Figure 1-2: Rosemount 3814 Liquid Ultrasonic Flow Meter Design
A. Transmitter electronics enclosure (explosion-proof) Optional - Local Display
with glass endcap (Figure 1-3)
B. Base electronics enclosure (intrinsically safe)
C. Meter body with transducer assemblies (LT-031, LT-03, LT-04, LT-05, LT-08, or
LT-09) (intrinsically safe)
Figure 1-3: Transmitter electronics enclosure with optional local display and
glass endcap
The Rosemount 3814 Liquid Ultrasonic Flow Meter is a four-path (eight
transducers) in-line meter designed to measure the difference in signal transit
time with and against the flow across one or more measurement path(s). A signal
transmitted in the flow direction travels faster than one transmitted against the
flow direction. Each measurement path is defined by a transducer pair in which
each transducer alternately acts as transmitter and receiver. The meter uses
transit time measurements and transducer location information to calculate the
mean velocity.
Installation manual Introduction
00825-0100-3814 January 2023
Rosemount 3814 Liquid Ultrasonic Flow Meter 11
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