| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electrodynamic vibrometer for vertical motion capable of reducing an error in frequency characteristic due to temperature change. SOLUTION: In this electrodynamic vibrometer 1 for vertical motion, a magneto coil 6 provided on a movable member 4 supported to be vertically movable by a support spring 5 is moved by vibration of a vibrator in a case 2 fixed to the vibrator and having a magnetic circuit 3 fixed inside, and the vibration of the vibrator is measured according to the voltage generated by the vibration. In the vibrometer, an iron piece 7 is fitted to an upper part of the movable member 4 positioned higher than the mounting position of the magnetic circuit 3.</p> |
