Near Intersection of I-35 & I-90 Southern Mn. | D.J. and Raven make a shaft sensor that will fit directly on a 1" shaft. This sensor could also be used with other type drives with some fabrication. The style I am referring to uses an internal optical disk that is a piece of plastic with pie shaped alternating areas of black and white.
As the shaft turns, the disk turns past an optical sensor which in turn creates pulses by shorting the signal line to ground and then releasing it from ground. A calibration number in the display converts these pulses to Revolutions Per Minute.
They come in two different speed ranges. The only difference is the slow speed model has more pie shaped areas on the plastic disk than the fast speed model. If the shaft speed is fairly slow, then the model with more pie shaped pieces is used so that more pulses are created for each revolution. The calibration number used in the display is dependent on which model is being used.
This type of sensor can be used with a variety of displays in various situations. This type of sensor works well with monitoring the bed speed. |
Adding rpm sensor to spreaders on fertilizer spreader
