how do i tune dearator pr control valve using PID. we set the set point is 0.6

how do i tune dearator pr control valve using PID. we set
the set point is 0.6kg/cm2 now i want 0.5 to 0.7kg/cm2
limits so what should i give p,i,d values. then pls explain
how do set pid values for control valve tuning?

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