vanEssen TD-Diver DI8 Series, Руководство по эксплуатации продукта

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13
Installation in a Monitoring Well
Divers are normally installed below the water level/table in
a monitoring well. The depth at which a Diver can be
suspended depends
range. Further information about the Div
contained in the chapter 2
Technical Specification .
First determine the length of the non-stretch suspension
cable (part no MO500) based on the lowest groundwater
level. Provide for the required additional length for
attaching the cable to the suspension eye of the Diver and at
the upper end when you cut the wire to size.
Next use cable clips (part no MO310) to attach the ends of
suspension eye, respectively.
To determine the distance of the pressure sensor in the
monitoring well requires the precise length of the cable to
be known, to which the distance to the location of the
pressure sensor in the Diver must be added to obtain the
overall effective cable length. This is depicted in the
diagram below.
It is also possible to install the Diver with a communication
cable (part no AS2xxx). This cable allows you to readout the Diver at the top of the monitoring well by
using a USB interface cable (part no AS327).
Note that in small diameter wells the installation and removal of the Diver may affect the water level.
If the TD-Diver replaces a Mini-Diver (part no DI5xx), Micro-Diver (part no DI6xx) or Cera-Diver (part no
DI7xx), the effective cable length must be decreased by 19 mm so that the position of the measuring
point, i.e. the pressure sensor, remains at the identical elevation.
Installation in Surface Water
If a Diver is used in surface water it is important that there is
s sensor.
Sedimentation, algae and plant growth should be minimized
as much as possible to ensure the Diver measures the
surrounding water level.
Position the Divers deep enough so that they remain
below a possible ice layer.
A steel protective cover that can be locked should be used to
prevent vandalism or theft of the Diver.
In the picture on the right a steel protective cover attached to
a wooden post is shown. Inside the protective cover is a
monitoring tube/screen containing a Diver to measure the
l