FR SG-003A Handheld Signal Generator & Loop Calibrator – 4-20mA / 0-10V PLC Debugging Tool

Overview

The FR SG-003A is a professional-grade handheld signal generator used primarily for debugging industrial PLC and process control systems. It is capable of sourcing (outputting) and measuring (inputting) a wide range of signals, including $0-24\text{mA}$ current loops and $0-24\text{V}$ voltage signals. With its high-definition backlit color screen and real-time trend curves, it allows technicians to visualize signal fluctuations that a standard digital readout would miss.

Key Features

• Active & Passive Loop Support: Easily simulate a 2-wire or 4-wire sensor to test your PLC inputs.

• Signal Conversion: Automatically convert your electrical signal into physical units

• Real-time Curve Display: Monitor input and output changes visually on the screen—perfect for spotting “jitter” in industrial sensors.

• Programming Output: Set up automated steps, loops, or ramps to test valve responsiveness without manual input.

• USB-C Rechargeable: Large 3000mAh battery ensures you can work a full shift in the field without hunting for a power outlet.

Technical Specifications ⚙️