Table 9-8: Thread Adapter Thread Sizes (continued)
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 1/2 thread forms are only acceptable for existing
(legacy) equipment installations.
Quick Start Guide May 2019
32 Emerson.com/Rosemount
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