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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
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