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 an active probe (1) for measuring a voltage across a high value impedance, said probe (1) comprising: an impedance matching circuit (10) configured, on the one hand, to have an input impedance at least 100 times higher than the impedance to be measured and, on the other hand, to deliver a low impedance signal at the output; a probe tip (6) configured to take a measurement and connected to said impedance matching circuit (10); a ground reference (G) connected to said impedance matching circuit (10); said impedance matching circuit (10) comprising, connected in cascade, at least one input circuit (14) and a non-inverting amplifier circuit (16) adapted to high impedance values.

Abstract: The present invention relates to a mass spectrometer (10) for detecting leakages via a tracer gas, said spectrometer (10) comprising:—an ionising means (3) intended to ionise said tracer gas;—at least one magnetic-field source (501) that generates a magnetic field (I) that is dependent on the electric current I supplied to said source (501) and that is intended to sort ionised elements;—a means (7) for detecting said tracer gas once ionised; characterized in that said spectrometer comprises a means (II) for adjusting the magnetic field, said adjusting means being configured to allow at least two separate adjustments, said adjustments having different sensitivities.

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 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 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.