Emerson Rosemount 3051 Manual page 46

Hardware installation
March 2023
Electronics housing clearance
Mount the transmitter so the terminal side is accessible.
To remove the cover, ensure there is clearance of 0.75 in. (19 mm). Use a conduit plug in
the unused conduit opening. You need three inches of clearance to remove the cover if a
meter is installed.
Environmental seal for housing
For NEMA
male threads of conduit to provide a water and dust tight seal.
Always ensure a proper seal by installing the electronics housing cover(s) so that metal
contacts metal. Use Rosemount O-rings.
Flange bolts
Emerson can ship the Rosemount 3051 with a coplanar flange or a traditional flange
installed with four 1.75-in. flange bolts.
See Table 3-1
and traditional flanges. Emerson supplies stainless steel bolts coated with a lubricant to
ease installation. Carbon steel bolts do not require lubrication. Do not apply additional
lubrication when installing either type of bolt. Bolts supplied by Emerson are identified by
their head markings.
Bolt installation
WARNING
Spare parts
Replacement equipment or spare parts not approved by Emerson for use as spare parts
could reduce the pressure retaining capabilities of the transmitter and may render the
instrument dangerous.
Use only bolts supplied or sold by Emerson as spare parts.
Table 3-1: Bolt installation torque values
Bolt material
CS-(ASTM-A445) standard
Austemitic 316 stainless steel
(SST)—Option L4
ASTM A193 Grade B7M—Option
L5
46
4X, IP66, and IP68 requirements, use thread sealing (PTFE) tape or paste on
®
and Figure 3-3 for mounting bolts and bolting configurations for the coplanar
Initial torque value
300 in-lb (34 N-m)
150 in-lb (17 N-m)
300 in-lb (34 N-m)
Manual
00809-0100-4007
Final torque value
650 in-lb (73 N-m)
300 in-lb (34 N-m)
650 in-lb (73 N-m)
Rosemount 3051