Emerson Rosemount 385, Reference Manual, Page: 12 / 34

6 Installation
Installation Reference Manual
February 2019 00809-0100-3385
4. When the sensor assembly is properly secured by the ball valve assembly, the valve may
be opened and the sensor positioned into the process at the desired depth and
orientation.
5. Tighten the hex nut of the male connector to tightly secure the sensor in place during
process conditions. When tightened, the Teflon ferrule inside the hex nut clamps the
sensor tube. (See Figure 4-3).
The sensor must be captured by the valve assembly and the male connector so that it cannot be blown free
by process pressure if mishandled during insertion or retraction.
CAUTION
Over tightening the hex nut may damage the ferrule.
CAUTION
A stainless steel ferrule is available if the TEFLON ferrule does not inadequately grip. When using the metallic
ferrule, care must be taken to avoid over tightening and damaging the sensor tube. If the male connector
leaks during insertion or retraction, replace the O-ring in the male connector.
NOTICE
Figure 2-1: Typical Mounting Details