Commrades;

I know the thread on ultrasonics has died down, sorry.

I would like to hear from those few that are working on it.  I have a few
questions about an app, specifically:

0-500mm level sensing
NOT using the polaroid device, but directly using the piezo disc.
Accuracy 5mm, so I hope that temperature compensation is not a must.

If anyone can point me to some piezo discs or theory, I would appreciate the
help.

Thanks
Chris Eddy, PE
Pioneer Microsystems, Inc.
ceddy@nb.net