Emerson Daniel 3818, Installation Manual

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The Daniel 3818 LNG Liquid Ultrasonic Flow Meter’s U.L. safety listing is accomplished
through the combination of a remote mounted, explosion-proof Transmitter Electronics
Enclosure that houses the CPU Module, I.S. Barrier Module, Power Supply Board, and the
Backplane Board. The flameproof Base Electronics Enclosure houses the Acquisition
Module and the acquisition board cable connections. 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
Daniel drawing DMC-004936, see
Appendix A ) and the meter body (spool piece).
1.7 Meter specifications
CAUTION
ESCAPING FLUIDS HAZARD
The purchaser of the meter is responsible for the selection of Daniel 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 Daniel Sales and Service representative to ensure you purchase the correct
components and seals for your application.
Specifications for Daniel 3818 LNG Liquid Ultrasonic Flow Meters are below:
Table 1-2: Meter specifications
Liquid meter specifications
Meter type Number of paths:
• Eight path (sixteen transducer) chordal
design
Ultrasonic type:
• Transit-time based measurement
• Spool piece with integral mount transducers
Meter performance
Linearity • ± 0.15% of measured value over a 10:1
turndown
• ± 0.20% of measured value over a 20:1
turndown
Repeatability • ±0.02% of reading in the specified velocity
range
Velocity range • 2.0 fps (0.6 m/s) to 40.0 fps (12.2 m/s)
(nominal) 48 fps (14.3 m/s) (over-range)
Upper Viscosity Limit • 150 centipoise (Transducers LT-07)
Introduction Installation manual
May 2019 3-9000-771
18 3818 LNG Liquid Ultrasonic Meter