dynasonics TFXL, Инструкция по установке и эксплуатации

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B. MOUNTING ORIENTATION ON THE PIPE
If the flow meter is applied to horizontal pipe, choose a mounting
position within approximately 45-degrees of 3 o’clock or 9 o’clock
on the pipe, assuming 12 o’clock to be to top of the pipe. These
positions provide optimum acoustic penetration into the moving
liquid. As illustrated in
Figure 5, placement at the top or bottom
of the pipe can result in poor sound penetration due to air
pockets (on the top of the pipe) or sediment (at the bottom of the
pipe).
It is best to plumb and orient the piping system so that it will be
completely full of liquid at all times—whether the liquid is flowing
or not. Typically, by slightly sloping the pipe in the upward
direction or orienting the check valve judiciously within the piping
system this can be accomplished.
If the flow meter is applied to vertical pipe with flow moving in an
upward direction, radial orientation does not matter.
Figure 5—
Mounting
Orientation on
Horizontal Pipes
NO
NO
45°
45°
YES
YES
FLOW METER MOUNTING ORIENTATION