Manual

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Ellipse® Pitot Tube Meter

AR Annular Regular Meter

PTT-UM-00521-EN-02 (April 2014)

FLOW METERS

DEBITMETERS

MEDIDOR DE FLUJO

User Manual

Summary of content (8 pages)

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Ellipse® Pitot Tube Meter FLO W DEB MET E MED ITMETE RS R IDO RD S E FL UJO AR Annular Regular Meter PTT-UM-00521-EN-02 (April 2014) User Manual
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Ellipse® Pitot Tube Meter, AR Annular Regular Meter CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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User Manual INTRODUCTION The Preso 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.
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Ellipse® Pitot Tube Meter, AR Annular Regular Meter PIPE ORIENTATION AND SENSOR MOUNTING FLOW Field Weld Field Weld Air and Gas FLOW Liquid Figure 2: Horizontal pipe installation W OR OR F L O 5° Max. W F L O 5° Max. 5° Max. Field Weld F L O W F L O W Field Weld 5° Max. NNOTE: Illustration represents installation for downward flow.
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User Manual INSTALLATION INSTRUCTIONS, SINGLE SUPPORT 1. Choose the proper location to install the AR Ellipse using AGA/ASME standards (or equivalent). See "Preso Ellipse Location Instructions" on page 7. 2. Grind the surface of the pipe where the AR 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" weld gap recommended). Take care to protect the threads during the welding process. 4.
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Ellipse® Pitot Tube Meter, AR Annular Regular Meter 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 deburr, especially on the inside of the pipe. The hole used for the double support should be sized according to Table 3.
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User Manual 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.
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5 6 78 91 0 0 0 0 0 4 3 2 USGPM NOTE: 2" THRU 10" CURVES ARE FOR SCH. 40 PIPE 12" AND ABOVE ARE FOR SCH. STD. PIPE 2 2 C 1 .2 .3 1 .9 .8 .7 .6 .5 .4 3 2 4 3 4 6 5 10 9 8 7 5 6 7 8 91 0 20 ∆ P – IN HE S O 90 80 70 60 50 40 30 F H 2O ANNULAR ELLIPSE 100 3 4 5 6 78 9 1 0 0 2 2" 2.5" 3 4 3" 3.5" 4" 5 6 78 9 1 0 0 0 5" 6" 2 3 8" 4 10" 5 6 7 8 91 0 0 0 0 12" 16" 20" 14" 18" 24" 30" WATER 60° F FLOW CURVE Figure 9: Flow curve Control. Manage. Optimize.