Reading speed from Magnetic pickup

[g.mccormick]

If the low speed causing too low of an input for even a signal conditioner, then I agree change to a prox switch.

 

[qwemx]

The frequency output will be 0 to 2000HZ, it will be less than 2000 HZ

 

[drbitboy]

Previous responses by @parky, @pturmel, @kalabdel, @g.mccormick all say use a proximity sensor.

https://www.google.com/search?q=+proximity+sensor+2000+hz

 

[Chris Taylor]

qwemx
have you made sure that the mag pickup is as close to the teeth as possible <0.2mm, this will increase voltage output significantly. If that fails, use a proximity sensor

 

[qwemx]

Yes we have adjusted the gap and also tried to increase the number of teeths but unable to obtain higher Voltage