MSA Senscient ELDS 1000 series, Operating Manual

Page: 73 / 184

Installation & Commissioning
Senscient ELDS™
Rev 15 73
GB
Making Alignment Adjustments
The Receiver and Transmitter units of ELDS OPGDs are mounted on brackets that allow precision
alignment adjustments in the horizontal and vertical directions.
Precise adjustments of horizontal and vertical alignment can be made using the opposed pairs of
M6 adjustment screws on the mounting bracket assembly. A pair of M6 Allen keys is provided with
each unit to enable the adjustment screws to be rotated.
Tips :

Achieving a good alignment is best performed iteratively. Make alignment adjustments in one
axis to bring the cross-hairs nearer to the centre of the lens-window, and then make some
adjustments on the other axis. Expect to go back and forth between the horizontal and vertical
axes a few of times before achieving a good final alignment result.

Initially, it is likely that the alignment will be quite a long way from ideal. When it is necessary to
make relatively large alignment adjustments it is best to identify which direction needs to be
moved in, and to loosen off the adjustment screw that would oppose such a movement. This
enables the aligner to drive the adjustment in the desired direction without the resistance of the
opposing adjustment screw.
Adjusting screws for
horizontal alignment
Adjusting screws for
vertical alignment