Yokogawa Electric Corporation

Fumitake Terao

Shoma Takeda

Shoichi Shiosaki

Kazuma Takenaka

Naoki Noguchi

Kazunori Miyazawa

Satoshi Yoshitake

Kotaro Ogawa

Minako Terao

Saki Kobako

Shinya Mito

Masahito Tsukano

A magnetization device and the like appropriate for various magnetization requirements are more easily provided. Provided is a magnet holding device that is capable of holding a magnet. The magnet holding device includes a ring-shaped portion that is openable/closable and an open/close mechanism allowed to keep the ring-shaped portion in a closed state. The magnet is arrangeable in the ring-shaped portion, and the number of the magnets to be arranged is variable.

Magnet holding device, magnetization device, and magnetizing method

The current measurement device () includes a first sensor (SE) configured to detect a direct current magnetic field and a low-frequency alternating current magnetic field generated due to the current () flowing through the conductor (MC) to be measured, a second sensor (SE) configured to detect alternating current magnetic fields from a low frequency to a high frequency generated due to the current (I) flowing through the conductor to be measured, a first calculator (A) configured to calculate the current flowing through the conductor to be measured from a detection result of the first sensor using distance information indicating a distance (r) between the first sensor (SE) and the conductor (MC) to be measured, a second calculator () configured to calculate the current flowing through the conductor to be measured from a detection result of the second sensor, and a synthesizer () configured to synthesize a calculation result of the first calculator with a calculation result of the second calculator.

Current measurement device, current measurement method, and non-transitory computer readable storage medium

A magnetic flaw detection method includes a magnetization step (S) of moving a magnet () in a predetermined direction (D) along a surface of an object () that is a magnetic body and subsequently removing the magnet () from the surface of the object () to magnetize a region (R) corresponding to a movement range of the magnet () on the object (), a sensor arrangement step (S) of arranging a magnetic sensor () to be capable of measuring magnetic flux leakage () generated from an abnormal portion () of the region (R) that was magnetized in the object (), and a detection step (S) of detecting an abnormality in the region (R) with the magnetic sensor () arranged by the sensor arrangement step (S).

Magnetic flaw detection method, magnetic field measurement processing apparatus, and magnetic flaw detection apparatus

Growing community of inventors

Musashino, Japan

Fumitake Terao