2 sighting, 1 thru-lens view finder, 2 laser targeting light – LumaSense Technologies IS 12-Al/S User Manual
Page 16: 3 optics, 1 measuring distance
IS 12 AI & IS 12-AI/S
Controls and Installation 16
3.2 Sighting
For exact aiming to the object, the pyrometers are equipped with a thru-lens view finder and an
additional laser targeting light
3.2.1 Thru-lens view finder
In the optimized thru-lens view finder, a circle marks the
exact position and size of the measuring spot.
3.2.2 Laser targeting light
In addition to the thru-lens view finder, the instrument
is equipped with a laser targeting light. The laser point
marks the center of the spot, not the exact size. The
laser targeting light can be used without affecting the
measurement.
3.3 Optics
The pyrometers are equipped ex works with one of the below mentioned optics. The smallest
spot size is shown for the specified measuring distance.
MB 10.5: 400...1050 °C
Optics
(meas. distance a)
Spot size M
90
1
(a
=
80
mm)
1.1 mm
2
(a
=
160
mm)
1.5 mm
3
(a
=
250
mm)
2.2 mm
4
(a
=
660
mm)
5.5 mm
5
(a
=
1300
mm)
11 mm
6
(a
=
5600
mm)
45 mm
Aperture D *
)
19 mm
*
)
The aperture is the effective lens diameter.
3.3.1 Measuring distance
The spot sizes, mentioned in the table above, will only be achieved at the measuring distances
of the corresponding optics. Decreasing or increasing the measuring distance enlarges the spot
size. In this case, make sure that the measuring object is at least as big as the spot size.
A tape can be used to determine the distance between object and pyrometer. The measuring
distance is always measured from the front of the lens.
The measuring object will be shown in the view finder of the pyrometer as a sharp image only in
the measuring distance of the corresponding optics (e.g. optics 1 at 80 mm). The circle in the
view finder marks the position and size of the spot.
The laser shows its smallest spot in the measuring distance of the corresponding optics (e.g.
optics 1 at 80 mm) and it marks the center of the spot, not its size.
Warning: 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. The instrument is equipped with a class II laser
that emits radiation.
Note: The pyrometer can measure objects at any distance but the object has to be
bigger than or at least as big as the spot size of the pyrometer in the measuring
distance.
MB 9: 350...900 °C
Optics
(meas. distance a)
Spot size M
90
1-P
(a = 112 mm)
2.5 mm
2-P
(a = 240 mm)
4.5 mm
3-P
(a = 660 mm)
11.5 mm
4-P
(a = 1300 mm)
22 mm
5-P
(a = 5600 mm)
92 mm
Aperture D *
)
26 mm
Thru-lens view finder