The FNIRSI SG-003A is a handheld process signal generator for commissioning PLC analog inputs, transmitters, valve positioners and panel meters. It sources and measures 0 – 24mA (active, passive or 24V loop) and 0 – 24V with ±(0.1% + 0.005) precision.
Outputs can ramp automatically, step through four presets, or follow a custom range, and a live trend graph shows how the loop responds. It talks Modbus over RS485, runs 8 – 10 hours at 20mA output, and charges over Type-C.
Key Features
- 🔌 0 – 24mA active, passive and 24V loop with 0.01mA resolution
- ⚡ 0 – 24V voltage output and 0 – 30V voltage input
- 📶 Frequency / PWM output 0 – 9999Hz with adjustable duty cycle
- 📈 Auto ramp, presets and real-time curve
- 🖧 RS485 Modbus slave for PLC or PC configuration
- 🔋 3000mAh battery 26 h standby, Type-C charging
Technical Specifications
| Active current output | 0 – 24mA, ±(0.1% + 0.005), max load 750Ω |
|---|---|
| Passive current output | 0 – 24mA, external 0 – 30V supply |
| Voltage output | 0 – 24V, 0.01V resolution |
| 24V loop | 0 – 24mA |
| Frequency / PWM output | 0 – 9999Hz, ±2% |
| Current input | 0 – 24mA, ±(0.1% + 0.005) |
| Voltage input | 0 – 30V, ±(0.1% + 0.005) |
| Communication | RS485, Modbus slave |
| Display | 2.4" TFT colour, 240 × 320 |
| Battery | 3.7V 3000mAh, 4 – 6 h charge |
| Size | 82 × 27 × 112 mm |
| Weight | 165 g |
What's in the Box
- 1 × FNIRSI SG-003A loop calibrator
- Test leads and USB cable as supplied by FNIRSI