A signal isolator is an electronic gadget designed to keep signal lines in control and instrumentation systems safe and separate. Its main job is to stop ground loops, cut out noise interference, and shield delicate equipment from voltage spikes or variations in ground potential. By electrically isolating the input and output signals, signal isolators help ensure that signals are transmitted accurately and steadily, which boosts the reliability and safety of the entire system.
Signal isolators are commonly used in industrial automation, process control, and communication systems where precise signal integrity is critical. They can isolate analog signals such as 4-20 mA current loops, voltage signals, or digital signals, depending on the application requirements.
In short, a signal isolator boosts the performance and safeguards measurement and control systems by electrically separating various components while still letting the intended signal flow through.