Lumasense-technologies IS 6 Advanced Manuel d'utilisateur télécharger pdf (Page 20)

IS 6 Advanced / IGA 6 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]

IGA 6 Advanced

IS 6 Advanced

210

300

500

800

1300

2000

5000

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.

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Lumasense-technologies IS 6 Advanced Manuel d'utilisateur Page 20