In a P/I transducer, where is the input signal initially applied?

In a P/I transducer, the input signal is initially applied to the bellows. The bellows are a crucial component in the transduction process, as they convert the applied pressure into a mechanical movement. This movement is then translated into an electrical signal that corresponds to the input pressure.

The bellows expand or contract in response to changes in pressure, creating a displacement that can be measured and interpreted. This mechanism allows the P/I transducer to effectively convert the input pressure signal into a current or voltage output that can be utilized in control systems. Understanding the role of the bellows helps in grasping how pressure variations can be communicated electronically in instrumentation applications.