YOKOGAWA DY015, Руководство пользователя

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2-6 IM 01F06A00-01E
2. INSTALLATION
2.6 Installing the Vortex Flow-
meter
WARNING
The Vortex Flowmeter is a heavy instrument. Please
be careful to prevent persons from injuring whin it is
handled.
Before installing the instrument verify the following. The
direction of flow should match to the arrow mark on the
instrument body. When changing the orientation of the
terminal box, refer to "7.1."
Installation of Vortex flowmeter of the wafer and flange type
is shown in Table 2.3.
When installing the wafer type vortex flowmeter, it is
important to align the instrument bore with the inner diameter
of the adjacent piping.
To establish alignment, use the four collars supplied with the
instrument.
1. Four collars are supplied for 1/2 inch (15mm) to 1- 1/
2inch (40mm), 2 inch of JIS 10K or ANSI class 150 or
JPI class 150, and 3 inch of ANSI class 150 or JPI class
150. Install the instrument as illustrated in Table 2.2.
2. If the adjacent flanges have eight bolt holes, insert the
stud bolts in the holes on the instrument shoulder. Refer to
Figure 2.9.
Stainless steel bolts and nuts are available on order. When
they are to be supplied by the user, refer to Table 2.2 for
bolt length. Gaskets must be supplied by the user.
3. Gasket:
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. Refer to Figure 2.10.
When using a spiral gasket (without bolt holes), confirm
the size with the gasket-manufacturer, as standard items
may not be used for certain flange ratings.
Table 2.2
T020601.EPS
Size
mm
(inch)
Flange Rating
Major Diameter of
External Threed of
Stud Bolt d (mm)
Length
R (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
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
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
Bolt
Collar
d
Length
R
F020601.EPS
Figure 2.9
F020602.EPS
Pipeline Flange
Pipeline
Figure 2.10