Patent ID: 9709450
Date: 2017-07-18
CPC Classifications: G01L

Claim:
1. A method, comprising: tuning an adjustable dampening chamber for a predetermined resonance frequency, wherein the adjustable dampening chamber comprises a machined plate inlet tube, a machine plate inlet tube cover having an inlet hole, and an adjustable volume cavity in communication with the inlet tube, wherein the tuning comprises: installing, in a housing of a differential pressure sensor, the adjustable dampening chamber, wherein the differential pressure sensor comprises a diaphragm, and wherein the housing defines a main pressure port and a reference pressure port; configuring the main pressure port to be in communication with a first surface of the diaphragm; configuring the reference pressure port to be in communication with the inlet tube, wherein the reference pressure port is adapted to receive a reference pressure having a static pressure component and a dynamic pressure component, and wherein the inlet tube is configured to filter at least a portion of the dynamic pressure component of the reference pressure and to output to the adjustable volume cavity, a first filtered reference pressure; wherein the adjustable volume cavity is tuned to reduce at least a portion of the dynamic pressure component of the first filtered reference pressure and to output to a second surface of the diaphragm, a second filtered reference pressure.