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Filling/ Dosing
For filling and dosing the valve has to be mounted between meter and discharge. The shorter the pipe section between meter and discharge,
the higher the accuracy. Fast opening and shutting of the valve should be avoided (pressure hammer). Pressure hammers damage the
meter.
Remote processing, ancillaries
Any backflow must be avoided on meters equipped with pulsers for remote processing. If this cannot be achieved by appropriate plant
design, a non-return valve should be fitted.
Electrical circuit
Electrical circuits and installations are subject to legal prescriptions which must be observed when planning the installations. Electrical
installations must only be executed by professional experts. In the layout of the installation, the following factors should be taken into
account during plant design:
• ancillary connected to or after the meter
• maximum cable lengths with/without amplifier
• connection boxes, cable guides
• environmental disturbances
Electrical installations in hazardous areas are subject to special requirements. The pulsers must be powered by “Ex”-supplies from the
non-hazardous area. Consult an “Ex”-specialist.
Mounting
Place and position of mounting
• Easy access for reading the meter and controlling ancillary equipment is essential.
• Observe the operating temperature range (-10...60°C).
• Observe plant conception.
Preparation for the mounting
Check meters and mounting material. Compare the data of the meter with the expected maximum conditions in the installation. They may
not exceed the meter data:
• Flow rate max. (Q
max
l/h)
• Service pressure max. (PN bar)
• Temperature max. (T)
• Threaded connections, flanges and seals (gaskets)
• Fixations for the meter
• Resistance to measured liquid and temperature.
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