Azbil MagneW FLEX+, User Manual

Page: 36 / 88

Installation Azbil Corporation
2-10 MagneW
FLEX+/PLUS+
Electromagnetic Flowmeter Detector
Gaskets
Gaskets are supplied with the grounding ring, except when it is made of SUS
material. If you are using SUS material, you must provide the gaskets. Azbil
Corporation recommends joint sheet or polytetraflouroethylene (PTFE) gasket
material. For the inner (bore) diameters of the gaskets, see the following table.
Rubber gaskets are not recommended.
CAUTION
Using a gasket with too small a diameter can affect the flow velocity distribution,
resulting in inaccurate measurement.
Using a gasket with too large a diameter can cause leakage. Also, any solid
substance in the fluid to be measured could accumulate between the gasket and the
flange, resulting in inaccurate measurement.
Table 2-2 Recommended inner diameters of gaskets
Nominal
detector
bore
diameter
mm 2.5 5 10 15 25 40 50 65 80 100 125 150 200
(inch)
0.1 0.2 3/8 1/2 1 1½ 2 2½ 3 4 5 6 8
Gasket
inner
diameter
mm
±
6
1
6
1
11
1
16
1
25
1
40
1
51
1
64
1
76
1
101
1
124
1
148
1
196
1
(inch)
±
0.24
0.04
0.24
0.04
0.43
0.04
0.63
0.04
0.98
0.04
1.57
0.04
2.01
0.04
2.52
0.04
2.99
0.04
3.98
0.04
4.88
0.04
5.83
0.04
7.72
0.04
If you install the detector at a lower torque level using rubber gaskets, you must use
gaskets with the bore and outer diameters for the respective pipe bore shown in the
following table. Depending on the grounding ring material, two gaskets of different
thicknesses may be required. The following two tables provide the inner and outer
diameters for the two different gasket thicknesses.