Thread: Sous vide
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Old Tue, Sep-29-09, 17:53
CamNat CamNat is offline
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Quote:
Originally Posted by IslandGirl
I think PID means "put in device", which would mean you can just drop it over the side (and cover, I guess).

That would be so cool.



PID == proportional, integral, derivative... it's a type of automatic control device with excellent ability to hold a parameter to a particular set point. (I'm a retired Chemical Engineer... these are a big deal in Process Control.) Sous Vide depends on controlling the temperature to a particular temperature +/- 0.5 degrees. If you ever stuck a thermometer in a crock pot, you would be amazed at the wild temperature swings the contents achieve. The PID controller compensates for many more factors by monitoring and controlling to the as measured temperature instead of just setting the current to a particular, single level engineers figured out would probably achieve a particular temp in a very controlled lab.
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