LumaSense Technologies IS 12-TSP - Handbuch (Seite 12)

IMPAC pyrometers IS 12-TSP · IGA 12-TSP
12
6.2 Laser targeting light
The laser point marks the center of the spot, not the exact size. On the focused measur-
ing distance the laser has its smallest spot size and is illustrated exactly (adjusting the
measuring distance see 7, Optics).
The laser targeting light can be used without affecting the measurement.
7 Optics
The pyrometers are equipped ex works with a focusable optics. With this focusable optics the best possible
distance ratio can always be adjusted for each distance within the optics limits (the smallest and largest
value of each optics for the measuring distance in the table).
Focusable optics IS 12-TSP Focusable optics IGA 12-TSP
Measuring
distance
a [mm]
Spot size M
98
[mm] Spot size M
98
[mm]
Objective
length
S [mm]
all temperature ranges 200 ... 1020°C 250 ... 1400°C
275 0.7 2 1.1 30
400 1.1 3 1.6 9
Optics
1
520 1.5 4.2 2.2 0
385 1 2.7 1.5 30
700 1.9 5.2 3 8.5
Optics
2
1125 3.4 8.5 4.9 0
540 1.4 3.5 2 30
3000 8.5 23 13 3
Optics
3
9000 26 72 38 0
Aperture D [mm] * ) 13.5 ... 17 13.5 ... 17
* ) The aperture is the effective lens diameter. It is depending on the objective length. The biggest aperture value (17 mm) belongs to the fully
extended objective (S = 30 mm), the smallest aperture value (13.5 mm) for objective length S = 0. Intermediate values have to be interpo-
lated (e.g. calculating the spot size if the measuring distance differs from the adjusted distance). The spot size calculator included in the In-
fraWin software is the easiest way to calculate the spot size if the measuring distance differs from a fixed adjusted (see 10.13, Spot size cal-
culator).
7.1
Adjusting the required measuring distance
The required measuring distance must be adjusted to achieve the spot
sized mentioned in the tables above.
For releasing the optics has to be turned anticlockwise. Then it can be
pushed or pulled to find the correct measuring distance (see 6, Sight-
ing). For fixing the optics has to be turned clockwise.
Note: The measuring object has to be bigger or at least
as big as the spot size of the pyrometer.
7.1.1 Adjusting the measuring distance with help of the table
The table mentions the minimum and maximum measuring distance for each of the
3 focusable optics. This corresponds to the longest or the shortest objective length.
As an example a further value between max. and min. is shown. The objective
length “S” can be measured with a caliper.
7.1.2 Other measuring distances
For all other measuring distances the optics will be adjusted with help of the view
finder or the laser targeting light (see 6, Sighting).
release
fix
Push / pull
S
(Objective
length)