<3. INSTALLATION>
3-10
IM 01E30D01-01EN
Table 3.3.8 Centering Device Identification (AXR Lay length code 2, PFA lining)
Flange
ratings
Size
mm (inch)
JIS
ANSI
DIN
10K
20K
F12
(75M)
150
300
PN10
PN16
PN40
50 (2.0)
B
B
—
B
F
—
—
F
65 (2.5)
B
B
—
B
G
—
F
—
80 (3.0)
B
F
H
F
C
—
G
—
100 (4.0)
B
F
H
C
H
—
F
—
150 (6.0)
C
D
D
C
E
—
C
—
200 (8.0)
C
D
D
D
E
C
C
—
*: Each centering device is engraved with a character as identification.
3.3.3 Nominal Diameter 25 mm (1.0 in.) to
200 mm (8.0 in.), Flange Type
IMPORTANT
Use bolts and nuts in compliance with the flange
ratings. Be sure to choose a gasket with inner
and outer diameters that does not protrude
inside the piping (Read Subsection 3.3.4). If the
inner diameter of the gasket is too large, or outer
diameter of the gasket is too small, fluid leakage
may result.
(1) Mounting Direction
Mount the flowmeter so that the flow direction of the
fluid to be measured is in line with the direction of
the arrow mark on the flowmeter.
IMPORTANT
If it is impossible to match the direction of
the arrow mark, the direction of the electrical
connection can be changed. Read Section 11.1
to do this properly.
In case the fluid being measured flows against
the arrow direction, read the parameter
J20:
Flow Direction
in this user’s manual.
(2) Tightening Nuts
Tighten the bolts according to the torque values
for the metal piping in Table 3.3.9. For PVC piping,
select an optional code of GA, GC, or GD, use
rubber gaskets and tighten the nuts to the torque
values for the PVC piping in Table 3.3.10.
For permeable fluids (such as nitric acid,
hydrofluoric acid, or sodium hydrate at high
temperatures), tighten the nuts according to the
torque values in Table 3.3.11.
CAUTION
For a flowmeter with fluorocarbon PFA lining,
it is possible that the nuts may loosen as time
passes, so tighten them regularly. Be sure to
tighten the nuts according to the prescribed
torque values. Tighten them diagonally with
the same torque values, step by step up to the
prescribed torque value.
