2-2
IM 01F06A00-01E
2. INSTALLATION
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Piping support
Typical vibration immunity level is 1G for normal piping
condition.Piping support should be fixed in case of over 1G
vibration level.
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Installation direction
If a pipe is always filled with liquids, the pipe can be
installed vertically or at inclined angle.
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Adjacent pipes
The process pipline inner diameter should be larger than
the digitalYEWFLO inner diameter.
Use the following adjacent pipe.
Model Code DY015 up to DY050 : Sch 40 or less.
DY025-/R1 up to DY080-/R1
DY040-/R2 up to DY100-/R2
Model Code DY080 up to DY300 : Sch 80 or less.
DY100-/R1 up to DY200-/R1
DY150-/R2 up to DY200-/R2
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Straight pipe length
*D: piping diameter
*K-factor may be influenced about 0.5% in case that straight
pipe length of upstream is less than values below.
Table 2.1 Installation
Refer to each element above for
straight pipe run.
Reducer pipe:
Ensure the upstream straight pipe length to be 5D or more, and the
downstream straight pipe length to be 5D or more for per reducer
pipe.
Valve position and straight pipe length:
■
Install the valve on the downstream side of the flowmeter.
The upstream straight pipe length dependent on the element
located on the upstream such as reducer/expander, bent and
etc., refer to description as above. Keep 5D or more for
downstream straight pipe length.
■
In case the valve has to be installed on the upstream of the
flowmeter, ensure the upstream straight pipe length to be 20D
or more, and the downstream straight pipe length be 5D or more.
Piston-type or plunger pump:
Install the accumulator on the upstream side of digitalYEWFLO to
reduce fluid vibrations.
Expander pipe:
Ensure the upstream straight pipe length to be 10D or more, and
the downstream straight pipe length to be 5D or more for per
expander pipe.
Bent pipe and straight pipe length:
1. Single bent pipe
2. Double bent pipe; coplanar
3. Double bent pipe; non coplanar
Fluid vibration:
For a gas line which uses a position-type or roots-type blower
compressor or a high-pressure liquid line (about 1MPa or more)
which uses piston-type or plunger-type pump, fluid vibrations may
be produced.
In these case, install valve on the upstream side of digitalYEWFLO.
For inevitable fluid vibration, put a vibration damping device such as
throttling plate or expansion section in the upstream side of
digitalYEWFLO.
Description
Figure
1.
2.
3.
digitalYEWFLO
Flow
5D or more
Reducer
5D or more
digitalYEWFLO
Flow
10D or more
Expander
5D or more
digitalYEWFLO
F01.01.EPS
Flow
digitalYEWFLO
digitalYEWFLO
Valve
5D or more
20D or more
digitalYEWFLO
Flow
10D or more
5D or more
digitalYEWFLO
Flow
10D or more
5D or more
digitalYEWFLO
Flow
20D or more
5D or more
