Shema Tokovaja Petlja — 4 20 Ma

A device like a PLC or indicator that reads the signal, usually by passing the current through a 250 Ohm resistor to create a 1-5V drop for processing. 📐 Connection Types (Wiring Schemes) 2-Wire Connection (Passive)

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 shema tokovaja petlja 4 20 ma

If the wire snaps, the current hits 0 mA, immediately triggering a "fault" alarm. A device like a PLC or indicator that

Handles power-hungry sensors (e.g., gas detectors). 4-Wire Connection (Fully Isolated) the current hits 0 mA