Motor speed detect sensor

[vikash23]

Hi,

I am using a motor that spins at 6000 rpm.

I would like to connect a sensor to the shaft of the motor to test the speed of the motor .

The output of the sensor can be analog or digital.

Low cost sensors that I have seen is capable of measuring only upto 5000rpm.

Can any one please suggest me a sensor module that can perform my requirement.

The working voltage of the sensor. can be upto 24V.

I know i can measure the rpm by using the back emf but I need to measure using the sensor and compare the value with the back emf value.

Thanks.

[Zero999]

The easiest method is optical. A piece of reflective foil on a dark wheel or shaft and a reflective optical sensor. The frequency of the pulses can then be counted, to give the RPM.