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L18
Incremental linear encoder
Optical linear encoder L18 is an incremental linear displacement measuring device that can have up to 2.040 measuring length, grating period of ±20 µm or ±40 µm, and accuracy that can reach up to 3 µm.
Mechanical data
| Measuring lengths (ML), mm | 70; 120; 170; 220; 270; 320; 370; 420; 520; 620; 720; 820; 920; 1020; 1140; 1240; 1340; 1440; 1540; 1640; 1740; 1840; 1940; 2040 (mounting spar optional up to ML 1240, mandatory from ML 1340 to 2040) |
| Accuracy grades to any meter within the ML (at 20°C) | ± 10; ±5; ±3 μm (optional) |
| Grating period | 20 μm; 40 μm (optional) |
| Reference marks (RI) | standard for ML ≤ 1020 mm: 35 mm from both ends of ML standard for ML ≥ 1140 mm: 45 mm from both ends of ML optional: one RI at any location, or two or more RI’s separated by distances of n x 50 mm or distance-coded |
| Max. traversing speed | when interpolation factor is 1,2,5,10: 1 m/s when interpolation factor is 25: 0.5 m/s when interpolation factor is 50: 0.4 m/s |
| Required moving force with sealing lips | < 3 N |
| Protection (IEC 529) | without compressed air: IP53 with compressed air (optional): IP64 |
| Weight | 0.4 kg + 0.8 kg/m |
| Operating temperature | 0…+50°C |
| Storage temperature | -20…+70°C |
| Permissible vibration (40 to 2000 Hz) | ≤ 30 m/s² |
