ThermoView
®
TV40 Series
Users Manual, Rev. 1.1, Apr 2019
34
7.1.1 Wide Lens 0.75x
Field of View (FOV)
45° x 34° (horizontal x vertical)
Instantaneous Field of View (IFOV)
2.5 mrad (1 pixel)
Measurement Field of View (MFOV)
7.4 mrad (3 x 3 pixel)
Focus Range (infrared)
152 m
m to ∞ (0.5 ft to ∞)
Focus, fixed (visible)
600 mm (1.96 ft)
Table 7-2: Spot Sizes for Wide Lens 0.75x
Measuring distance
Thermal image (H x V)
Minimum detectable spot size
(1 pixel)
Minimum measurement area
(3 x 3 pixel)
0.3 m (1 ft)
0.249 x 0.183 m (0.8 x 0.6 ft)
0.7 mm (2.5 mil)
2.2 mm (7.4 mil)
0.5 m (1.6 ft)
0.414 x 0.306 m (1.3 x 1 ft)
1.2 mm (3.9 mil)
3.7 mm (11.8 mil)
1.0 m (3.3 ft)
0.828 x 0.611 m (2.7 x 2 ft)
2.5 mm (8.1 mil)
7.4 mm (24.3 mil)
5.0 m (16 ft)
4.14 x 3.06 m (13.3 x 9.8 ft)
12.3 mm (39.3 mil)
36.8 mm (117.8 mil)
10 m (33 ft)
8.28 x 6.11 m (27.3 x 20.2 ft)
24.5 mm (81 mil)
73.6 mm (243 mil)
Figure 7-1: Dimensions of ThermoView TV40 with Wide Lens
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