| 摘要 |
<p>PURPOSE:To simplify mounting work for a device and repairing/adjusting works for a magnetic sensor by providing a ferromagnetic member so that both end parts are positioned on the outer peripheral surface of a conductor and providing the magnetic sensor between both end parts of this ferromagnetic member. CONSTITUTION:Holes 1a, 1b penetrating inner/outer peripheral surfaces are provided in the cylindrical conductor 1 and a spiral notch 1c going the round of conductor 1 from the hole 1a up to the hole 1b is provided. The ferromagnetic member 6 is provided so as to encircle a detection part and both end parts of the member is positioned on the outer peripheral surface of the conductor 1. The member 6 consists of a bar-shaped part 6a provided inside(hollow part) of the conductor 1 and two L-shaped parts 6b connected to the bar-shaped part 6a with penetrating the holes 1a, 1b. The magnetic sensor 3 is provided between both end parts of the member 6 on the outer peripheral surface of conductor 1 and a sensitivity direction of sensor 3 is subjected to face to the shaft direction of conductor 1. By means of detecting a magnetic field caused from a current I flowing to the detection part 1d by the sensor 3 and forwarding it through photoelectric conversion and amplification parts, an electrical output proportional to the current I is detected.</p> |
