Used when the sensor requires more power than the 4 mA baseline can provide.
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
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. Used when the sensor requires more power than
Complete electrical isolation between power and signal. ✅ Why Use 4-20 mA? 💡 How It Works The 4 mA floor
The sensor has its own dedicated power source (often AC or high-voltage DC).
Two wires for power and two separate wires for the 4-20 mA signal.
If you need a for a specific microcontroller like an Arduino or PLC.