Tachometer 1. Mechanical method. The use of mechanical speed sensors for data collection is the traditional method of measuring RPM. The rotational speed in the sensor is detected electronically in the instrument. 2. Optical method. The infrared beam from the instrument is reflected by the reflective sticker on the object to the instrument, and the rotation signal is sent to the measuring instrument. 3. According to the principle of stroboscopic, when the frequency of the high-speed pulse is synchronized with the rotation speed (motion) of the object, in the eyes of the observer, the object is stationary. It can measure the rotational speed of very small objects or in locations that cannot be approached.
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Machinery, bearings, fans and other equipment are essential for speed control. The measurement of speed is mainly divided into three methods:
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