On Wed, 21 Sep 2005 17:49:49 -0500, "Dan, U.S. Air Force, retired"
wrote:



47 bucks delivered with the thermocouple! Does it do PID? Heck of a deal it looks like...


I'd be able to answer if I knew what PID is.

Dan, U.S. Air Force, retired

in control system parlance PID is proportion, integral and derivative.

they are used when the state of the process being monitored cant be
directly measured but must be inferred or calculated as the integral
of some calculation. one that comes to mind is the inference of a flow
rate from the upstream pressure and downstream pressure differential
of a fluid flow through a known diameter aperture plate.

Stealth Pilot