True RMS Isolated Voltage Sensor, AC/DC 500V Input, 4-20mA Output

The SUCH true RMS voltage sensor measures AC and DC voltages from 75mV to 500V and converts them into standard 4–20mA or 0–20mA current outputs for PLC, SCADA, and industrial automation systems. True RMS measurement ensures accurate monitoring of both sinusoidal and distorted waveforms, making it ideal for VFDs, SCR-controlled equipment, and power distribution applications. Featuring 1.5kV three-way galvanic isolation, it provides reliable long-distance signal transmission with improved noise immunity and fault detection for industrial control systems.

Feature

• True RMS Measurement
  Measures both sinusoidal and non-sinusoidal waveforms accurately, giving consistent readings in VFD and SCR environments where average-responding sensors produce errors.
• AC and DC Voltage Input
  Accepts AC or DC signals from 75mV to 500V, covering a wide range of industrial voltage levels without requiring separate devices.
• 4-20mA Output
  Current loop output maintains signal integrity over long cable runs and is less affected by electrical noise compared to voltage output.
• Open-Circuit Fault Detection
  A signal drop below 4mA indicates a wiring fault or open circuit, enabling connected PLCs and monitoring systems to detect transmission errors automatically.
• 3-Way Galvanic Isolation
  Input, output, and power supply are independently isolated at DC 1.5kV, protecting control systems from electrical surges and ground noise.
• DIN Rail Mounting
  Compact design installs on standard DIN rail, integrating alongside other control components in existing cabinet layouts.

Dimension (Unit:mm)

Wiring

Details