11
Reference Manual
00809-0100-4804, Rev CB
Installation
November 2016
Installation
Figure 2-6. Common Rosemount 3051S ERS Transmitter/Flange Assemblies
2.5.3 Process connections
The process connection size on a Rosemount 3051S ERS Transmitter flange is
1
/4–18-in NPT. Flange
adapters with a
1
/4–18 NPT to
1
/2–14 NPT connection are available with the D2 option. Use a
plant-approved lubricant or sealant when making the process connections. For other level flange type
connection options, reference the Rosemount 1199 Reference Manual
.
Install and tighten all four flange bolts before applying pressure to avoid leakage. When properly
installed, the flange bolts will protrude through the top of the sensor module isolator plate. See
Figure 2-7. Do not attempt to loosen or remove the flange bolts while the transmitter is in service.
Figure 2-7. Sensor Module Isolator Plate
A. Bolt
B. Sensor module isolator plate
C. Coplanar flange
D. Flange adapters
Transmitter with coplanar
flange
Transmitter with coplanar
flange and flange adapters
Transmitter with traditional flange
and flange adapters
A. 1.75 in. (44 mm) x 4
B. 1.75 in. (44 mm) x 2
C. 2.88 in. (73 mm) x 2
D. 1.5 in. (38 mm) x 2