Fluke 572 [13/22] Spot size
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Fluke 572 [13/22] Spot size

Fluke 572 [13/22] Spot size
13
572
STANDARD MODEL
Optical Chart
3000
120
1.0
0
0
24
SPOT DIA. (IN)
SPOT DIA. (mm)
DISTANCE: SENSOR TO OBJECT (mm)
DISTANCE: SENSOR TO OBJECT (IN)
FOCUS POINT D:S = 60:1 FAR FIELD D:S = 35:1
0.76 IN @ 46 IN
19 mm @ 1150 mm
1500
2500
100
60
1.2
2.3
2.9
29.0
58.0
72.0
2000
44.0
1000
500
250
100
24
23
30
0.9
0.81
0.82
1.51
1.85
2.5
19.8
108
84
72
48
20
36
46
0.87
CLOSE FOCUS MODEL
Optical Chart
500
20
1
0
0
0.93
25
23
SPOT DIA. (IN)
SPOT DIA. (mm)
DISTANCE: SENSOR TO OBJECT (mm)
DISTANCE: SENSOR TO OBJECT (IN)
FOCUS POINT D:S = 50:1 FAR FIELD D:S = 12:1
0.24 IN @ 11.8 IN
6 mm @ 300 mm
Close Focus
6
0.62
15,5
150
2
0.9
22
50
4
0.75
18,7
100
7.9
9.8
200
250
0.49
0.37
12,3
9,2
40
1000
2.81
70
The measured spot size depends on the dis-
tance between the object you are measuring and
the infrared thermometer.
The relationship between distance and spot size
is 60:1(Standard Focus) or 50:1 (Close Focus) at
the focus point. The D:S in the far field (>33ft/
10m) is 35:1 (Standard) or 12:1 (Close Focus).
Spot Size

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