| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibrometer capable of obtaining an accurate measured value which is not affected by secular change, a temperature, etc., without using a circuit for adjusting an offset. SOLUTION: When a power source is turned on, a CPU 6 operates a switch 9, connects an amplifier 3 with ground, and stores a signal inputted into the CPU 6 from an A/D converter 5 in a storge device 8, as an offset. The CPU 6 again operates the switch 9, connects the amplifier 3 with a sensor 2, and outputs display data corresponding to the difference between a digital signal inputted into the CPU 6 from the A/D converter 5 and the offset stored in the storage device 8, to a display unit 7. Thus, a measured value is displayed.
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