Abstract: An apparatus for automatic leak detection includes an adiabatic tank, an electronic pressure regulator in fluid communication with the adiabatic tank, and an electronic processor in electronic communication with the electronic pressure regulator. The electronic processor is to automatically determine an optimum adiabatic pressure based on an ambient atmospheric pressure, a test pressure, and an ambient air temperature. The apparatus is to generate the optimum adiabatic pressure automatically in the adiabatic tank via the electronic pressure regulator in communication with the electronic processor.

Abstract: Described herein are devices for an electronic system for checking the pressure of the tyres of a motor vehicle, said device comprising at least one means for activating tyre sensors, a means for receiving signals from the sensors, an electronic unit configured to store and/or process information conveyed by the signals emitted by said sensors, and a means for communicating with an on-board computer of the motor vehicle with a view to transmitting the information from at least one of said sensors.

Abstract: The present invention relates to a test system (1) for at least one aircraft navigation instrument (3), said system comprising: a test device (5) capable of being connected to at least one sensor on which the navigation instrument relies to provide a value, said test device being configured to test said sensor by changing its state; a database comprising at least one predetermined value corresponding to a value to be provided by said navigation instrument when said test device changes the state of said at least one sensor associated with said navigation instrument.

Abstract: An apparatus for automatic leak detection, including a chamber to enclose a test specimen. A vacuum pump is in selectable fluid communication via an adiabatic noise cancellation valve with the chamber. A pressure transducer determines a pressure in the test specimen and transmits a pressure signal to a controller. The controller is to control the adiabatic noise cancellation valve to cause the vacuum pump to draw a vacuum from a space between the test specimen and the chamber thereby creating an adiabatic noise cancelling condition in which a temperature of the test specimen is stabilized. The controller is to control a flow of a test gas into the test specimen, and to determine a pressure decay rate from the pressure signal. The controller is to determine if the test specimen meets a leak test specification based on the pressure decay rate under the adiabatic noise cancelling condition.

Abstract: The present invention relates to a system (20; 20?) for detecting leaks for a part having a permeable zone, said system comprising: a test chamber (22, 22?) configured to receive the part to be tested; a device (24) suitable for varying the pressure in the test chamber and/or in the part to be tested; a measuring device (26) for measuring a physical quantity representative of the leak level; characterised in that said system (20; 20?) comprises a main pipe (30) configured to cooperate with the permeable zone of said part, said main pipe (30) having one end (30a) which communicates with the permeable zone, while the other end (30b) of said pipe (30) opens outside the test chamber (22; 22?).

Abstract: A leak detection device includes a space intended to receive a part to be tested, at least two electrodes disposed on either side of the reception space, a direct-current electrical power supply supplying at least one of the electrodes with an output voltage, and a current detector configured to measure the current generated by the voltage difference between the electrodes. The electrical power supply is a power supply including a transformer having a midpoint primary, a transistor connected to said midpoint of the transformer, switches whose succession of openings and closures has at least one duty cycle and enables the transmission of energy through the transformer, and at least one regulation circuit regulating the value of the duty cycle and the voltage supplying the base of the transistor.

Abstract: The present invention relates to a leak detection system for checking the leak-tightness of an object, the system including: a device for pressurising a space; a first pressure sensor configured to measure the variations in pressure of the pressurised space; a second pressure sensor configured to measure the variations in ambient pressure, such as atmospheric pressure; an electronic entity configured to determine a leak depending on the variations in the pressure ?P in the pressurised space and the variations in the ambient pressure ?Pext, the variations ?P, ?Pext being measured over a predetermined test time interval ttest by the first and second sensors, respectively.

Abstract: A method and device for identifying pressure sensors of a tire pressure monitoring system (TPMS) of a motor vehicle. The method includes emission of a sensor activation signal, receiving of signals from at least two different sensors following activation, attenuation and amplification of the signals received, determination of a value indicative of the power of the signals received, and identification of the spatial position of at least one sensor on the basis of values indicative of the power of the signal received. A device configured as a TPMS tool is used for implementing the method.

Abstract: An automatic dispensing device for use in storing and selectively dispensing electronic transmission devices, for example tire pressure monitoring system (TPMS) tire sensors. The dispensing device assists a user in determining the proper transmission device to be dispensed and programs or configures the transmission device in the dispenser prior to dispensing the programmed or configured transmission device to the user. When used for TPMS tire sensors, the dispenser determines the type of TPMS sensor to be programmed, programs the sensor with the proper communication protocol, and dispenses the programmed or configured sensor to the user for installation in the vehicle wheel and tire.

Abstract: The present invention relates to a differential pressure sensor for a leak detection device comprising: at least two bodies in which a cavity is created; a membrane that is arranged between the two bodies and separates said cavity so as to define a test chamber in each one of said bodies; at least one electrode arranged in each one of the test chambers and facing said membrane so as to form therewith a capacitor; characterised in that said sensor comprises at least two seals arranged between each of said bodies and the membrane.

