What is the difference between bypass and force in instrumentation engineering?
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What is the difference between bypass and force in the field of instrumentation? I would appreciate the advice from fellow sailors.
Bypassing means that the circuit is not under the control of the system’s interlocks; it is generally used to handle fault emergencies. It requires a high level of authorization, and a manual input of a specific status or value is needed to unlock it, which allows its use during normal production operations. I hope the answer is helpful to you
Bypassing is generally applied to input signals, such as those from field transmitters, on a forced basis, while it is used for output signals, such as solenoid valves and motors.
Thank you, can the interlock action output also be forced?
For chained output, a forced (anti-chain operation) setting can be configured, but it is only for debugging purposes; operations are not allowed once chaining is in effect. This is similar to the reason why chain valves generally do not have handwheels – the fate of the device is left to the predetermined chain sequence, thereby avoiding errors caused by human operation.