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7. Piping
For separator discharge pipes, up to 75 mm OD a standard "T"-type junction of the welded
or screwed type is satisfactory for the tapping point. For the separator discharge pipes of
80 mm OD and above a sample probe should be employed which protrudes into the
discharge piping by approx. 25 % of the ID of the pipe.
If connection to a vertical section of the separator outlet piping is impractical, the tapping
may be made into the side of the horizontal pipe. Avoid top or bottom entry.
7.1 Piping OMD-24
Connect the OMD-24 Monitor to the sample point of the oily-water separator outlet and
to a source of oil free water employing 6 mm, 10 mm OD copper or stainless-steel pipe.
The sample point should be located on a vertical section of the separator outflow piping
to minimize the effects of any entrained air. The tapping point should be at a level above
the outlet of the monitor to ensure a proper sample flow rate.
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