ABB MAG-XE - Flowmeter Primary Installation

5
Electromagnetic Flowmeter
COPA-XE / MAG-XE
2.2.1 Flowmeter Primary Installation
The electromagnetic flowmeter can be installed at any arbitrary
location in the pipeline as long as the installation requirements
(see 2.2) are satisfied.
When selecting the installation site, consideration should be
given to assure that moisture cannot enter into the electrical
connection or converter areas. Make certain to carefully seat
the gaskets and secure the covers after installation and start-up
have been completed.
Note:
Graphite should not be used to lubricate the flange
or process connection gaskets because under certain
circumstances an electrically conductive coating may
form on the inside surface of the meter tube affecting
operation. Vacuum shocks in the pipeline should be
avoided to prevent damage to the liner (PTFE Liners).
Gasket Surfaces on the Mating Flanges
In every installation parallel mating flange surfaces should be
provided and gaskets made from materials suitable for the fluid
and the temperature should be installed. Only then can leaks be
avoided. The flange gaskets for the flowmeter primary must be
installed concentrically to achieve optimum measurement re-
sults.
Protection Plates
The protection plates are installed to prevent damage to the
flowmeter primary liner during transport. Remove the protection
plates only when ready to install the meter in the pipeline. Be
careful not to cut or otherwise damage the liner in order to
prevent leakage.
Torque Specifications for Flanges
The mounting bolts are to be tightened equally in the usual
manner without excessive one-sided tightening. We recom-
mend that the bolts be greased prior to tightening and that they
be tightened in a criss-cross pattern as shown in Fig. 10.
Tighten the bolts during the first pass to approx. 50 %, during
the second pass to approx. 80 % and only during the third pass
to 100 % of the max. torque value. The max. torque values
should not be exceeded, see the following tables.
Torque Specifications for Flanged Meters
Torque Specifications for Wafer Design Flowmeters
Fig. 10
Liner Meter Size
inch DN
Process
Connection
Bolts Torque
max. Nm
PN
bar
PTFE/
Hard rubber
(≥ 1/2”
[DN 15])
ETFE
(≥ 1”
[DN 25])
1/8-1/4 3-10
1/2 15
3/4 20
125
1-1/4 32
1-1/2 40
250
2-1/2 65
380
Flanged 4 x M12
4 x M12
4 x M12
4 x M12
4 x M16
4 x M16
4 x M16
8 x M16
8 x M16
8
10
16
21
34
43
56
39
49
40
40
40
40
40
40
40
40
40
PFA
≤ 10"
[DN 250]
PTFE/
Hard rubber
ETFE
≤ 12”
[DN 300]
4 100
5 125
6 150
8 200
10 250
12 300
14 350
16 400
Flanged,
Wafer
Design
(≤ 4”
[DN 100])
8 x M16
8 x M16
8 x M20
12 x M20
12 x M24
12 x M24
16 x M24
16 x M27
47
62
83
81
120
160
185
250
16
16
16
16
16
16
16
16
PTFE
≤ 32”
[DN 800]
Hard rubber
20 500
24 600
28 700
32 800
36 900
40 1000
Flanged 20 x M24
20 x M27
24 x M27
24 x M30
28 x M30
28 x M33
200
260
300
390
385
480
10
10
10
10
10
10
Table 1
Liner Meter Size
inch mm
Process
Connection
Bolts Torque
max. Nm
PN
bar
PFA 1/8-1/4 3 - 6 Threaded
flanges
Wafer Design
4 x M12 2.3 40
PFA/
PTFE
3/8 10
1/2 15
3/4 20
125
Threaded
flanges
Wafer Design
4 x M12
4 x M12
4 x M12
4 x M12
7.0
7.0
11.0
15.0
40
40
40
40
1-1/4 32
1-1/2 40
250
4 x M16
4 x M16
4 x M16
26.0
33.0
46.0
40
40
40
2-1/2 65
380
4 100
8 x M16
8 x M16
8 x M20
30.0
40.0
67.0
40
40
40
Table 2