Badger Meter BAR User Manual

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Ellipse® Pitot Tube Meter

BAR Annular Commercial Meter

PTT-UM-00324-EN-02 (April 2014)

User Manual

Ellipse® Pitot Tube Meter, BAR Annular Commercial Meter

CONTENTS

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Pipe Orientation and Sensor Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Installation Instructions, Single Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Installation Instructions, Double Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Preso Ellipse Location Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Flow Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Page ii April 2014

INTRODUCTION

Impact velocity

The Preso patented elliptical design outperforms and provides greater accuracy than traditional differential pressure flow measurement devices. This differential pressure flow meter is designed with a series of ports facing the upstream velocity pressures, as well as flow sensing ports strategically located ahead of the trailing edge flow separation.

The multi-ported, self-averaging flow element consists of an elliptical shape with two independent flow sensing chambers. The impact velocity sensing holes (high pressure) are located along the leading edge and the true static sensing holes (low pressure) are on the exterior probe side. The BAR Ellipse comes with instrument shutoff valves with provisions to accept a transmitter or direct indicating meter.

SPECIFICATIONS

Applications Liquids and gases

Pipe Sizes 2…24 in. (50…610 mm)

Pressure 400 psi (2760 kPa) maximum

Temperature 250° F (120° C) maximum

Accuracy ±0.75% of reading

Turndown Ratio 17:1 with no vacuum effect

Y-type head, brass 1/8 in. FNPT connection

Sensor connection:

2…5 in., Ellipse 1/2 in.; 1/2 in. brass compression fitting with SS ferrule

6…12 in., Ellipse 7/8 in.; 1 in. CS compression fitting with SS ferrule

Standard Components

Reynolds Number

Resonance If greater than 0.8, use double support

14…24 in., Ellipse 1-1/4 in.; 1-1/4 in. brass compression fitting with SS ferrule

CS 3000 lb thread fitting, ASTM A105

316/316L SS Ellipse sensor

Instrument valves (2 per sensor), 1/4 in. SAE flare brass ball type

Polycarbonate ID tag with wire

Greater than 75,000 maintains most accurate flow measurements

Less than 75,000 consult factory for estimated results

User Manual

sensing holes

True static

sensing holes

Figure 1: BAR Ellipse pressure sensing holes

Table 1: Specifications

Page 3 April 2014

Ellipse® Pitot Tube Meter, BAR Annular Commercial Meter

FLOW

Sensor Alignment

5° Max.

PIPE ORIENTATION AND SENSOR MOUNTING

FLOW METERS DEBITMETERS MEDIDOR DE FLUJO

FLOW

Air and Gases

Field Weld

FLOW METERS DEBITMETERS MEDIDOR DE FLUJO

10° 10°

Figure 2: Horizontal pipe installation

Field Weld

FLOW

10° 10°

FLOW METERS DEBITMETERS MEDIDOR DE FLUJO

Liquid

FLOW METERS DEBITMETERS MEDIDOR DE FLUJO

5° Max.

F L

FLOW METERS

DEBITMETERS

MEDIDOR DE FLUJO

OTE:N The preferred flow direction for air and gas is downward. The preferred flow direction for liquid is upward. Figure 3

represents installation for downward flows.

Figure 3: Vertical pipe installation

Page 4 April 2014

User Manual

Body

compression tting

INSTALLATION INSTRUCTIONS, SINGLE SUPPORT

1. Choose the proper location to install the BAR Ellipse using AGA/ASME standards (or equivalent). See Figure 2 and Figure 3.

2. Grind the surface of the pipe where the BAR Ellipse is to be inserted to provide a clean area for welding.

3. Weld the supplied thread-o-let to the pipe using standard codes for your application (1/16 in. weld gap recommended). Take care to protect the threads during the welding process.

4. Drill a hole through the pipe wall according to Table 2.

Pipe Size Model/Sensor Weld Connector Drill Bit

2…5 in. BAR (1/2 in.) 1/2 in. 5/8 in.

6…12 in. BAR (7/8 in.) 1 in. 1-1/8 in.

14…24 in. BAR (1-1/4 in.) 1-1/4 in. 1-3/8 in.

Table 2: Single support drill bit size

5. De-burr the hole just drilled, especially on the inside of the pipe.

6. Assemble the supplied compression tting as shown in Figure 4. Thread the assembled compression tting into the thread-o-let manually. With a wrench, tighten the body of the tting another 1-1/4 turns, being careful not to tighten the

compression nut.

Nut

Insert

Thread nut loosely

onto body of the

Install insert

as shown

Install threaded

portion into weld

tting on pipe

Figure 4: Single support installation

Field Weld

FLOW METERS

DEBITMETERS

MEDIDOR DE FL UJO

FLOW

7. Install the instrument valves (optional) at the BAR Ellipse head connections. Make sure that the valves are fully closed to prevent them from leaking during start-up.

8. Insert the BAR Ellipse through the compression tting. Carefully push the sensor into the pipe until it reaches the opposite wall.

