IM 1E7B0-02E
4-9
4. INSTALLATION
4.3.3
Nominal Diameter 50 mm(2in.)
to 300 mm(12in.) Wafer Type
IMPORTANT
Please use appropriate bolts and nuts according
to process connection. In case stud type of
through bolts are used, be sure outside diameter
of a shank is smaller than a thread ridge’s one.
Please use compressed non-asbestos fiber
gasket, PTFE gasket or the gasket which has
equal elasticity. In case of optional code/FRG,
please use rubber gasket or others which has
equal elasticity. Be sure the inner diameter of
the gasket does not protrude to inner piping.
(Refer to Table 4.3.8)
(1) Mounting Direction
Please mount the Magnetic Flowmeter matching the
flow direction of the fluid to be measured with the
direction of the arrow mark on the flowmeter.
IMPORTANT
If it is impossible to match the direction, please
never remodel to change direction of the con-
verter. In case the measuring fluid flows against
the arrow direction, please refer to the section
6.3.6 or 7.2.8 Reversing Flow Direction.
(2) Mounting Centering Devices
To keep concentricity between the Flowmeter and
pipes, centering devices must be used. Pass two
through-bolts through the four centering devices (two
for each) and lower adjacent holes of both flanges.
(Refer to Figure 4.3.4)
Please give attention to the nominal size and flange
ratings of the centering devices. (Refer to Table 4.3.7)
(3) Positioning Flowmeter
Position the Flowmeter coming in contact four center-
ing devices with Mini-Flanges. At this time, pay
attention to avoid four centering devices come in
contact with Housing. In case stud type of through-
bolts are used, position them coming in contact four
centering devices with thread of the bolts. (Refer to
Figure 4.3.4) After positioning the Flowmeter, pass
remaining through-bolts to remaining holes.
NOTE
When installing a size 150mm with JIS F12
(JIS75M) flange, please displace in circumferen-
tial direction slightly because the cover of
electrode chamber will interfere against the bolts.
(4) Tightening Nuts
Please tighten the bolts according to Torque Values in
Table 4.3.5. In case of PVC piping, please select
optional code/FRG, use rubber gasket and tighten with
the torque value in Table 4.3.6.
CAUTION
In case of PFA lining type as the lining material
is Fluorocarbon PFA, it is possible that nuts
loose by its character as time passes. Please
tighten the nuts regularly.
Please be sure to tighten the bolts following
prescribed torque values. Please tighten the
flange bolts diagonally with the same torque
values, step by step up to the prescribed torque
value.
Nuts
Flange
Gaskets(two)
Mini-flange
Housing
Through bolts
Centering devices(four)
Please use appropriate
bolts and nuts according
to process connection.
Horizontal Mounting
Vertical Mounting
Figure 4.3.4
Mounting Procedure
