therein; and wherein the atmospheric vent includes a filter body that is configured to receive a filter element and maintain a first side of the filter element in fluidic communication with the second conduit, while a second side of the filter element is configured for exposure to an ambient environment; wherein the filter body includes at least one passageway operably interposed between the second side of the filter element and the ambient environment, wherein the at least one passageway includes at least one corner.