Thermal Alignment; Optics - LumaSense Technologies IMPAC IN 5 plus Betriebsanleitung

IMPAC pyrometers series IN 5 plus
6.2

Thermal alignment

When measuring a hot object in front of a cooler background, it usually suffices to align the pyrometer to
achieve the highest temperature reading.
7

Optics

The pyrometers are equipped ex works with one of the following optics. These lenses are focusing to certain
distances. In these distances each lens achieves its smallest spot size. The spot size will enlarge in any
other distance (shorter or longer). Please notice that the measuring object must be as least as big as the
spot size.
The name of the optics (e.g. optics 300) shows the measuring distance in mm (e.g. 300 mm) in which it has
the smallest spot size (IN 5 plus, e.g. 6 mm).
The following drawings show the size of the spots in mm in dependence of the measuring distance. Values
between the mentioned data can be calculated by interpolation. The spot size for measuring distance 0 is the
aperture diameter of the optics.
IN 5 plus, IN 5-H plus
Measuring distance a [mm]
Optics 100
Measuring distance a [mm]
Optics 300
Measuring distance a [mm]
Optics 800
IN 5-L plus
Measuring distance a [mm]
Optics 100
Measuring distance a [mm]
Optics 300
Measuring distance a [mm]
Optics 800
0
Spot size M [mm]
15
0
Spot size M [mm]
15
0
Spot size M [mm] 15
0
100
Spot size M [mm]
15
0
Spot size M [mm]
15
0
Spot size M [mm]
15
300
200
100
2
18
35
600
300
6
22
800
16
300
200
1
17
33
500
300
3
15
800
8
1000
45
1500
36
1000
45
1500
28
2500
68
2500
71
13