FNIRSI SG-003A Signal Generator 0-24mA 0-24V Current Voltage Adjustable Analog Simulator
description
FNIRSI SG-003A Multifunctional Signal Generator
The FNIRSI SG-003A is a compact, portable multifunctional signal generator designed for testing, calibration, and troubleshooting industrial automation equipment such as PLCs, process instruments, sensors, transmitters, and electric valves. It supports multiple signal input and output modes, making it a useful tool for technicians, engineers, and maintenance professionals.
Key Features
Active Current Output: 0–24 mA
Passive Current Output: 0–24 mA
Voltage Output: 0–24 V
24 V Loop Output: 0–24 mA
Frequency/PWM Output: 0–9999 Hz
Current Input: 0–24 mA
Voltage Input: 0–30 V
2.4-inch TFT full-color LCD with 240 × 320 resolution
Real-time input and output signal curve display
Programmable automatic signal increase, decrease, and cycle modes
Four preset signal values for quick adjustment
Signal conversion between different signal types
Supports RS485 communication and Modbus
USB Type-C interface for charging and firmware upgrades
Built-in 3.7 V 3000 mAh lithium battery
Approximately 8–10 hours of operating time with continuous 20 mA output
Approximately 26 hours standby time
Maximum power consumption: 0.32 W
Compact and lightweight design: 112 × 82 × 27 mm
Weight: approximately 165 g
Technical Specifications
Parameter Specification
Active Current Output 0–24 mA
Active Current Resolution 0.01 mA
Active Current Accuracy ±(0.1% + 0.005)
Maximum Load 750 Ω
Passive Current Output 0–24 mA
Passive Mode External Supply 0–30 V
Voltage Output 0–24 V
Voltage Resolution 0.01 V
Frequency/PWM Output 0–9999 Hz
Current Input 0–24 mA
Voltage Input 0–30 V
Battery 3.7 V 3000 mAh Lithium
Display 2.4″ TFT Color LCD
Charging USB Type-C, 5 V
Dimensions 112 × 82 × 27 mm
Weight 165 g
The SG-003A is particularly suitable for field testing of 4–20 mA loops, 0–10 V/0–24 V signals, frequency signals, and industrial control equipment.











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