BYK
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| Brand | BYK |
|---|---|
| Origin | Germany |
| Model | A-4430 |
| Measurement Angles | 20° / 60° / 85° |
| Geometry | Single-beam, fixed-angle reflectance |
| Measurement Area | 9 mm × 18 mm (60°), 9 mm × 9 mm (20°), 7 mm × 72 mm (85°) |
| Gloss Unit (GU) Range | 20°: 0–2000 GU |
| 60° | 0–1000 GU |
| 85° | 0–160 GU |
| Repeatability | ±0.5 GU (0–99.9 GU), ±0.2% (100–2000 GU) |
| Reproducibility | ±1 GU (0–99.9 GU), ±0.5% (100–2000 GU) |
| Light Source | Tungsten filament lamp (2.5 V / 60 mA) |
| Detector | Silicon photodiode |
| Data Storage | 999 readings across 50 user-defined groups |
| Interface | RS232 |
| Compliance | ISO 2813, ASTM D523, DIN 67530, JIS Z 8741, BS 3900-D5 |
| Traceability | Calibrated against BAM (Bundesanstalt für Materialforschung und -prüfung) and NRC (National Research Council Canada) reference standards |
| Power | One AA alkaline battery (up to 10,000 measurements) |
| Dimensions | 55 × 148 × 72 mm |
| Weight | 500 g |
| Enclosure | Impact-resistant polymer housing with integrated calibration base |