SG002 Digital Signal Generator and Portable Meter What it does and why you need it Simulates standard industrial signals (4–20 mA and 0–10 V) for testing, calibration, and troubleshooting of transmitters, PLC inputs, and control loops. Adjustable current output to 0–22 mA lets you exercise sensors and transmitters beyond the standard range for diagnostics and margin testing. Compact, portable design lets you bring a fullfunction signal source to the field for faster onsite problem resolution and fewer returns to the workshop. Key features Model: SG002. Signal outputs: 4–20 mA and 0–10 V. Adjustable current range: 0–22 mA. Power options: USB DC 5V external input, builtin lithium battery (3.7 V, 1100 mAh), or operate from PLCshared 24 V systems. Display and controls: 4digit digital tube display with 8level brightness adjustment; aluminum knob cap and electroplated buttons for precise, reliable control. Benefits and practical advantages Faster troubleshooting: Generate stable, repeatable signals on site to isolate transmitter, wiring, or PLC issues without removing equipment. Flexible power for any environment: Use the internal battery for remote jobs, USB power in the , or integrate into existing 24 V PLC power when available. Clear, usable readout: Brightnessadjustable 4digit display ensures readable values in workshops, cabinets, or outdoor daylight. Durable, precise control: Metal knob and plated buttons improve tactile feedback and longterm reliability in industrial use. Compatibility and performance notes Supports common industrial test standards (4–20 mA and 0–10 V) and extends current output up to 22 mA for expanded testing needs. Designed for onsite electrical debugging, equipment calibration, and industrial testing. Compatible with PLC systems and typical field transmitters. Typical use scenarios 1) Field transmitter calibration — Quickly simulate a 4–20 mA input to verify transmitter linearity, span, and zero without removing the transmitter from service. 2) PLC I/O verification — Inject 0–10 V or 4–20 mA signals to confirm PLC analog input behavior and ladder logic response during commissioning or maintenance. 3) Onsite troubleshooting and maintenance — Use battery power to isolate wiring or instrument faults at remote locations, then switch to USB or PLC 24 V power for extended testing. Physical and handling information Compact footprint for portability: approximately 3.5 x 2.7 inches, lightweight for easy carrying during site visits. Controls and enclosure designed for frequent field use; metal knob cap and electroplated buttons improve handling and durability. SG002 provides a straightforward, flexible tool for technicians who need a reliable signal source for calibration, testing, and troubleshooting in industrial settings.