Instrumentation is rarely just about reading a number; it is often part of a "control loop." A sensor measures a variable, a transmitter sends that signal to a controller (like a PLC ), and the controller adjusts a "final control element," such as a valve or motor, to maintain a desired set point. Key Components:
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The use of specialized tools to measure biological signals, such as heart rate or blood glucose levels. Instrumentation is rarely just about reading a number;