Section 1: Introduction

Daniel 3818 LNG Liquid Ultrasonic Meter Installation Manual

May 2012

3-9000-771 Rev A

 

 

1.6Meter specifications

Specifications for Daniel 3818 LNG Liquid Ultrasonic Flow Meters are below:

Table 1-2 Meter specificationsLiquid 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

U.S. Customary Units - Meter size 30 (Raised face, RTJ or Companion)

rating range

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

 

 

 

 

8

Meter specifications