System for automatic recording of vibration parameters

A system for automatically recording vibration parameters consists of 20 accelerometer channels with signal transducers followed by low-pass filters, and one frequency-to-voltage conversion channel. A voltmeter is connected to each channel through a commutator switch and so is a timer which feeds the voltmeter readings to a transcriber for printout and alphanumeric documentation. The printer is also connected to the commutator switch through a device which matches recorded data with the corresponding pickup channel. This SAR-21 system was designed with maximum use of series produced components. Its measurement ranges are 0-600 m/sq acceleration and 20 to 2500 Hz frequency. The recording time is 0.04 s for any one parameter and the error of the system does not exceed + or - 2%.