The premium A3390 offers superior 0.1% frequency accuracy and 4000 counts resolution. With auto/manual ranging and comprehensive measurement capabilities including 1000A current, it’s designed for professional electrical engineers and advanced technicians.
Highlights
✅ Ultra-Precise Frequency – ±0.1% accuracy
✅ High Current Capacity – Measures up to 1000A
✅ Professional Grade – 4000 counts with auto-ranging
✅ Complete Toolkit – All essential electrical parameters
✅ Ergonomic Design – Lightweight with clear backlit display
Specifications
| Category | Range | Accuracy |
|---|---|---|
| DC Voltage | 400m/4/40/400/600V | ±(0.5% + 3d) |
| AC Voltage | 4/40/400/600V | ±(1.0% + 0d) |
| AC Current | 400/1000A | ±(2.5% + 3d) |
| Resistance | 400Ω-40MΩ | ±(0.5%-1.5% + 3d) |
| Frequency | 10Hz-1MHz | ±(0.1% + 3d) |
Application
Power distribution systems
Industrial machinery maintenance
Advanced electrical engineering
Professional equipment calibration
Comparison
| Feature | A3380B | A3383 | A3390 |
|---|---|---|---|
| Counts | 2000 | 4000 | 4000 |
| Ranging | Manual | Auto/Manual | Auto/Manual |
| Max Current | 500A | 400A | 1000A |
| Frequency | No | 10MHz | 1MHz |
| Temp Measure | No | Yes | No |
| Frequency Accuracy | N/A | ±0.5% | ±0.1% |
All models feature:
Double open jaw design (Φ40x43mm)
CAT II 600V safety rating
Compact 150g body
Backlit LCD display
60 pieces per carton