Thermal DRI Range Table | ||||
Focal Length | 25 mm | 50 mm | 75 mm | 100 mm |
Detection Distance (Humans: 1.8×0.5m) | 735 m (2,411.4 ft) | 1,471 m (4,826.1 ft) | 2,206 m (7,237.5 ft) | 2,941 m (8,172.6 ft) |
Detection Distance (Vehicles: 4×1.5m) | 2,255 m (7,398.3 ft) | 4,510 m (14,796.6 ft) | 6,765 m (22,194.9 ft) | 9,020 m (29,593.2 ft) |
Recognition Distance (Humans: 1.8×0.5m) | 184 m (603.7 ft) | 368 m (1,207.4 ft) | 551 m (1,807.7 ft) | 735 m (2,411.4 ft) |
Recognition Distance (Vehicles: 4×1.5m) | 564 m (1,850.4 ft) | 1,127 m (3,697.5 ft) | 1,691 m (5,547.9 ft) | 2,255 m (7,398.3 ft) |
Identification Distance (Humans: 1.8×0.5m) | 92 m (301.8 ft) | 184 m (603.7 ft) | 276 m (905.5 ft) | 368 m (1,207.4 ft) |
Identification Range (Vehicles: 4×1.5m) | 282 m (925.2 ft) | 564 m (1,850.4 ft) | 846 m (2,775.6 ft) | 1,127 m (3,697.5 ft) |
Note: The table is only for reference and the performance may vary according to different environment. Note: The optimal detection, recognition, and identification distances are calculated according to Johnson’s Criteria. Detection Range: In order to distinguish an object from the background, the object must be covered by 1.5 or more pixels. Recognition Range: In order to classify the object (animal, human, vehicle, etc.), the object must be covered by 6 or more pixels. Identification Range: In order to identify the object and describe it in details, the object must be covered by 12 or more pixels. | ||||
Thermal Smart Detection Range Table | ||||
Focal Length | 25 mm | 50 mm | 75 mm | 100 mm |
Temperature Measurement (Object: 0.2 × 0.2m) | 59 m (193.6 ft) | 118 m (616.8 ft) | 176 m (577.4 ft) | 235 m (771 ft) |
Fire Detection (Object: 0.2 × 0.2m) | 147 m (482.3 ft) | 294 m (964.6 ft) | 441 m (1,446.9 ft) | 588 m (1,929.1 ft) |
Note: The table is for reference only. The distances within it are subject to actual conditions including atmospheric conditions, target size, the installation site, and more. | ||||
Visible DORI Range Table | ||||
Lens | 6.8 to 251 mm | |||
DORI Distance (Detection) | 95 to 3,515 m (311.68 to 11,532.15 ft) | |||
DORI Distance (Observe) | 38 to 1,406 m (124.67 to 4,612.86 ft) | |||
DORI Distance (Recognize) | 19 to 703 m (62.34 to 2,306.43 ft) | |||
DORI Distance (Identify) | 9.5 to 351.5 m (31.17 to 1,153.22 ft) | |||
Note: DORI (Detect, Observe, Recognize, and Identify) is a standard system (EN-62676-4) for defining the ability of a person viewing the video to distinguish persons or objects within a covered area. The numbers in this table do not reflect intelligent function distances. For intelligent function distances, refer to installation and commissioning manual/project design tool. | ||||
