Shema Tokovaja Petlja 4 20 | Ma

If the wire snaps, the current hits 0 mA, immediately triggering a "fault" alarm.

The 4 mA floor allows the system to distinguish between a "zero" reading and a broken wire (0 mA). 🛠️ Main Components A functional circuit consists of four essential parts: Sensor/Transducer: Measures the physical variable. shema tokovaja petlja 4 20 ma

A is the gold standard for analog signaling in industrial automation. It uses a constant current to transmit data from sensors to controllers (PLCs), offering high reliability over long distances. 💡 How It Works If the wire snaps, the current hits 0

The sensor has its own dedicated power source (often AC or high-voltage DC). If the wire snaps