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The device and its accessories must only be used for their intended purpose and comply with safety regulations. Aquametro devices
are manufactured according to valid standards and guidelines. Aquametro guarantees the quality of the product in the context of its
General Terms of Business. The owner or operator will be liable for the correct installation as well as the appropriate handling of the
equipment upon its receipt. The instructions for assembly and operation are to be followed exactly.
Safety instructions
• The design of the plant must ensure that the meter cannot be damaged, especially from the effects of frost, torsion in the piping, ex-
cessive heat expansion of the piping, misaligned pipes during installation, intrusion of foreign bodies or silt-up.
• The clearance distance of the piping must be adhered to when mounting the meter. If using flanged connections, the correct num-
ber of connector elements must be fitted and they must be tightened with the correct torque in accordance with the screw manu-
facturer's instructions.
• Comply with the permissible operating data as defined on the type plate. Pressure test with a maxi-mum of 1.5 x the nominal pres-
sure (PN).
• Make sure that no hazardous fumes can build up in the piping and in the meter during commissioning, decommissioning and dis-
mantling.
• The meter must at all times be completely filled with liquid during operation.
• Check the meter periodically for tightness of the connections and for proper functioning.
• If work is to be done on the installation, before each intervention:
a) Release the pressure in the installation
b) If hazardous fluids are used, wear protective clothing and safety goggles
c) Place collecting vessel underneath the installation.
Recommendation
For optimal results from the differential measurement, you should only use meters of types VZEA or VZOA with special calibration.
1.
Plant design
1.1
Layout of piping
Easy access for reading the meter and controlling the ancillary equipment is important.
Mounting position
Do not mount the meter with the head pointing downwards. Straight stabilisation pipes are not necessary.
The layout of piping must ensure that the meter is at all times filled with liquid and that no inclusions of air or gas may occur.
The quantities consumed by all the users must be registered by the meter.
1.2
Layout of meter and accessories
If you use the meter for viscosities in excess of 5 mPa.s, or if it is mounted on the suction side, the pressure loss and the flow rate that
can still be attained should be determined with the help of the pressure loss curves (see Technical Information CONTOIL
Select the meter and the ancillaries according to the max. working conditions.
• Operating pressure and temperature
• Ambient temperature –10° C ... 60° C
• Resistance of the material against: liquid to be metered, working conditions
• Flow rate
Flow meters are to be selected according to the flow rate and not according to the pipe diameter. If necessary, adapt the pipework.
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