Newbie, when starting up, can the control valve be adjusted directly to 50%, or should it be increased gradually from 0% to 50%?
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Newbie, when starting up, can the control valve be adjusted directly to 50%, or should it be increased gradually from 0% to 50%? How should it be done in practice?
It depends on the situation; if it’s in a cut state, you can play however you want. If it is in operation, to avoid process fluctuations, it needs to be gradually adjusted from 0 to 50.
There is a process involved in the valve’s operation; you can directly enter 50, and it still goes through a process to reach 50%
The operation of control valves should be such that its impact on the production process is minimal. So operating between 0% and 50% is relatively reasonable.
The adjustment process is the process of cylinder movement; whether it is done slowly or adjusted down to 50, it is still this same process – the difference lies only in the speed.
From an instrumentation perspective, there’s no problem; from a process perspective, it depends on whether the process and equipment can handle it.