LumaSense Technologies ISR 6 Advanced - Manual (Page 19)

ISR 6 Advanced Manual Controls and Installation · 19
Note: The laser warning signs on the pyrometer should be easily viewable at all times,
even after it has been installed.
Laser Beam Safety Warning: The instrument is equipped
with a class II laser that emits radiation. To reduce the risk of
injury to the eyes, do not look directly into the targeting laser
and do not point the targeting laser into anyone's eyes.
3.3 Optics
3.3.1 Spot Sizes
The ISR 6 Advanced has a Vario optics, which can be manually adjusted at all distances between
210 mm and 5000 mm.
The table of spot sizes in relation to measuring distance shows examples of the pyrometer’s spot
size M [mm] in relation to the measuring distance a [mm] (min. 90% of the radiation intensity).
Increasing or decreasing the measuring distance will change the spot size.
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.
Note: In the 1-color (mono) mode, the pyrometer can measure objects at any distance
(whether focused or non-focused). However, the object has to be bigger than or at
least as big as the spot size of the pyrometer in the measuring distance.
In the 2-color (ratio) mode, the object can be somewhat smaller than the spot
diameter.
Temperature Range
600 …
1400 °C
700 …
1800°C
800 …
2500°C
1000 …
3000°C
Measuring Distance
a [mm]
Spot Diameter M [mm]
210 2.1 1.1 0.6 0.6
300 3 1.6 0.9 0.9
500 5 2.7 1.5 1.5
800 8 4.2 2.3 2.3
1300 13 6.9 3.7 3.7
2000 20 10.6 5.8 5.8
5000 50 27 15 15
Examples of Spot Sizes in Relation to Measuring Distance