[g0rsq]

The impression I got from the spec sheet was that the rotation change of voltage was based on the view from behind the body, not from the shaft direction, so below the pot, and if that's the case, then I do want it to increase with counter clockwise rotation when seen from below.

I've just looked at the sheet again , the link was digikey's site, try Here

It looks like I was wrong, the spec sheet needs to be looked at very carefully, their orientation IS based on the shaft rotation direction, so shows clockwise on the diagram in an anticlockwise position from below, if that makes sense.

I've had a rotten cold the last few days, so the brain is full of cotton wool right now, and thinking about anything for more than a few minutes isn't working well.

If the resolution is within 10 degrees, that's way better than anything I can get from the Fine Offset device, and close enough for the sort of reporting I am looking for,  and I think that it's a lot tighter than that for this device.

What's making this appealing is that if it's under a good protective shroud so that the bearings are not getting water in to them, the life of this sensor should be very long indeed, and it won't put significant load on the wind vane,  which is what's needed in this application.

Thanks all for the feedback, I think it's worth having a go with one of these.

Resolution is 1/10th of a degree. Output is 12bit resolution analogue output 0-5V (0-5V in 4096 steps)

It is continuous rotation, no stops

Angle of specified component (AMS22B5A1BHASL136N) is 0-360 deg, no gaps

the 10 degree which is confusing is a "programmable" electrical angle, you select the angle you need in 10 deg steps (between 10deg and 360deg) when ordering. ie select the one with 360 deg electrical angle (that is the "36" in the part number). a 10 deg electrical angel will give 0-5 volts out over first 10 deg, then 0-5V from 10deg to 20 deg, then 0-10V from 20deg to 30deg etc.

The 2nd "1" in the part number designates volts increase with counterclockwise movement as viewed from underneath (terminal end)

The "-ND" has no meaning in the specification of the transducer.

See my part number explanation above!


Alternative data sheet here

Try going directly to Bourns and ask for a sample, always worth a try especially if you can use a business address

peter