Posted by aidan on November 09, 2001 at 16:09:30:
In Reply to: Re: Black Box Intelligent Controller Concept posted by Gburns on November 05, 2001 at 06:12:58:
1) Boilers are supplied with minimal built-in controls, usually only temperature (heating) or pressure & water level controls (steam), and a high limit safety cut-off. The boiler controllers (e.g., Satronic)usually monitor flame, ignition,purge, oil pressure, etc.. More complex controls are optional extras which are added by a BMS/DDC controls contractor employed by the customer, to suit their requirements.
2) No.
3) Yes.
Optimal Start/Stop features are available with BMS installations e.g., to start the boiler at the latest time possible to get up to working temperature prevailing outside temperature.
4) All information could be recorded with the appropriate sensors/transducers and recorded in the memory of a BMS outstation, typically 1,000 data points per sensor. Data can be downloaded or printed at intervals. The information is only available on boilers where the customer has paid for such a monitoring system. You get what you pay for (if you're lucky).
5) Yes, but I can't think of one.
http://www.trend-controls.com/