YOKOGAWA ADMAG AXR User Manual page 19

Table 3.3.3 Wafer Type Tightening Torque Values for Metal Piping and Permeable Fluids
Gasket types
within flowtube
Gasket types
for user's
flange
Flange ratings
Size
JIS 10K, ANSI Class 150, and DIN PN10
mm (inch)
25 (1.0) 34.9 to 40.1 / {355.9 to 408.9} / [308.9 to 354.9] 35.2 to 40.1 / {358.9 to 408.9} / [311.5 to 354.9] 32.3 to 37.1 / {329.4 to 378.3} / [285.9 to 328.4]
40 (1.5) 53.5 to 61.5 / {545.5 to 627.1} / [473.5 to 544.3] 54.2 to 61.5 / {552.7 to 627.1} / [479.7 to 544.3] 56.4 to 61.5 / {575.1 to 627.1} / [499.2 to 544.3]
3.3.2 Nominal Diameter 50 mm (2.0 in.) to
200 mm (8.0 in.), Wafer Type
IMPORTANT
Use bolts and nuts in compliance with the flange
ratings. When stud-type through-bolts are used,
be sure the outside diameter of the shank is
smaller than that of the thread ridge. 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 this parameter J20:
Flow Direction in this user's manual.
Tightening torque values for PFA lining type (N-m / {kgf-cm} / [in-lbf])
PTFE-sheathed non-asbestos gasket (optional code BSF), or the equivalent in hardness
JIS 20K, ANSI Class 300, and DIN PN16
<3. INSTALLATION>
No gasket (standard)
(2) Mounting Centering Devices
To maintain concentricity of the flowmeter with the
pipes, install centering devices. From the process
piping side, pass two through-bolts through the
four centering devices (two for each bolt) and
the adjacent two holes (the lower two holes for
horizontal mounting) of both of the flanges (Read
Figure 3.3.2). Use the appropriate centering
devices according to the nominal diameter and the
flange ratings. The centering devices are engraved
with an identifying character. Use the appropriate
ones which meet the required specifications by
reading Table 3.3.7 and Table 3.3.8.
(3) Positioning the Flowmeter
Position the flowmeter so that the Mini-flanges and
the centering devices come in close contact with
each other. Be careful to prevent the four centering
devices from coming into contact with the housing.
If stud-type through-bolts are used, position them
in such a way that the four centering devices come
in contact with the bolt threads (Read Figure 3.3.2).
Pass the other through-bolts through from the
process piping side.
3-7
DIN PN40
IM 01E30D01-01EN