Digi Sm-500 Scale User Manual
The Complete Digi SM-500 Scale User Manual: Setup, Operation, Calibration, and Troubleshooting
Product Name: Digi SM-500 Precision Electronic Scale
Capacity: 500 grams (0.5 kg)
Readability/Accuracy: 0.01g or 0.1g (depending on variant – confirm on your unit’s faceplate)
Power Supply: 4 x AAA batteries or DC 6V/1A adapter (not always included)
10. Frequently Asked Questions (FAQ)
Q: Can I use the Digi SM-500 to weigh gold or silver?
A: Yes. Switch to “ct” (carat) or “gn” (grain) mode. For bullion, ensure you have the 0.01g resolution version. Always use calibration before precious metal weighing. digi sm-500 scale user manual
Q: My scale shows different weights if I place the item near the edge vs. center.
A: This indicates sensor damage or overload history. Check that the pan is seated properly. If the issue persists, the load cell is likely bent – contact Digi support. The Complete Digi SM-500 Scale User Manual: Setup,
Q: Can I weigh liquids?
A: Yes, using the tare function. Place an empty cup on the scale, press TARE, then pour liquid. Do not spill liquid onto the scale body. What NOT to do
Q: What does the “STABLE” indicator actually mean?
A: The internal processor requires three consecutive identical readings within the tolerance band before displaying “STABLE”. Lightly touching the table will cause the indicator to turn off.
Q: Why does the scale turn off when I try to weigh heavy items?
A: The auto-protect circuit engages if you approach 500g too quickly. Always place heavy items slowly. Below 490g, it should not shut off.
7. Display Messages and Error Codes
| Message | Meaning | Action Required |
|---------|---------|----------------|
| 0.00 or 0.0 | Normal zero reading | Ready to weigh |
| EEEEE or O_Ld | Overload (>500g + tare) | Remove weight immediately |
| LO | Low battery | Replace batteries |
| UnSt | Unstable environment (vibration/wind) | Move scale to stable surface |
| CAL or CAL E | Calibration error | Repeat calibration; check weight |
| _ (dash) or Err 2 | Initialization failure | Turn off, remove pan, restart |
| tArE flashing | Tare memory full (max capacity remaining < 0) | Remove all items, press TARE to reset |
| PCS Err | Average piece weight too low (<0.01g) | Use larger sample size |
What NOT to do
- Never use compressed air – It can blow dust into the load cell mechanism.
- Never submerge the scale or pan (if pan has a stem with electronics).
- No solvents – Avoid acetone, alcohol, or abrasive cleaners on the plastic housing.
Turning the Scale On/Off
- On: Press and hold [ON/OFF] for 2 seconds. The display will show all segments, then countdown to “0.00” or “0.0”.
- Off: Press and hold [ON/OFF] for 2–3 seconds until “OFF” appears.