MSA Senscient ELDS 1000 series, Руководство по эксплуатации

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Installation Design & Engineering
Senscient ELDS™
Rev 15 41
GB
Arrangement for Multiple ELDS™ Systems
For applications where three (3) or more ELDS™ systems are to be installed running along a
common border or fence line, the arrangement illustrated above is recommended. (The ELDS™
systems pictured here are displayed with Tx units coloured red and Rx units green in order to aid
interpretation of the diagram.)
Essentially, this arrangement utilises different heights on the mounting pole and also the ability to
mount the units either side of the pole to maximise the angular difference between Rx units that
have the potential to ‘see’ more than one Tx unit. In this example Rx 2 could potentially detect light
from Tx 4, however because of the mounting arrangement there is an angular offset between the
alignment of Tx 4 and Rx 2 which will minimise the reception of light from this non-paired Tx.
This arrangement utilises both the horizontal and the vertical variation of unit mounting to
achieve the maximum possible angular separation. This alternating pattern can be
repeated as many times as is necessary to cover the entire length of the border or fence
line that is to be monitored.
The ‘horizontal’ offset of Rx units achieved by this arrangement when using a standard 4”
mounting pole and Senscient mounting brackets is 0.4m. The vertical variation can be greater than
this but the maximum value that can be adopted will depend on local site restrictions (height of
poles, possible obstructions etc.).
Senscient recommends that a minimum height variation on the Tx poles of 0.5m be
adopted. Using larger height variations than this minimum will be beneficial, especially
when systems are operating over path-lengths longer than 50m.
Tx 1
Tx 2
Rx 1 (front)
Rx 2 (rear)
Rx 3 (rear)
Rx 4 (front)
Tx 3
Tx 5
Tx 4
Tx 1
Rx 1
Rx 2
Tx 2 (top)
Tx 3 (bottom)
Rx 3
Rx 4
Tx 5 (top)
Tx 4 (bottom)
Rx 5
Rx 5
Plan View
Side View