Thermo Scientific HB-S200, Руководство пользователя

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Sarasota 200 Ultrasonic Multipath
Flowmeter
Section 4 INSTALLATION Page 4-2 Thermo Fisher Scientific
INSTALLATION
4.2 General
It is usually necessary for some preparatory work to be carried out prior to installation of the
flowmeter system. This work is often performed under a separate contract and typically
includes:-
•
Installation of supporting structures for transducer mounts, for example, piles in a river,
brackets on concrete channel walls.
•
Installation of ducts or cable tray for the interconnecting cables.
•
Installation of a suitable housing for the flowmeter and peripheral equipment. This could
be an existing building or a kiosk.
•
Provision of a power supply.
•
Provision of a PSTN connection.
The installation of the equipment on site follows the above. It is normal practice to carry out a
risk assessment and to write a method statement to be agreed by the client before starting
work. The installation work is often restricted to times when suitable site conditions apply.
It is recommended that the installer of the flowmeter should inspect the preparatory work prior
to mobilising resources for the installation.
4.3 Unpacking and laying out
If site and general assembly drawings were specified as part of the supply contract they will
normally have been supplied and accepted prior to delivery of the equipment. The drawings
will be a useful guide to checking the inventory of equipment delivered.
The equipment supplied should be carefully unpacked and checked for content and damage.
The transducers may have been supplied in rack assemblies ready to be fixed to the
supporting structure. There will normally be two or four racks (for in-line or crossed paths). In
large channels or those with complex shapes, there may be more than two racks, for
example, in a stepped channel with a low level channel and a wider high one.
If the racks have not been assembled, this may be carried out on site according to the
assembly drawings.
It is important to check that sufficient cable has been supplied for connecting transducers and
that suitable fixings for all the items have been supplied or separately procured.
4.4 Installing transducer assemblies
WARNING – Installing transducer racks may involve working near deep or
contaminated water and/or in confined spaces. Appropriate precautions and suitably
qualified personnel should be used.
The transducer rack assemblies should be installed in their prepared positions according to
the drawings and method statements.
Care must be taken not to damage the coaxial cables during this operation.
See Section 2.4 for transducer and junction box configuration.
Depth gauge transducers or transmitters may be fitted to one or more of the transducer racks
or have a separate fitting.