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Looking for Non-Con. RPM Sensor for use with Lab View

I guess that connecting a load of F/V convertors to analogue ports will be easy to understand conceptually, but I wonder if you have considered that you could remain digital and sample multiple ports using a simple switching circuit and a couple of digital i/o control lines.
If you were to say connect the timer counter channel line to the output of a CD4051B (pin 3) and connect three digital i/o lines to the CD4051B (pins 11,10 and 9) you could handle eight channels, all digital as required. Lower chip count, no analogue set up or calibration required and only a couple of nominal value pull up resistors to get it all to hang together.
Analogue F/V's are not 'instantaneous' and require calibration, as well as being prone to temperature effects and component tolerances.
It's just a differnet view point. 🙂
Any thoughts?
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Message 11 of 13

You can try using a fiber optic sensor from banner. I think their d12 or d10 series sensors would work for this.


Other manufacturers will probably have something similar.


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Message 12 of 13

Indeed there are many such conditioning modules available..

To add to the list check out



Did you by chance notice that this thread is not far from 4 years old?






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Message 13 of 13