Close Focus - RayTek MARATHON FA Operating Instructions Manual

1-color/2-color fiber optic thermometer
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Technical Data
3.5.1.2 Close Focus 
Distance D to Object [mm]
D:S = 20:1 at focus point
Distance D to Object [mm]
D:S = 100:1 at focus point
Distance D to Object [mm]
D:S = 40:1 at focus point
10 
[inch]
FA1A/FA2A CF1
[inch]
FA1B/FA1C CF1
[inch]
FA2B CF1
Figure 7: Close Focus Spot Size Charts for FA models 
Distance D to Object [mm]
D:S = 20:1 at focus point
Distance D to Object [mm]
D:S = 100:1 at focus point
Distance D to Object [mm]
D:S = 40:1 at focus point
Marathon Series FA/FR
[inch]
FA1A/FA2A CF2
[inch]
FA1B/FA1C CF2
[inch]
FA2B CF2
 

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