thermal colour fixation plant control

I am a final year university student researching a project on PID controllers.

Please could you assist me in designing a PID controller for the temperature and pressure control of a tubular vessel. The application invloves the dyeing of cloth where the fabric is passed through a hot and humid environment i.e. a pressurised tubular vessel. If you have any information that can help me, please e-mail it to me. Any help would be greatly appreciated.

Thanks
Don
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