Abstract: The invention relates to a tracer gas leak detection system including at least one sensor delivering a signal, referred to as the sensor signal, which is representative of a concentration of the tracer gas at the sensor. The tracer gas leak detection system includes, for at least one given sensor, a corresponding phase advance correction device delivering a corrected signal from the sensor signal delivered by the given sensor.

Abstract: A tool device for use with a motor vehicle tire pressure monitoring system (TPMS) operable to send and receive signals to a TPMS tire pressure sensor and a radio frequency identification (RFID) tag positioned in a vehicle tire. In one example, the tool is operable to communicate with the RFID tag to receive information from the RFID tag through an ultra-high frequency communication module and send that received RFID tag information to the tire pressure sensor for storage on the tire pressure sensor. The tool may then retrieve the tire pressure sensor information and associated RFID tag information from the sensor and transmit that information to the motor vehicle on-board computer.

Abstract: A leak detection device operable to measure fluid leaks in an element to be tested that is positioned in a first enclosure. In one example, a measuring module is positioned in a second enclosure and connected to the first enclosure and the element to be tested by an aeraulic connection. At least one of the first enclosure and the measuring module are thermally insulated using an insulating material.

Abstract: The invention relates to a method for detecting leakage of a hollow component, comprising the steps of sealing said hollow component (1, 31), creating a pressure difference P1 and P2 between said hollow component interior and an adjacent compartment/enclosure (2, 32), putting a tracer gas in one of the hollow component or said compartment/enclosure, waiting for an enriching time T and then carrying out a step of transferring, via a non-selective or selective restriction (6, 7; 49), the content of said hollow component or said compartment/enclosure (2; 32) into which tracer gas has not been put, in order to concentrate, in a volume downstream of said restriction (6, 7; 49), the tracer gas that said content may possibly contain, and then in looking for the presence of tracer gas in said volume. The invention also relates to an installation for implementing the method.

Abstract: An apparatus for automatic leak detection includes a fixture having a primary seal and a secondary seal. The fixture connects to a workpiece to enclose a test volume defined in the workpiece. The seals are to interface with the workpiece to at least partially enclose a buffer volume. An enclosure is to connect to the fixture to enclose a test portion of the workpiece to form a test chamber. The secondary seal separates the buffer volume from the test chamber. The test volume and the test chamber have a tracer gas pressure differential between them. A port in fluid communication with the buffer volume removes fixture leakage from the buffer volume. A detector detects the tracer gas in the test volume or the test chamber where the tracer gas pressure differential between the test volume and the test chamber urges workpiece leakage of the tracer gas to accumulate.

Abstract: A leak detection device operable to measure fluid leaks in an element to be tested that is positioned in a first enclosure. In one example, a measuring module is positioned in a second enclosure and connected to the first enclosure and the element to be tested by an aeraulic connection. At least one of the first enclosure and the measuring module are thermally insulated using an insulating material.

Abstract: The invention relates to equipment, devices and methods for testing a calibrated leak or passage of pressurized gas from a tire. In one example, a test plug including a calibrated cross section orifice and a predetermined gas flow rate is connected to a tire. The test plug applies a pressure opening the tire valve member to release gas from the tire through the test plug. In one example, a TPMS sensor and a TPMS measurement tool are used to measure the decrease of air pressure in the tire through the test plug and determine if the TPMS sensor is operating properly. In one example, a plurality of test plugs with different gas flow rates are provided. A method for testing the calibrated leak using the test plug is further disclosed.

Abstract: The invention relates to an installation (1) for detecting and locating a leak in at least one fluid transport circuit (Ps, Pt), notably an anemometer circuit of an aircraft, having a leak test apparatus (10) including means (12) for detecting a leak in the said at least one fluid transport circuit (Ps, Pt). In one example, the means for locating a leak includes injecting means (Pp, 14, Ev2) of a trace gas under pressure into the said at least one fluid transport circuit (Ps, Pt), which means are situated in the said leak test apparatus (10), and a trace-gas detection probe (30) intended to be moved along the said at least one fluid transport circuit (Ps, Pt) on the outside thereof, in order to locate the leak.

Abstract: A system and method for resetting or reprogramming tire pressure monitoring system (TPMS) tire sensor data in a vehicle control system or electronic control unit (ECU). The system and method uses a single TPMS relearning tool which (a) receives a first TPMS tire sensor data signals from the TPMS tire sensors, (b) initiates the vehicle control system to enter into a relearning or resetting mode, and (c) re-emits the first TPMS tire sensor data signal as a second TPMS tire sensor data signal to the vehicle control system to reset the vehicle control system to the present TPMS tire sensor data. In one example, the TPMS relearning tool decodes, stores in memory, encodes and transmits a second TPMS tire sensor data signal which simulates the first TPMS tire sensor data signal.

Abstract: A leak detection device and method for use in testing a wall with selective gas/liquid permeability. The wall is sealed inside a containment including an injection chamber and a test chamber. The injection chamber is in communication with an injection and pressurization source and the test chamber is in communication with a vacuum production device. A vaporized liquid detector is in communication with the test chamber operable to detect and/or measure a parameter related to a quantity of liquid vapor or a variation in the quantity of liquid vapor which is indicative of a leak condition through the wall.