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temperature control

3/17/2011 5:36 PM	Rate (1)
izzat Posts: 2 Rating: (1)	dear all, i am new in this field, I am now working on final year project. Can u give me a link or maybe u can teach me on how to control temperature. i want to control steam in by using control valve and i am using Pt100. I want to know how to progam.
izzat Posts: 2 Rating: (1)
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3/18/2011 11:32 AM	Rate (0)
Eastern Posts: 557 Rating: (64)	hi Find the attachment. Hope this will help... Reagrds Attachment PID.pdf (286 Downloads)
Eastern Posts: 557 Rating: (64)
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3/18/2011 2:42 PM	Rate (1)
koenb Posts: 122 Rating: (23)	Hi Izzat , Basicly it isn't so difficult . Make a cyclic interrupt OB and put a PID call inside. See the screenshot from a burnermodulation control wich is identical to your heating application. The pid_out value is a real between 0.0 and 1.0 , this can be rescaled and adressed to a 4-20 mA or 0.10V signal to control your valve. Attachment PI_example.JPG (213 Downloads)
koenb Posts: 122 Rating: (23)
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3/23/2011 4:00 PM	Rate (0)
izzat Posts: 2 Rating: (1)	Tq koenb. it is very helpful.
izzat Posts: 2 Rating: (1)
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