User Manual

8 3814 liquid ultrasonic meter design
Section 1: Introduction Daniel 3814 Liquid Ultrasonic Meter Installation Manual
March 2015 3-9000-760 Rev E
1.5 3814 liquid ultrasonic meter design
The Daniel 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.
Computer simulations of various velocity profiles demonstrate that multiple measurement
paths provide an optimum solution for measuring asymmetric flow. The Daniel 3814 Liquid
Ultrasonic Flow Meter utilizes four cross-bore, parallel-plane measurement paths, offers a high
degree of repeatability, bi-directional measurement and superior low-flow capabilities without
the compromises associated with conventional technologies.
Figure 1-2 Daniel 3814 Liquid Ultrasonic Flow Meter Design
A.
B.
C.
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)