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Quick Start Guide
7
December 2014
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 over-tightening
the bolts. See Product Data Sheet 00813-0200-4840 for a list of all accessories and
their part numbers.
Figure 5. Flange mounting
A. Transmitter is mounted vertically (maximum deviation of 3°).
B. 6° beam half angle.
C. 1.3 in./ft. (11 cm/m). Minimum of 12 in. (0.3 m).
Mounting from a conduit
The 3107 and the 3108 can be mounted from a conduit using the optional adaptor
accessory. See Product Data Sheet 00813-0200-4840 for a list of all accessories and
their part numbers.
A
C
B