Målesløjfen

Målesløjfen, meaning "measurement loop" in Danish, refers to a system designed to measure and control a process variable. It is a fundamental concept in automation and industrial control, ensuring that a process operates within desired parameters. The loop typically consists of four main components. The sensor or transducer is the first part, responsible for detecting the physical quantity being measured, such as temperature, pressure, or flow rate, and converting it into an electrical signal. This signal is then sent to a controller. The controller, often a programmable logic controller (PLC) or a distributed control system (DCS), compares the measured value to a predetermined setpoint. Based on this comparison, the controller generates a corrective signal. This signal is then transmitted to an actuator, which is the final component. The actuator, such as a valve, pump, or motor, manipulates the process to bring the measured variable back to the setpoint. This continuous cycle of sensing, comparing, and actuating forms the closed-loop system. Målesløjfen is crucial for maintaining stability, optimizing performance, and ensuring safety in various industrial applications. Its effectiveness relies on the accurate calibration and reliable operation of each component within the loop.