Table 9-2: Conduit Plug Thread Sizes
Thread Identification mark
M20 x 1.5 M20
½ - 14 NPT ½ NPT
Table 9-3: 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
G1/2 G1/2
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.See certificate for Specific Conditions.
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. G½ thread forms are only acceptable for existing
(legacy) equipment installations.
Quick Start Guide February 2019
46 Rosemount 5300 Level Transmitter
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