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1. WO2020072911 - DIFFERENTIAL PRESSURE TRANSMITTER WITH INTRINSIC VERIFICATION

Publication Number WO/2020/072911
Publication Date 09.04.2020
International Application No. PCT/US2019/054710
International Filing Date 04.10.2019
IPC
G01L 13/02 2006.01
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
13Devices or apparatus for measuring differences of two or more fluid pressure values
02using elastically-deformable members or pistons as sensing elements
G01L 9/12 2006.01
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
9Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
12by making use of variations in capacitance
G01L 27/00 2006.01
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
27Testing or calibrating of apparatus for measuring fluid pressure
CPC
G01L 13/025
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
13Devices or apparatus for measuring differences of two or more fluid pressure values
02using elastically-deformable members or pistons as sensing elements
025using diaphragms
G01L 27/002
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
27Testing or calibrating of apparatus for measuring fluid pressure
002Calibrating, i.e. establishing true relation between transducer output value and value to be measured, zeroing, linearising or span error determination
G01L 9/12
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
9Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements
12by making use of variations in capacitance ; , i.e. electric circuits therefor
G01L 9/125
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
9Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements
12by making use of variations in capacitance ; , i.e. electric circuits therefor
125with temperature compensating means
Applicants
  • AVGI ENGINEERING, INC. [US]/[US]
Inventors
  • SGOURAKES, George E.
Agents
  • MOLLAAGHABABA, Reza
  • CHONG, Siew
  • DIGIORGIO, Jeanne, M.
  • BRZEZINSKI, Ashley, T.
  • BRULEY, Kenneth, C.
Priority Data
16/152,96905.10.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DIFFERENTIAL PRESSURE TRANSMITTER WITH INTRINSIC VERIFICATION
(FR) TRANSMETTEUR DE PRESSION DIFFÉRENTIELLE AYANT UNE VÉRIFICATION INTRINSÈQUE
Abstract
(EN)
Methods of compensating for undesired influences in a pressure transmitter wherein the pressure transmitter comprises a body for housing a low-pressure sensor and a high-pressure sensor each of which is in fluid communication with a port and in further fluid communication with each other through a connector tube containing a fill fluid. Various embodiments of the compensation process use one of the high-pressure and the low-pressure sensor as a common reference, compensating for changes in calibration, such as changes in the effective areas or spring rates of the non-reference sensor.
(FR)
La présente invention concerne des procédés de compensation d'influences indésirables dans un transmetteur de pression, le transmetteur de pression comprenant un corps pour loger un capteur basse pression et un capteur haute pression qui sont chacun en communication fluidique avec un orifice et en communication fluidique supplémentaire l'un avec l'autre par le biais d'un tube connecteur contenant un fluide de remplissage. Divers modes de réalisation du processus de compensation utilisent soit le capteur haute pression, soit le capteur basse pression comme référence commune, compensant des changements d'étalonnage, tels que des changements dans les zones effectives ou les constantes de ressort du capteur de non de référence.
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