Installation Of Plate Mounted Sensors - Geosense VWLSS-200 Installation Manual

V1.7 January 2021

4.2 Installation of Plate Mounted Sensors

For a Liquid Settlement System (VWLSS-200)
supplied with the plate option, use the following
guide:
1. Pour a layer of sand upon the surface plane
intended for installation of the Settlement Plate,
approximately 5 to 10 cm thick.
If the subsurface includes voids, a layer of geotextile
material should be placed under the sand to prevent
it migrating into the voids.
2. Spread out the sand and flatten to create a
compacted, smooth layer.
3. Place the Settlement Plate onto the sand layer with
the VW Transducer uppermost. Use a small spirit
level to ensure the plate is level. Putting force only
on the plate itself, firmly push the metal plate into
the sand, twisting slightly from side to side to ensure
that good contact is made.
4. Starting from the centre, pour a cover layer of sand
over the entire Settlement Plate, approximately 5 to
10 cm thick.
5. This is now a good time to do a final CHECK on the
function of the equipment, before completing the
backfill.
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