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FNIRSI SG-003A Multifunctional Signal Generator Calibrator 0-24mA 0-30V

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FNIRSI SG-003A Multifunctional Signal Generator – Handheld Industrial Process Calibrator with 2.4-Inch Color Screen & Real-Time Waveform Display

The FNIRSI SG-003A is an essential, highly accurate handheld signal generator and process calibrator designed for industrial automation engineers, PLC programmers, and field technicians. Featuring comprehensive signal simulation and measurement capabilities—including active current (0-24mA), passive current (0-24mA), voltage (0-30V), and PWM pulse signals—it simplifies loop testing, sensor calibration, and valve positioning. Outfitted with an ultra-bright 2.4-inch color TFT display and real-time trend curve plotting, this instrument delivers benchtop-level diagnostics in a compact, portable frame.

Key Features:

  • All-in-One Signal Simulation & Measurement: Effortlessly outputs and reads active current, passive current loops, DC voltage, PWM frequencies, and resistance conversions.
  • Real-Time Waveform & Trend Curve Display: Visualizes live signal fluctuations directly on the 2.4-inch high-definition screen to easily track signal stability and transient drops.
  • Customizable Auto Programming & Step Functions: Features programmable step outputs, linear ramping, and continuous automatic sweep modes for rapid automated loop testing.
  • Dedicated 24V Loop Power Supply: Provides direct 24V loop excitation power to simplify two-wire transmitter diagnostics without requiring external bench power supplies.
  • Pre-Set Programmable Shortcut Keys: Allows operators to save up to 4 sets of frequently used current or voltage values for one-touch field output switches.
  • Rechargeable High-Capacity Power Architecture: Built with a long-lasting 3000mAh lithium rechargeable battery with USB Type-C fast charging for up to 24 hours of field runtime.
  • Type Signal Generator
Rs. 7,500.00 incl. taxes
In stock
In stock
Ready to work out of the box!

All our meters are delivered with essential accessories and easy-to-follow instructional manual. Unbox and start measuring with confidence!

Warranty and returns?

All our meters come with 12 month warranty against manufacturing defects. Please read our returns and refund policy for more information.

Got Questions? Feel free to get in touch.

Streamline industrial commissioning, debug complex PLC/DCS systems, and verify field transmitter parameters with the FNIRSI SG-003A Multifunctional Process Calibrator. Manual analog potentiometers and single-function meters delay setup and require carrying bulky equipment. The SG-003A solves this by combining full signal generation, measurement conversion, and automated programming into a lightweight 273-gram ergonomic housing.

Engineered with built-in input/output reverse connection protection, over-current protection, and silicone anti-drop corner bumpers, this tool guarantees long-term durability in harsh industrial factory environments.

Technical Specifications Matrix

Signal Function Mode Active Output Range Measurement Reading Range Signal Resolution Step Basic System Precision
Current (mA) 0 to 24.000 mA 0 to 24.000 mA 0.001 mA ±(0.02% + 0.003)
Voltage (V) 0 to 24.000 V 0 to 30.000 V 0.001 V ±(0.02% + 0.003)
24V Loop Excitation 0 to 24.000 mA (Max 24V) N/A 0.001 mA ±(0.1% + 0.005)
Passive Current (xP) 0 to 24.000 mA N/A 0.001 mA ±(0.02% + 0.003)
PWM Frequency 0 to 9999 Hz N/A 1 Hz ±1%

General System Hardware & Operational Settings

  • Display Interface Panel: 2.4-inch High-Definition Color TFT Screen with Adjustable Backlight

  • Sampling & Curve Analysis: Real-time Input/Output trend curve plotting with customizable time bases

  • Circuit Safety Safeguards: Input-to-Output Reverse Voltage Protection and Over-Current Fuse Circuitry

  • System Power Core: 3.7V / 3000mAh High-Capacity Lithium-Ion Battery

  • Standby Operating Duration: 16 to 24 hours continuous runtime (depending on 24V load output usage)

  • Charging Standard Interface: USB Type-C Port (5V / 1A charging input)

  • Physical Housing Outer Dimensions: 92mm x 72mm x 33mm

  • Net Host Device Weight: Approximately 273 grams

Targeted Industrial & Field Applications

  • PLC & DCS Automation Commissioning: Inject 4-20mA or 0-10V signals directly into PLC analog input modules to verify ladder logic, alarm triggers, and HMI display scaling.

  • Process Transmitter Calibration: Test and calibrate 2-wire temperature, pressure, level, and flow transmitters using the internal 24V loop power excitation.

  • Control Valve Actuator Positioning: Calibrate I/P converters, motorized control valves, and electronic positioners using automated step ramping signals.

  • Frequency & Pulse Signal Audits: Test speed sensors, flowmeters, and pulse counting circuits using the adjustable PWM output mode.

Package Contents

  • 1 x FNIRSI SG-003A Multifunctional Signal Generator Main Unit

  • 4 x Heavy-Duty Alligator Clip Test Leads

  • 1 x USB Type-C High-Speed Charging Cable

  • 1 x USB Power Wall Adapter Charger

  • 1 x English User Operations Manual