Fnirsi SG-002 Multifunctional Signal Generator

The Fnirsi SG-002 is a professional, multifunctional voltage and current signal generator engineered for the testing, diagnostics, and commissioning of industrial automation systems. This compact device serves as a versatile signal source, capable of handling ±12 V and 0–24 mA signals while supporting both active and passive operating modes. With its ability to interface with 2-, 3-, and 4-wire installations and high calibration accuracy, it provides reliable control for various electronic environments.

Advantages

The device offers exceptional flexibility by supporting a wide range of voltage and current standards, including common industrial 0–20 mA and 4–20 mA loops. Its dual-mode adjustment system, featuring a high-precision rotary encoder, allows for both coarse and fine tuning, ensuring exact signal output. The integrated 4-digit LED display with adjustable brightness ensures clear visibility in any lighting condition. Furthermore, the device is highly portable, featuring three distinct power supply options, including a built-in lithium battery, which allows for continuous operation even while charging.

Suitable for

• Testing and commissioning of PLC systems
• Calibration of sensors and transducers
• Debugging of industrial control loops and proportional valves
• Laboratory research and electronic circuit development
• Field service and maintenance of automation equipment

This device may not be suitable for high-voltage power applications or tasks requiring signal generation beyond the specified ±12 V and 24 mA ranges. It is intended for low-voltage signal simulation and testing rather than power supply or high-current industrial driving applications.

Key specifications

• Voltage output range: ±12 V with multiple selectable modes
• Current output range: 0–24 mA
• Accuracy: ±0.05 V and ±0.05 mA after calibration
• Load resistance: Up to 500 Ω for current output
• Power options: 15–30 V DC, 5 V micro USB, or 1100 mAh internal battery
• Dimensions: 89 × 69 × 28 mm
• Adjustment: Rotary encoder with 30 pulses per revolution

To use the Fnirsi SG-002, connect your target device to the detachable terminal strips, ensuring the correct wiring configuration for active or passive mode. Use the rotary encoder to select the desired voltage or current output. You can toggle between coarse and fine adjustment modes to achieve the precise value required. The device automatically saves your settings, allowing for quick restoration upon restart. Use the display menu to switch between actual value and percentage modes as needed for your specific application.

What to consider before purchase

• Verify that your application requirements fall within the ±12 V and 24 mA output limits.
• Ensure the device's wiring compatibility matches your existing 2-, 3-, or 4-wire systems.
• Consider the need for portability versus fixed laboratory use when selecting power methods.

Usage recommendations: For optimal accuracy, perform a calibration of the device periodically, especially when switching between different load environments. Always ensure the terminal strips are securely connected before powering on the unit to prevent signal instability.