EJL-146C
8
subject to change or review without prior
notice.
Piping Precautions
(1) Design piping so that the flowmeter detector
pipe is always filled with the fluid being
measured, whether the fluid is flowing or not.
(2) The detector has no adjustable piping
mechanism. Install an adjustable short pipe
where needed.
(3) The required straight pipe length should
comply with the requirements as follows.
Table5. Required straight pipe length
Upstream
side
When using a 90°bent ,Tee,
diffuser, or fully opened valve
L
≧
5D
When using other types of
valves.
L
≧
10D
Downstream
side
When no valve plate protrudes
into the detector pipe.
L
≧
0
L: Required straight pipe length
D: Meter size
Piping materials (to be ordered separately)
Mating flanges: The
flowmeter
must
be
mounted with its detector pipe
connected between the flanges
in the pipeline. If no flanges
are used where the flowmeter
is to be mounted, mating flanges
are needed.
Adjustable short pipe: When both the upstream
and downstream pipe sections
cannot be adjusted laterally
along
the
pipeline,
an
adjustable short pipe may be
needed.
Reducers:
When the flowmeter with its
Meter size smaller than that of
the pipeline should be installed,
reducers are needed on both
ends of the flowmeter detector.
Reducers with pipe extensions: Reducers with
adjustable piping mechanism.
Gasket: Gaskets are needed between lining face and
connection piping.
