| 摘要 |
<p>PURPOSE:To easily check the attaching direction of a light magnetic field sensor at the time when a plurality of points of current and magnetic fields are measured with the light magnetic field sensor. CONSTITUTION:Within a light magnetic field sensor 1, light transmitted from an emission part 4 is modulated by an outside magnetic field and received by a light receiving part 5. A light signal received by the light receiving part 5 is converted into an electric signal within a photoelectric convertor 3 and the electric signal is observed with a waveform observing device 11. When the attaching direction of the light magnetic field sensor 1 is checked, a permanent magnet 10 and the light magnetic field sensor 1 are suddenly separated from each other after an N-pole or an S-pole of the permanent magnet 10 is made suddenly to approch the light magnetic field sensor 1 or the N-pole or the S-pole of the permanent magnet 10 is made slowly to approch there. Since a waveform different in a variable direction is shown on a waveform observing device 11 in response to the direction of an optical path within the light magnetic field sensor 1, the waveform on the waveform observing device 11 is observed for the purpose of discrimination of the attaching direction of the light magnetic field sensor.</p> |
