transmitter over the liquid surface. The bracket is designed to fit over the
threaded neck of the transmitter and is retained by a locknut.
Use a chain or wire through the hole provided in the bracket, which is shaped
to ensure that the transmitter will hang perpendicular to the water surface.
Never suspend the transmitter by the cable. Check that the material of the
chain or wire is corrosion resistant to the liquids and any vapors present.
The bracket may be bolted to a suitable crossmember above the liquid
surface. Ensure the transmitter is perpendicular to the surface to maximize
the return echo size.
Figure 4-1: Mounting Thread and Supplied Bracket
A. 1-in. threaded process connection
Note
To help with alignment, the echo size (signal strength) can be indicated on
the Rosemount 3490 Series Control Unit or a Field Communicator.
Flange mounting
The instrument (accessory) flanges supplied by Emerson are manufactured
from PVC and are a full face design. Care must be taken when installing to a
raised face mating flange on the tank or vessel to prevent distortion of the
PVC flange by overtightening the bolts. See
for a list of
all accessories and their part numbers.
Quick Start Guide
August 2019
12
Rosemount Ultrasonic 3107 Level and 3108 Flow Transmitters
