RayTek MARATHON MM SERIES, Руководство по эксплуатации

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Technical Data
16
Rev.
D7 Jul 2017
Marathon MM
3.2 Optical Specifications
In all cases, make sure the target completely fills the measurement spot, see section 6.1.1 Distance to
Object , page 26.
The actual spot size for any distance, when the unit is at focus distance, can be calculated by using the
following formula. Divide the distance D by your model’s D:S number. For example, for a unit with D:S
= 300:1, if the sensor is 2200 mm (86 in.) from the target, divide 2200 by 300 (86 by 300), which gives you
a target spot size of approximately 7.3 mm (0.29 in.).
Figure 1: Spot Size Chart
All target spot sizes indicated in the optical diagrams are based on 90% energy.
3.2.1 Variable Focus
Model Focus Focus Range
Optical
Resolution D:S *
Smallest Spot Size
LT, MT, G5, 3M VF1 200 mm (7.9 in.) to 2200 mm (86.6 in.) 70:1 2.9 mm @ 200 mm
(0.11 in. @ 7.9 in.)
G7 VF1 200 mm (7.9 in.) to 2200 mm (86.6 in.) 100:1 2 mm @ 200 mm
(0.08 in. @ 7.9 in.)
1ML, 2ML VF1 300 mm (11.8 in.) to 2200 mm (86.6 in.) 160:1 1.9 mm @ 300 mm
(0.07 in. @ 11.8 in.)
1MH, 2MH VF1 300 mm (11.8 in.) to 2200 mm (86.6 in.) 300:1 1 mm @ 300 mm
(0.04 in. @ 11.8 in.)
* Optical Resolution is achieved for each focal point in the focus range
Mean Time Between Failures (MTBF) 10,000 operations (at T
amb
= 23°C/74°F)
D = Distance
S = Spot size