Where can I get a generic PID controller

All the PID controllers I can find are for heaters. I don't want a heater controller, I want a generic PID controller. Would be nice to have selectable inputs & outputs (i.e. 0-10V, 4-20mA, pulse).
Really prefer pulse input, but I'll take whatever I can get.
Anything?
Even if you think it might not be what I'm looking for, please post, and I will check it out.
Thanks.

Yes, you could build a PID circuit yourself but any electronic circuit takes a lot of design, development, tuning, and testing time to assure it is fit and reliable for a specific application. If you buy one that is ready to connect and tune then it will save a lot of time. Here are a few that I found:
http://www.ebay.com/itm/ws/eBayISAPI.dll…
http://www.advantech.com/products/ADAM-6…

Red lion has a wide range of pid controllers, here is their pid page:
http://www.redlion.net/Products/ProcessC…

I have had the same problem with looking for general purpose PID controllers.

I hope this helps.

you will probably need to build it. this can be done with 5 op amps, a handful of resistors and capacitors. 3 op amps are wired to be a differentiater, non-inverting amp and integrater respectively. the output of these go into the 4th amp which should be wired as a non inverting amplifier. The 5th amp is a comparator which compares the signal from your 4th amp to your control signal. the output of this is fed into your circuit (controller out). the signal from your measuring device is fed into the 3 initial amps in parallel. you can make it adjustable if you use potentiometers for your control resistors for your first three amps.

**EDIT
you need to build it yourself because the measuring instrument is a part of the controller. for a temperature controller this would be a thermistor. for a cruise control system in a car this would be some signal thats proportional to the velocity difference between your car and the cruise control setting.