accelabar brochure-yoko 1-07.pdf

7/27/2019 accelabar brochure-yoko 1-07.pdf

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No Straight Run RequiredThe Acce la ba r c a n be us ed in extreme ly limited s traight

run piping co nfigura tions. The s traight run is integral to

the me ter. The s ta biliza tion a nd linea riza tion o f the veloc ity

profile within the throat of

the nozzle eliminates the

need for any upstream run.

EngineeringSpecifications Low velocity flow rates

High acc urac y:

to 0.50%

Repeata bility: 0.050%

Verified flow co efficients

No ca libration req uired

Extended turndown

No s traight run

requirements

Low permanent

pres sure los s

Mas s o r volumetric flow

Actual Application (see d ata on page 4)Application: 3 S ch 40 Natural Ga s

Operating Pressure/Temperature: 50 P S IG /70 F

Max/Min Flow Rate: 60,000 S C FH/1,000 S CFH

Flow Turndown: 60:1

Straight Run: 0

How the Accelabar WorksThe Acc elaba r cons ists of a uniq ue toroida l nozzle des ign

and a Verab ar ave ra ging pitot. The nozzle has a pa tented

straight run settling distance that accelerates, linearizes

a nd s tab ilizes the velocity profile s ense d by the Verab ar.

The Verab ar loca ted within the noz zle ac curately mea sures

a nd significa ntly increas es the d ifferentia l pres sure output

to increa se the ope rating ra nge (turndow n). The Acc elaba r

has a constant flow coefficient and produces an accuracy

of up to 0.50%.

Other manufac turers claim high accurac y, but over

a l imited turndow n.

The Unique Accelabar Flow Meter

The Accelabar is a new and unique flow meter that com bines two d ifferential pressure

techno logies to prod uce op erating ranges never before attainable in a single flow m eter.

It is capab le of generating high d ifferential pressures for

measuring gas, liquids and steam at turnd owns previously

unattainablewith no straight run requirements.

Stabilizing &linearization section

Toro ida linlet

Accelabarnozzle

RTD(optio

Verab ar

Diffusercone

FLOW

US Pa tent No. 6,868,741B2 a nd various foreign pa tents pending.


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Verabar Provides the Accuracy

The proven tec hnolog y of the Verab a r ma kes

the Accelabar work. It accurately measures the

flow ra te w ithin the noz zle. Its uniq ue b ullet s hape ,

constant flow coefficient, solid one-piece construction,

non-clog design and signal stability make it the

only design capable of producing the overall

performance.

Verified Accuracy andFlow Coefficients

Empirical test data from independentlab oratories verified a n a nalytica l mode

and flow coefficients as constant and

independent of Reynolds Number

and within 0.75% of the predicted

value over a flow turndow n of 65:1

(se e a ctua l tes t). This eliminat es

the need f or cal ibrat ion.

0.500

0.490

0.480

0.470

0.460

0.450

0.440

0.430

0.420

0.410

0.400

Published Flow Coefficient: 0.4568Reynolds Number Range: 6,517 to 438,160Flow Turndown: 65 to 1DP Turndown: 2,293 to 1 (0.111 H2O to 255.51 H2O)

FlowC

oefficient

(K)

Flow TestAccelabar Flow Meter

Flow Coefficient vs. Reynolds NumberDate 8-21-02

Accuracy0.75%Flow Turndown 65:1

0 50 100 150 200 250 300 350 400 450

Reynolds Number 1,000


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Comparative Analysis vs. Other Flow MetersThe Acce la ba r fills the ne ed not pres ently be ing filled

by other flow meters for applications that:

Do not have sufficient velocity to produce a read ab le

signa l or sufficient turndo wn Req uire the highes t ac curac y over an extended range

Have little or no s traight run piping b efore the meter

The Acc elaba r performa nce

cha rac teristics far exceed

those of other DP meters,

vortex meters and many

other flow meters.

