LumaSense Technologies IGA 6/23 Advanced - Manual (Page 20)

IGA 6/23 Advanced Manual Controls and Installation · 20
Aperture D for all temperature ranges is 13 to 15 mm with the aperture being the effective
diameter of the lens. This is dependent on the optical setting. The largest value applies to a very
small measuring distance, while the minimum value applies to the largest measuring distance.
Measuring
Distance
a [mm]
Spot Diameter
M [mm]
MB 10
Spot Diameter
M [mm]
MB 13
Spot Diameter
M [mm]
MB 18
210 4.2 2.1 0.6
300 6 3 0.9
500 10 5 1.5
800 16 8 2.3
1300 26 13 3.7
2000 40 20 5.8
5000 100 50 15
Examples of Spot Sizes in Relation to Measuring Distance
Note: Effective aperture D for all temperature ranges is 13 mm (focused to longest
distance) to 15 mm (focused to shortest distance).
Focused spot sizes between the listed distances can be found by linear interpolation between
the listed values.
3.3.2 Deviation from the focused measuring distance
Spot sizes for non-focused distances (shorter or longer than the focused distance) may be
calculated by using the formula below.
Formula for Calculating Spot Sizes
The InfraWin software also includes a Spot Size Calculator that calculates the data for the
non-focused regions, if you enter the values of aperture D, focused measurement distance a,
and focused measuring field diameter M as found in the above table (see section 3.3.1).
3.3.3 Finding the right measuring distance
The measuring distance can be set using the Focus Adjustment Screw on the back of the device.
The focused distance value can be adjusted at all distances between 210 mm and 5000 mm. To
focus, turn the focus adjustment set screw to make the target image appear sharp and clear.
Note: The optics are manually focusable with a measuring distance of a = 210 to
5000 mm.