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Installation - Mechanical
1. The flow sensor has NPT (National Pipe Thread) plumbing con-
nections. It is recommended that a paste type pipe sealant be
used on these threads. [Teflon tape sealant can be used as long
as it is applied in such a way that it will not enter the flow stream.
Pieces of Teflon tape can wrap around the turbine and impede its
rotation.]
2. The recommended mounting orientation would be any plane that
will place the axis of the turbine horizontal with respect to the
ground. See Illustration 1. The unit will operate satisfactorily with
its axis at angles other than horizontal, but side loading of the
bearing surfaces will lead to premature wear of the rotating parts.
3. For the best flow measurement results, place the inlet (See Note 1)
of the flow sensor at least 10 straight pipe diameters down-
stream from any fitting, valve, elbow, reducer, etc. that causes
non-stable flow conditions. Ideally, 5 straight pipe diameters should
be placed at the outlet of the sensor. If the sensor must be placed
closer to a source of non-stable flow than these recommended dis-
tances, some instability of the output signal may result. The aver-
age signal will be accurate.
(4)
Illustration 1:
Mounting Instructions