Ellipse® Pitot Tube Meter AHR Annular Low Pressure Wet Tap Meter PTT-UM-00375-EN-03 (June 2014) User Manual
Ellipse® Pitot Tube Meter, AHR Annular Low Pressure Wet Tap Meter CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
User Manual INTRODUCTION 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.
Ellipse® Pitot Tube Meter, AHR Annular Low Pressure Wet Tap Meter PIPE ORIENTATION AND SENSOR MOUNTING Figure 2: Orientation and mounting INSTALLATION INSTRUCTIONS, SINGLE SUPPORT 1. Choose the proper location to install the AHR Ellipse using AGA/ASME standards (or equivalent). See “Location Instructions” on page 6. 2. Grind the surface of the pipe where the AHR Ellipse is to be inserted to provide a clean area for welding. 3.
User Manual THE ELLIPSE AHR MUST BE MANUALLY HELD IN ITS FULLY INSERTED POSITION UNTIL THE COMPRESSION NUT HAS BEEN COMPLETELY TIGHTENED IN STEP 11 AND THE SAFETY CHAIN HAS BEEN PROPERLY ATTACHED. 11. While holding the Ellipse AHR in its fully inserted position, align the arrow on the sensor head with the flow direction. Figure 3: Sensor alignment 12. Completely tighten the packing gland to prevent leakage. 13.
Ellipse® Pitot Tube Meter, AHR Annular Low Pressure Wet Tap Meter 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.
1 .2 2 3 4 5 6 7 8 91 0 6 5 10 9 8 7 20 30 2 90 80 70 60 50 40 100 3 NOTE: 2" THRU 10" CURVES ARE FOR SCH. 40 PIPE 12" AND ABOVE ARE FOR SCH. STD. PIPE .3 ∆ 1 .9 .8 .7 .6 .5 .4 2 3 4 S CH E P – IN 2 OF H April 2014 O ANNULAR ELLIPSE 4 5 6 78 9 1 0 0 3 4 5" 5 6 78 9 1 0 0 0 3" 3.5" 4" USGPM 2 2" 2.
Control. Manage. Optimize. PRESO and ELLIPSE are registered trademarks 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 specifications without notice, except to the extent an outstanding contractual obligation exists. © 2014 Badger Meter, Inc. All rights reserved. www.badgermeter.