9. While holding the BAR Ellipse in its fully inserted position, align the arrow on the sensor head with the direction of ow. See Figure 4.

10. Manually tighten the compression nut in order to prevent leakage, then use a wrench to tighten the compression nut another 1-1/4 turns.

Page 5 April 2014

Ellipse® Pitot Tube Meter, BAR Annular Commercial Meter

Flush with

2…5 in. Models

Double Support Pin

6…24 in. Models

INSTALLATION INSTRUCTIONS, DOUBLE SUPPORT

1. Follow steps 1 through 7 in “Installation Instructions, Single Support” on page 5. At 180° from, and on the same plane as, the previously drilled hole, grind the surface of the pipe to provide a clean area for welding. Drill a hole and de-burr, especially on the inside of the pipe. The hole used for the double support should be sized according to Table 3.

Pipe Size Model/Sensor Weld Connector Drill Bit

2…5 in. BAR (7/16 in.) 1/2 in. 3/8 in.

6…12 in. BAR (7/8 in.) 1/2 in. 1/2 in.

14…24 in. BAR (1-1/4 in.) 1 in. 7/8 in.

Table 3: Double support drill bit size

2. Weld the double support thread-o-let, making sure that it is centered with the drilled hole (1-1/16 weld gap recommended).

3. Install the BAR Ellipse sensor through the two holes. Make sure that the double support pin passes through the guide ring. See Figure 5.

Ellipse Sensor

pipe O.D.

Guide Ring

Figure 5: Double support installation

4. Align the arrow on the sensor head in the direction of ow as in step 9 in “Installation Instructions, Single Support” on

page 5.

5. Make sure the BAR Ellipse is in the correct orientation and spans the inside of the pipe. Manually tighten the compression nut, then use a wrench to tighten it another 1-1/4 turns.

6. Install the plug into the end of the double support thread-o-let. Tighten the plug to prevent leakage.

Page 6 April 2014

User Manual

PRESO ELLIPSE LOCATION INSTRUCTIONS

Straight pipe requirements: Accuracy is affected by the piping configurations due to the disturbances of the flow profile. A fully developed symmetrical flow profile is achieved with the minimum upstream and downstream recommended lengths.

DISTANCES ARE EXPRESSED IN

NUMBER OF NOMINAL PIPE DIAMETERS

THROTTLED VALVE OR REGULATOR

FLOW

Regulator or

Partially Closed

Valve

FLOW

Straightening

Vane

CHANGE IN PIPE SIZE

Preso

FLOW METERS DEBITMETERS MEDIDOR DE FLUJO

FLOW

4 6

Preso

FLOW METERS DEBITMETERS MEDIDOR DE FLUJO

FLOW

TWO ELBOWS IN DIFFERENT PLANES

Preso

FLOW METERS DEBITMETERS MEDIDOR DE FLUJO

Preso

FLOW METERS DEBITMETERS MEDIDOR DE FLUJO

FLOW

Straightening Vane

424

Preso

FLOW METERS DEBITMETERS MEDIDOR DE FLUJO

Preso

FLOW METERS DEBITMETERS MEDIDOR DE FLUJO

TWO ELBOWS IN THE SAME PLANE

Preso

FLOW METERS DEBITMETERS MEDIDOR DE FLUJO

Preso

FLOW METERS DEBITMETERS MEDIDOR DE FLUJO

FLOW

311

Preso

FLOW METERS DEBITMETERS MEDIDOR DE FLUJO

Preso

FLOW METERS DEBITMETERS MEDIDOR DE FLUJO

FLOW

Straightening Vane

FLOW

Straightening Vane

A SINGLE ELBOW

Straightening Vane

Figure 6: Straight pipe requirements

FLOW

Straightening Vane

3 Preso

FLOW METERS

DEBITMETERS MEDIDOR DE FLUJO

Preso

FLOW METERS DEBITMETERS MEDIDOR DE FLUJO

Page 7 April 2014

FLOW CURVE

INCHES OF H

ANNULAR ELLIPS

10 in. CURVES ARE FOR SCHEDULE 40 PIPE

12 in. AND ABOVE ARE FOR SCHEDULE STANDARD PIPE

100000

12" 16" 20"

2" 2.5" 3.5"3" 4" 5" 6" 8" 10" 14" 18" 24" 30"

WATER 60 °F

2 3 4 5 6 7 8 9

10000

2 3 4 5 6 7 8 9

1000

2 3 4 5 6 7 8 9

USGPM

100

Control. Manage. Optimize.

PRESO is a registered trademark of Badger Meter, Inc. Other trademarks appearing in this document are the property of their respective entities. Due to continuous research, product improvements and enhancements, Badger Meter reserves the right to change product or system specications without notice, except to the extent an outstanding contractual obligation exists. © 2014 Badger Meter, Inc. All rights reserved.

Figure 7: Flow curve

∆P –

2 3 4 5 6 7 8 9

NOTE:

2…

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