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Introduction
January 2023
Computer simulations of various velocity profiles demonstrate that multiple
measurement paths provide an optimum solution for measuring asymmetric
flow. The Rosemount 3814 Liquid Ultrasonic Flow Meter utilizes four cross-bore,
parallel-plane measurement paths, offers a high degree of repeatability, bi-
directional measurement and superior flow capabilities for custody transfer
without the compromises associated with conventional technologies.
The Rosemount 3814 Liquid Ultrasonic Flow Meter's U.L. safety listing is
accomplished through the combination of an explosion-proof Transmitter
Electronics Enclosure that houses the CPU Module, Power Supply board, I.S.
Barrier board, Backplane board and optional LCD Display board.
Important
The optional LCD Display requires firmware v1.04 or later and Uboot version,
January 31, 2013.
The Base Electronics Enclosure is intrinsically safe and houses the Acquisition
Module, the acquisition cable and wiring. The Intrinsically safe transducers and
cable assemblies are designed for Class 1, Division 1, Groups C and D areas
without need of further protection when installed in accordance with the field
wiring diagram (refer to Rosemount drawing DMC-004936, the Rosemount 3814
Liquid Ultrasonic Flow Meter's U.L. safety listing is accomplished through the
combination of an explosion-proof Transmitter Electronics Enclosure that houses
the CPU Module, the Base Electronics Enclosure that houses the Acquisition
Module with intrinsically safe transducers and cable assemblies designed for
Class 1, Division 1, Groups C and D areas without need of further protection when
installed in accordance with the field wiring diagram (refer to Rosemount drawing
DMC-004936, see
1.7
Meter specifications
CAUTION
FLUID CONTENTS MAY BE HAZARDOUS
The meter must be fully depressurized and drained before attempting to remove
the transducer housing. If fluid begins to leak from the transducer housing,
immediately reinstall it.
Failure to comply may cause serious injury or equipment damage.
CAUTION
ESCAPING FLUIDS HAZARD
The purchaser of the meter is responsible for the selection of Rosemount
components/seals and materials compatible with the chemical properties of the
measurement fluid.
Failure to select suitable meter components/seals may cause escaping fluids,
resulting in injury or equipment damage.
Consult your Emerson Flow service representative to ensure you purchase the
correct components and seals for your application.
12
Engineering
Drawings) and
Installation manual
00825-0100-3814
Safety
conditions.
Emerson.com/Rosemount
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