Emerson 3-9000-771A Manuel D’Utilisation
8
Meter specifications
Section 1: Introduction
Daniel 3818 LNG Liquid Ultrasonic Meter Installation Manual
May 2012
3-9000-771 Rev A
1.6
Meter specifications
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)
Body and Flange Pressure
rating range
rating range
U.S. Customary Units - Meter size 30 (Raised face, RTJ or Companion)
•
Line sizes:
—
30” (DN 900)
•
ANSI pressure classes (per ANSI B16.5):
—
300 ANSI / PN 50
•
Body and flange material and temperature rating:
—
316 Stainless steel (forged) body and flanges: (-196° C to 60° C)
•
Maximum Pressures
—
Dependent on operating temperature
•
Minimum Pressures
—
0 psig 0 barg
Flange types
•
Raised face for:
•
ANSI class - 300
Specific Gravity
•
0.35 to 1.50
Accuracy Limits
•
Accuracy limits typically are:
—
± 2% without a flow calibration