B-526-10N-E
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6.2 Strainer
(1) The strainer should be located as close to the flowmeter as possible.
(2) Suggested mesh of the strainer net is given in Table 6.3 below.
Table 6.3 Strainer Net Mesh Number
Meter Size
Net Mesh
82 to 84
30
85 to 88
25
(3) To facilitate servicing the strainer net, provide above the body a working space of about the height of the
body.
(4) To simplify disassembly and inspection, a drain valve and a piping for drainage should be provided.
(5) A plugged strainer will cause gas bubbles while making a volatile liquid measurement.
(6) To prevent the net from breaking due to plugging, use pressure gages upstream and downstream of the
strainer as differential pressure gages. A breakage may cause the net to jam in the flowmeter.
6.3 Air Eliminator
(1) Install downstream of the pump and upstream of the flowmeter.
(2) As a rule, regulating valves, orifices, or other flow restricting devices, should not be provided between the
air eliminator and flowmeter. They may cause gas bubbles while making a volatile liquid measurement.
However, provision of a control valve may be beneficial to give necessary back pressures in certain
applications, such as pumping heavy oil from a barge or tanker, where a large quantity of air is delivered
under pressure.
(5) On a newly installed piping assembly, all pipes should be flushed to completely remove construction debris
and other foreign solids before connecting the flowmeter in place.
See the topic "Flushing the Piping Assembly" on page 18.
(6) The flow direction arrow on the meter body should point in actual direction of flow.
(7) Since the sensor in the UF-II flowmeter operates on the principle of sensing changes in magnetic flux
density, it must be isolated from the influence of any external magnetic flux. In order to minimize the
influence of external magnetic flux, select an installation location at least 5 meters away from existing power
equipment and conductors - potential sources of creating large magnetic and electric fields, such as motors
and generators.
Summary of Contents for ULTRA UF-II
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