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Subject: Control Valve cycle measurement
A manufacturer of a valve and actuator specs the life at 2 million cycles. They then define a cycle as 0-90 % movement.
How about the case of where the valve sits all day oscillating around 50 to 60 %? What then would constitutes a cycle for preventative maintenance purposes? Should we integrate the movement over the time period and divide by 90? Would appreciate any thoughts on this.
Cheers
Gerald Beaudoin
A manufacturer of a valve and actuator specs the life at 2 million cycles. They then define a cycle as 0-90 % movement.
How about the case of where the valve sits all day oscillating around 50 to 60 %? What then would constitutes a cycle for preventative maintenance purposes? Should we integrate the movement over the time period and divide by 90? Would appreciate any thoughts on this.
Cheers
Gerald Beaudoin