Azbil MagneW FLEX+, User Manual

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Azbil Corporation Installation
MagneW
FLEX+/PLUS+
Electromagnetic Flowmeter Detector 2-39
2.5.7: Installation on a PVC pipe using non-SUS
grounding ring material
The installation methods described in this section are for installation on a PVC pipe
using non-SUS grounding ring material. For the installation method corresponding to
any other combination of materials, refer to Table 2-5 on page 2-12.
PTFE gaskets are provided for this type of installation. If you supply the gaskets,
Azbil Corporation recommends non-rubber gaskets such as joint sheet or PTFE.
When using rubber gaskets, gaskets of the same material with two different
thicknesses (0.5 to 1.0 mm (0.02 to 0.04 inch) and 3.0 to 4.0 mm (0.12 to 0.16
inch)) are required. See Table 2-3 on page 2-11 and Table 2-4 on page 2-11 for the
appropriate dimensions. See page 2-42 for installation using rubber gaskets.
CAUTION
The use of rubber gaskets and a lower fastening torque is not recommended and
can cause insufficient surface pressure between the lining and the grounding ring,
resulting in leakage.
If tightening the bolts at the specified torque threatens to warp or damage the PVC
pipes, you will need to use a protective plate. See page 2-41 for installation of the
protective plate.