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| Brand | Yuntang |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Region Classification | Domestic (China) |
| Model | YT-321 |
| Price | USD 170 (FOB) |
| Measurement Principle | Pulse-Echo Ultrasonic |
| Range (Steel) | 0.75–350 mm |
| Standard Probe Range | 1–250 mm |
| Resolution | 0.1 mm |
| Sound Velocity Adjustment | 1000–9999 m/s |
| Operating Temp. | −10 to +60 °C |
| Accuracy | ±(1% H + 0.1) mm (H = actual thickness) |
| Power | Two AAA alkaline batteries |
| Battery Life | ~200 hours |
| Dimensions | 130 × 70 × 25 mm |
| Weight | 0.2 kg (instrument only) |
| Display | High-brightness LED backlight |
| Compliance | Designed per ISO 2400:2019 (Ultrasonic thickness measurement — Calibration and verification procedures) |
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