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Version 1.4 May 09
4.4 Storage
All equipment should be stored in an environment that is protected from direct
sunlight. It is recommended that cables be stored in a dry environment to prevent
moisture migrating along inside them in the event of prolonged submersion of
exposed conductors.
During operational checks and establishing zero values, it will be necessary to
submerge the VW piezometers. Subsequent exposure to sub-zero temperatures
(Continued on page 10)
copies should be taken to site.
CHECK the piezometer ‘Zero Readings’
against the factory ‘Zero Readings’ on
arrival to ensure they have not changed
due to damage during transportation. To
do this, connect a Vibrating Wire readout to
the bare cable ends (Black and Red
conductors). – See readout manual for
connection guidance.
*NB If the readout display is in
‘Period’ units ( eg 0.03612 ) a
calculation must be performed to
convert to Hz2/1000 ( Linear Digits )
units, since the calibration sheet is
presented in Hz2/1000 units. The
Geosense Readout model VW200
displays the readings in ‘Period’. The
RST readout / logger unit Model
Number VW2106 displays the readings
in Linear digits. See Section 6 of this
manual for more information on units
and conversion routines.
Prior to carrying out a ‘Zero Reading’
CHECK, ensure that the piezometers have
been stored in a reasonably stable
temperature for at least 30– 60 minutes.
Record the values displayed on the readout ( and units ) against the piezometer
serial numbers. If these ‘out of the box’ CHECK readings show significant differences
( +/- 40 digits ) to the zero pressure values on the calibration sheets, contact MGS
Geosense for assistance. ( It should be noted that the ‘CHECK Readings WILL be
affected by the atmospheric pressure & altitude ).
If components are missing or damaged, contact the delivery company, the supplier
and / or MGS Geosense.
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