Emerson Rosemount 3051D, Quick Start Manual, Page: 34 / 40

Standards IEC60079-0:2011, IEC60079-1:2007, IEC60079-7:2006-2007
Markings Ex de IIC Gb
ATEX Flameproof and Increased Safety
Certificate FM13ATEX0076X
Standards EN60079-0:2012, EN60079-1:2007, IEC60079-7:2007
Markings
II 2 G Ex de IIC Gb
Table 4-6: Conduit Plug Thread Sizes
Thread Identification mark
M20 x 1.5 M20
½
–14 NPT
½
NPT
Table 4-7: Thread Adapter Thread Sizes
Male thread Identification mark
M20 x 1.5–6g M20
½ –14 NPT ½ –14 NPT
¾ –14 NPT ¾ –14 NPT
Female thread Identification mark
M20 x 1.5–6H M20
½
–14 NPT
½
–14 NPT
G
½
G
½
Special Conditions for Safe Use (X):
1. When the thread adapter or blanking plug is used with an enclosure in
type of protection increased safety “e” the entry thread shall be
suitably sealed in order to maintain the ingress protection rating (IP) of
the enclosure.
2. The blanking plug shall not be used with an adapter.
3. Blanking Plug and Threaded Adapter shall be either NPT or Metric
thread forms. G ½ thread forms are only acceptable for existing
(legacy) equipment installations.
Quick Start Guide February 2019
34 Emerson.com/Rosemount