Category: Control Valve

Dead Time in Process Control

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The time interval (Td) in which no response of the system is detected following a small (usually 0.25% – 5%) step input. It is measured from the time the step input is initiated to the first detectable response of the system being tested. Dead Time can apply to a valve assembly or to the entire […]

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Dead Band in Process Control

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Dead Band in Process Control

The range through which an input signal can be varied, upon reversal of direction, without initiating an observable change in the output signal. Dead band is the name given to a general phenomenon that can apply to any device. For the valve assembly, the controller output (CO) is the input to the valve assembly and […]

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