BeamMonitor BM+
35,0(6
15
Revision 02 EN - 02/2022
7.2.3
Align the device
For the BeamMonitor BM+, a perpendicular beam incidence with respect to the x-y plane must be ensured.
The laser beam should hit the inlet aperture in the center.
DANGER
Serious eye or skin injury due to laser radiation
If the ratio of the laser beam diameter to the inlet aperture is too large, increased scattered or di-
rected reflection of the laser beam (laser class 4) will occur during measuring operation. The hous-
ing of the BeamMonitor BM+ can heat up.
X
The 86 % laser beam diameter must not exceed 0.7 times the inlet aperture.
X
Especially in case of laser with high beam quality, the laser beam diameter must not exceed 0.6
times the inlet aperture. Otherwise, a falsification of the measuring results due to the cutting off of
border fields is to be expected.
This can lead to measurement errors, especially when determining the radius using the second mo-
ment method.
7.2.4
Mount the device
DANGER
Serious eye or skin injury due to laser radiation
If the device is moved from its calibrated position, increased scattered or directed reflection of the
laser beam occurs during measuring operation (laser class 4).
X
Mount the device in a way that it cannot be moved by an unintentional knock or cables being pulled
accidentally.
NOTICE
Damage / Destruction of the device
Too long fastening screws can damage internal components in the device.
X
The fastening screws must not be screwed in more than 10 mm into the housing.
There are four threaded holes M6 in the mounting surface of the housing for assembly on a support bracket
provided by the customer (see Fig. 7.2 on page 16 and Fig. 7.3 on page 17).
Please use at least four screws M6 to fasten the device. The total length of the screws depends on the di-
mensions of the customer’s support bracket.
