Meter Specifications - Emerson Daniel 3812 Installation Manual

Introduction
January 2019
superior low-flow capabilities without the compromises associated with conventional
technologies.
The Daniel 3812 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.
Note
The optional LCD Display requires firmware v1.04 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 Daniel drawing
DMC-004936, see
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.
Table 1-2: Meter specifications
Liquid Ultrasonic Flow Meter specifications
Meter type
Enclosure materials
Ultrasonic type
Meter Performance
Linearity
Repeatability
20
Engineering Drawings and Safety conditions).
Number of paths
• Two path (four transducer) chordal design
• ASTM B26 Gr A356.0 T6 Aluminum
— Chromate conversion coated with a
polyurethane enamel
• ASTM A351 Gr CF8M Stainless Steel
— Passivated
• Transit-time based measurement
• Spool piece with integral mount transducers
• ± 0.30% of measured value over a 10:1
turndown (40 to 4 ft/s; 12.2 to 1.2 m/s)
• ±0.10% of reading in the specified velocity
range
3812 Liquid Ultrasonic Flow Meter
Installation manual
3-9000-765