These c harts show the actual

performance characteristics

of the Accelabar versus other

flow meters b as ed on the

follow ing flow co nditions :

Accelabar Increased VelocityFluid Velocity Pipe Line vs. Accelabar Throat

Flow TurndownAccelabar vs. Vortex

Flow TurndownMaximum & Minimum

Minimum Straight Run Requirements

Permanent Pressure Loss

DP at Maximum FlowInches H2O 3 Natural Gas 60,000 SCFH

Fluid Natural Gas

P ipe S ize 3 S ch 40

Ma x Flow 60,000 S CFH

S G 0.6

P res sure 50 ps ig

Tempera ture 70 F

P ip e Line Ve lo c ity 74 ft/s ec

Flow Conditions


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Accelabar Model Selection1. Furnish your flowing co nditions. A flowca lculation is req uired to d etermine the

DP a nd ve rifica tion o f the op erating limits.

Each meter size has a s tandard beta rat io

sized for the optimal operating range.

The ma ximum ope rating limits a re de ter-

mined by the Accelabar flow calculation.

2. If your flow ing c onditions e xcee d the operating limits, a larger or sm aller mod el (meter size) must be s elected.

Ready to InstallThe Acc elaba r is a co mplete flow meter

rea dy to insta ll. It comes co mplete with

single or dual transmitters depending on the

turndow n req uirements .

An op tiona l RTD is s upplied in a Thermo w ell

for dynamic c ompens a tion (req uired for use

w ith multiva ria ble trans mitter).

Specifications

Chart A

Meter SizeVerabar Face to Face L*Sensor 150# 300# 600#

3 (75mm) -05 1/2 13.78 14.53 15.28

4 (100mm) -05 1/2 15.15 15.90 17.65

6 (150mm) -10 1 19.15 19.90 21.90

8 (200mm) -10 1 21.40 22.15 24.40

10 (250mm) -10 1 23.15 24.40 27.65

12 (300mm) -10 1 26.17 27.78 29.67

AF FlangedModel

Single Transmitter

Dual Transmitter

Flowing Conditions

*Density is not required for steam applications.

General Data Fluid Parameters Ma ximum Norma l Minimum Units

Ta g number Flow Ra te

P ipe s ize &sc hedule or Pressure

exa ct ID &wa ll thicknessTem pe rature

Fluid na me: Dens ity*

Accuracy Repeatability Sensor, Body & Flange

to 0.50% 0.050% 316S S

Acce lab ar flow nozz le

Graphitepacking

Pa cking follower

Weld ne ckRF flange

Verab ar

Trans mitter

RTD(optional)Retaining

plate

Manifoldhead

L

* Face to fac e dimensions nominal. Custo m lengths a vailable.


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Installation Orientation

Direct Mount Remote Mount

Trans mitter

Trans mitter

Verab ar

Gas

Mount totop of pipe

Steam& Liquid

Mountto

bottomof pipe

Gas

Mount to top of pipe

Steam & Liquid

Mount to bottom of pipe

Instrument tubing&fittings not included

Instrument tubing&fittings not included

Trans mitter

Trans mitter

Verab ar

Manifold

Manifold

Fill tee(steam only)

Instrumentvalves

Verab ar

Manifoldhead

Verab ar

Manifoldhead

6315 Monarch Park PlaceNiwot, CO 80503 USA Phone: 303-652-8550Fax: 303-652-8552 VB-7100F (6/08)

E-Mail: cont [email protected] Website: www.veris-inc.c om Printed in USA

True Perform ance in Flow M easurement

ISO 9001 Cert ified

160 Steam

160 Steam

Gas 160

Gas 160

Dual Transmitter

Transmitter Selection

Accelabar accuracy is percentof rate. The Acc elab a r maintains

a constant flow coefficient over

a w ide range o f flow rates and

differential press ures .

DP transmitter accuracy is

percent of scale. While mos t

Acc elaba r insta lla tions a re eq uipped

with one DP tra nsmitter, s ome ap plica tions req uiring superior ac curac y

over an extreme DP turndown may require a dual DP transmitter

installation.

Single Transmitter

accelabar brochure-yoko 1-07.pdf

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