Ametek Thermox 2000 ATEX Series, Руководство пользователя

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3-26 | Thermox Series 2000 WDG-HPII / HPIIC - ATEX
EMC grounding, shielding, and noise protection
You must use twisted-pair cable in rigid metal conduit or use twisted pair
cable with an overall braided shield. All cable shields or conduits connect-
ing to the control unit must be chassis grounded.
Under no circumstances should you leave cable shields disconnected
at one end or both ends of the cable (sensor or control unit or other
device).
EMC grounding method
Shield Ring Method
Connect all shields for that conduit entry (other than power) to a supplied
shield terminal ring (see Figure 3-15). This shield ring is a stainless steel
ring with a metal tab. Place the shield ring under the conduit nut. Crimp
the shields from all cables for that conduit entry to a 1/4" female quick
disconnect, then push it onto the tab that sticks out of the conduit shield
ring. Keep shields as short as possible.
Ground Stud Method
Connect all cable shields for that conduit entry to the grounding stud
closest to that conduit entry hole.
!
CAUTION
Figure 3-15.
Direct shield
grounding methods.
SHIELD RING METHOD
GROUND STUD METHOD