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| Product Name | YUEFENG SBDY-1P Digital whiteness Meter | YongLiDa SBDY-I Digital whiteness Meter |
| Product Price | $509.00 | $490.00 |
| Details | Details | |
| Model comparison | ||
| type | desktop | desktop |
| Whiteness | Blue light whiteness | Blue light whiteness |
| Measuring range | 0~100 | 0~100 |
| Sexual repeability | ≤0.2 | ≤0.3 |
| Indication accuracy | 0.1 | 0.1 |
| Measurement aperture | f21 ~ 30mm | f21 ~ 30mm |
| Parameter comparison | ||
| Measurement Range | 0~100% | 0-100% |
| Precision | 0.1 | |
| Zero drift | ≤0.1/10min | ≤0.2 |
| repeatability error | ≤0.2 | |
| Indication Stability | ≤0.2/10min | |
| Measurement aperture | Φ30mm | 30mm |
| Measurement direction | R457 blue light whiteness | |
| test condition | 45/0 | 45℃ |
| Illuminant | D65 | |
| Display mode | Digital or LCD display | digital display |
| power supply | 220V±10% | |
| Power | 35VA | |
| output | RS232 printing interface | |
