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1. EP2307869 - SELF-TEST FOR GAS LEAK DETECTOR.

Office European Patent Office
Application Number 09785345
Application Date 16.07.2009
Publication Number 2307869
Publication Date 13.04.2011
Publication Kind B1
IPC
G01M 3/00
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
3Investigating fluid tightness of structures
CPC
G01H 11/08
GPHYSICS
01MEASURING; TESTING
HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
11Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
06by electric means
08using piezo-electric devices
G01M 3/243
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
3Investigating fluid-tightness of structures
02by using fluid or vacuum
04by detecting the presence of fluid at the leakage point
24using infrasonic, sonic, or ultrasonic vibrations
243for pipes
Applicants ROSEMOUNT MEASUREMENT LTD
Inventors ROSE DARREN MICHAEL
HURREY ROGER THOMAS
Designated States
Priority Data 0813014 16.07.2008 GB
Title
(DE) SELBSTPRÜFUNG FÜR EINEN GASLECKDETEKTOR.
(EN) SELF-TEST FOR GAS LEAK DETECTOR.
(FR) DÉTECTEUR ET PROCÉDÉS DE DÉTECTION
Abstract
(EN)
An ultrasonic detector (10) suitable for mounting in a position for surveying an area for a source of airborne ultrasound, which detector comprises a sensor (20) for detecting an ultrasonic sound signal, characterised by a transducer (64) configured to produce a broadband ultrasonic sound signal for reception by said sensor (20) enabling said ultrasonic detector to perform a self-test.

(FR)
L’invention concerne un détecteur ultrasonique (10) qui peut être monté en position afin de surveiller une zone et détecter une source d’ultrasons portés par l’air, lequel détecteur comprend un capteur (20) pour détecter un signal de son ultrasonique, caractérisé par un transducteur (64) conçu pour générer un signal de son ultrasonique en bande large qui sera reçu par ledit capteur (20), ce qui permet audit détecteur ultrasonique d’effectuer un autotest.