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Project design, installation and service manual
Electromagnetic flowmeter FLONET FH30xx
Page 21 of 72
ELIS PLZEŇ a. s.
The movement of the fluid in piping should be continuous and stable. If a pump generates fluid pressure pulses (e.g. pneumatic pump), a suitable pulse damping device should be included in the piping.
Correct pump position
4.4.4 Suppression of the effects of closing valves
To eliminate the disturbing effects on the fluid flow velocity profile in the sensor and prevent the action of the cavitation phenomenon, the closing and throttling valves shall always be located after (at the output side of) the sensor.
Correct valve position
4.4.5 Suppression of vibration effects
Mechanical stresses and vibrations acting on the meter sensor might be detrimental to its function or integrity. It is therefore necessary to fix the position (support) the attached piping as close to the sensor housing as possible. It is assumed that the number of events involving particularly large stresses on the piping, such as filling or draining the piping system, or major fluid pressure changes, does not exceed
1,000 over the meter lifetime.
ELIS PLZE Ň a. s., Luční 425/15, 301 00 Plzeň, Czech Republic, phone.: +420 377 517 711, fax: +420 377 517 722 Es 90678K
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