Vibration Sensor: Definitions, Applications and How to Use it

The first ones appeared in the early 1900's and were large mechanical devices, devised to measure and to record tractive and brake effort in the automotive industry. They consisted of two tracing pens, one centred and one pendulum mounted, above a paper scroll. The scroll was housed on two clockwork driven drums operated by a winding handle. Before its invention, the only method of measuring acceleration was by observation.