Yokogawa digitalYEWFLO (DY) - Manual (Page 17)

<3. INSTALLATION>
3-7
IM 01F06A00-01EN
• Four collars are supplied for 1/2 inch (15mm) to
1- 1/2inch (40mm), 2 inch of JIS 10K or ANSI
class 150, and 3 inch of ANSI class 150. Install
the instrument as illustrated in Table 3.3.
• If the adjacent fl anges have eight bolt holes,
insert the stud bolts in the holes on the
instrument shoulder.
• Stainless steel stud bolts and nuts are available
on order. When they are to be supplied by the
user, refer to Table 3.2 for stud bolt length.
Gaskets must be supplied by the user.
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Pipeline Flange
Pipeline
2. Avoid mounting gaskets which protrude into the
pipeline. This may cause inaccurate readings.
Use gaskets with bolt holes, even if
digitalYEWFLO is of the wafer type.
When using a spiral gasket (without bolt holes),
confi rm the size with the gasket-manufacturer,
as standard items may not be used for certain
fl ange ratings.
Table 3.2 Flange Rating
Size
mm
(inch)
Flange Rating
Major Diameter of
External Threed
of Stud Bolt d
(mm)
Length
(mm)
15mm
(1/2B)
JIS 10K, 20K/DIN 10,
16,25,40
JIS 40K
ANSI 150, 300, 600
12
16
12.7
160
160
155
25mm
(1B)
JIS 10K, 20K, 40K
ANSI 150
ANSI 300, 600
DIN 10, 16, 25, 40 16
12.7
15.9
12
160
155
160
160
40mm
(1-1/2B)
JIS 10K, 20K/DIN 10,
16, 25, 40
JIS 40K
ANSI 150
ANSI 300, 600
16
20
12.7
19.1
160
170
155
170
50mm
(2B)
JIS 10K, 20K, 40K/ DIN
10, 16, 25, 40 ANSI
150, 300, 600
16
15.9
200
200
80mm
(3B)
JIS 10K/DIN 10, 16,
25, 40
JIS 20K, 40K
ANSI 150
ANSI 300, 600
16
20
15.9
19.1
220
240
240
240
100mm
(4B)
JIS 10K/DIN 10, 16
JIS 20K/DIN 25, 40
JIS 40K
ANSI 150
ANSI 300
ANSI 600 16
20
22
15.9
19.1
22.2
220
240
270
240
240
270
Stud Bolt
Collar
d
Length "
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