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Three points to control, one issue

2008-02-25View Original

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Three distillation units (producing the same product) share one hot water tank, and it is required that the temperature of this hot water tank be controlled simultaneously for all three units. How should this be done? Is it feasible to use three probes in series to control the solenoid valve of a hot water tank? Is there any phenomenon of signal enhancement/weakening? What if it doesn’t work? Please, dear experts, give me some guidance! Thank you! ! ! !
Reply #22008-02-25
The distillation unit is a hot water circulation heating system for controlling the temperature of the distillation kettle – why not use three control valves? The kettle temperature is controlled by adjusting the hot water circulation volume.
Reply #32008-02-25
Could selective control be considered?
Reply #42008-02-25
Do you want to control the hot water temperature or the product temperature? You’ve confused me.
Reply #52008-02-25
Please send the flowchart so that the issue can be resolved.
Reply #62008-02-25
I’m not sure whether your question wasn’t expressed clearly enough, or if I just didn’t understand it
Reply #72008-02-25
I’m not sure if it’s possible to divide the signal coming from the solenoid valve of the hot water tank into 3 separate signals, so that these signals can be used to control 3 separate distillation units???
Reply #82008-02-25
To be more specific, let’s discuss each issue individually
Reply #92008-02-26
I don’t know which production variables should be used to control the temperature?
Reply #102008-02-27
Is it a hot water tank used to heat the three distillation units? If the amounts of material in the three distillation units differ, the required temperatures will also vary; in such a case, it is not possible to make adjustments, and this will have an impact on the material specifications.
Reply #112008-02-27
The question isn’t very clear – what does the solenoid valve on the boiler control? Is there a temperature control loop from the boiler to each distillation tower?
Reply #122008-02-27
A flowchart can clarify things; otherwise, it’s incomprehensible

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