FNIRSI® SG-004A Multi-Functional Signal Generator
FNIRSI SG-004A signal generator is a high-performance device aimed at the industrial control industry. It can handle various working conditions with one device. The device has a simple but stable appearance design, simple operation logic and powerful performance, and has been loved by consumers since it was launched. Support voltage, current, frequency, thermocouple and other signal mode output and input, support independent 24V power supply, programming mode, real-time curve, historical record, MODBUS communication, firmware upgrade and other powerful functions.
The FNIRSI SG-004A Multi-Functional Signal Generator is a versatile testing instrument designed for industrial automation, electrical maintenance, and instrumentation calibration. It supports signal generation and measurement for active and passive current, voltage, frequency, pulse-width modulation (PWM), millivolt, thermocouple, and resistance signals. This makes it suitable for testing sensors, transmitters, valve positioners, programmable logic controllers (PLCs), and other industrial control equipment without relying on the actual process signals.
The device features a color display for monitoring measurements, programmable signal output, preset values, real-time signal curves, and historical data recording. It also supports signal conversion and Modbus communication over RS485, helping technicians evaluate control systems and automate testing procedures. Its rechargeable battery and USB-C charging interface make it practical for fieldwork, workshops, and laboratories.
Features:
- ≤0.2% Error.
- Engineering quantity / signal value.
- Real-Time curve record view.
- 2.4″TFT Full Color HD display with backlight.
- Designed for industrial control industry.
- stable appearance design.
- Supports voltage, current, frequency, thermocouple, and other signal modes for both output and input.
- Provides support for independent 24V power supply.
- Offers programming mode for customization.
- Facilitates real-time curve visualization.
- Allows for historical data recording.
- Supports MODBUS communication protocol.
- Enables seamless firmware upgrades.
- Incorporates other powerful functions for enhanced functionality.
Specifications:
Basic Specification:
Output Signal:
Input Signal:
Applications:
- PLC and DCS input/output testing.
- Industrial process instrumentation calibration.
- Testing 4–20 mA current-loop devices.
- Voltage and current transmitter simulation.
- Thermocouple and RTD temperature input testing.
- Valve positioner and actuator troubleshooting.
- Frequency and PWM signal testing.
- Industrial sensor and control circuit diagnostics.
- Electrical maintenance and field service.
- Engineering laboratories and technical education.
Packages Included:
- 1 × FNIRSI SG-004A Multi-Functional Signal Generator.
- 4 × Test Leads.
- 1 × USB Type-C Charging Cable.
- 1 × User Manual.
