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Thermal DRI Range Table |
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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) |
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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) |
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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) |
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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. |
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Thermal Smart Detection Range Table |
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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) |
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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) |
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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. |
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Visible DORI Range Table |
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Lens |
6.8 to 251 mm |
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DORI Distance (Detection) |
95 to 3,515 m (311.68 to 11,532.15 ft) |
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DORI Distance (Observe) |
38 to 1,406 m (124.67 to 4,612.86 ft) |
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DORI Distance (Recognize) |
19 to 703 m (62.34 to 2,306.43 ft) |
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DORI Distance (Identify) |
9.5 to 351.5 m (31.17 to 1,153.22 ft) |
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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. |
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