Azbil MagneW Two-wire PLUS+ MTG15A, User Manual

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2-31
2. Use this method to install the detector using a protective plate to prevent PVC pipe from
being deformed or damaged when the bolts are tightened to the specified torque.
Install the protective plate between the outer side of the PVC flange and the detector,
as shown in Fig. 2-27. The protective plate protects the PVC pipe from deformation or
damage when secured at the specified torque. The torque level is unrelated to the pipe or
grounding ring material. See Table. 2-5 on page 2-24 for the appropriate torque. For the
internal diameters of the gaskets, see Table. 2-6 on page 2-26.
Lining
Grounding
ring
Gasket
Protective plate
Fig. 2-27. Detector installation using SUS material grounding ring (with protective plate)
3. Use this method to install the detector using a low-fastening torque and rubber gaskets.
Remove the grounding ring from the detector, insert a rubber gasket 0.5 to 1.0 mm thick
between the lining and the grounding ring, then reinsert the grounding ring. Then remove
the PTFE gasket, and attach a gasket 3 to 4 mm thick instead. Under these conditions,
attach the detector to the pipe as shown in Fig. 2-28. Fasten the bolts to a torque that
provides a leakproof joint
Lining
Rubber gasket
(0.5 - 1 mm)
Grounding ring
Rubber gasket
Fig. 2-28. Detector installation using SUS material grounding ring (with rubber gasket)