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Summary of Contents for COX Exact Dual Rotor
- Page 1 Turbine Flow Meters Exact Dual Rotor User Manual TRB-UM-00478-EN-01 (September 2018)
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Page 2: Table Of Contents
Turbine Flow Meters, Exact Dual Rotor CONTENTS Scope of This Manual Unpacking and Inspection Safety Considerations Terminology and Symbols Description Traditional Operating Principle Dual Rotor Advantages Performance Materials Construction Installation Placement Filtration Notes on the Swirl Effect Valves and Piping... -
Page 3: Scope Of This Manual
Scope of This Manual SCOPE OF THIS MANUAL This manual is intended as an installation and operation guide for the Cox Exact Dual Rotor turbine flow meter Please consult the factory or our website for any questions or concerns regarding any of the equipment or installation The electronic version of this manual is available on our website at www.badgermeter.com... -
Page 4: Description
Description DESCRIPTION The Exact Dual Rotor turbine flow meter uses a unique rotor design that reduces swirl effects These flow meters are designed and manufactured to the highest quality standards to provide the best possible performance for flow measurement requirements... -
Page 5: Construction
Bearings Table 1: Cox Exact Meter sectional view data The Cox Exact design uses a tie-bolt concept, where the rotors are suspended in the housing on a common stem The stem is threaded into the downstream support, except for the 1/4 in (84) and 3/8 in (86) sizes where it is captured on both ends with a nut Stem... -
Page 6: Installation
Notes on the Swirl Effect The Cox Exact Dual Rotor uses two closely coupled rotors, turning in opposite directions The flow exiting from the first rotor greatly affects the inlet incidence angle on the rear rotor The two rotors now become hydraulically coupled Swirl conditions on the first rotor... - Page 7 Installation WARNING MAKE SURE TO PURGE ALL FLOW LINES OF FOREIGN OBJECTS AND DEBRIS PRIOR TO INSTALLING A FLOW METER TO AVOID BEARING CONTAMINATION OR ROTOR DAMAGE. DO NOT PURGE LINES WITH THE FLOW METER INSTALLED OR IRREPARABLE DAMAGE IS HIGHLY LIKELY TO OCCUR. It is critical to avoid over-spinning the meter (operating at greater than the maximum flow rate) Always select a meter sized appropriately for your application Entrained vapor or gaseous state product in the metered fluid piping can also cause the rotor to over-spin...
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Page 8: Calibration
APPLICATION FLUID CONDITIONS IN ORDER TO ACHIEVE ACCURACY, UNCERTAINTY AND REPEATABILITY METRICS. All original calibrations of Cox Exact meters are performed by Flow Dynamics, an NVLAP accredited calibration lab It is highly recommended that the flow meter be returned to Flow Dynamics for subsequent recalibrations in order to maintain performance... -
Page 9: Maintenance
Maintenance MAINTENANCE Bearing Replacement Bearings should be periodically replaced due to normal, in-service wear Failure to periodically service the bearings will result in inaccurate readings Generally, replacing the bearing will return the meter to its original calibration However, new bearings can be defective and rotor blade wear will also shift the calibration Therefore, turbine flow meters should never be returned to service after a bearing change until they have been calibrated using a primary standard flow meter calibrator... -
Page 10: Troubleshooting
Troubleshooting TROUBLESHOOTING The typical failure mode for a turbine flow meter is failure to provide an output indication of flow Troubleshooting this condition can be divided into two major sections: mechanical and electrical Mechanical Issues Mechanical items to check when there is a failure-to-indicate condition: •... -
Page 11: Flow Range Specifications
Flow Range Specifications FLOW RANGE SPECIFICATIONS Sizing and Range Flow Ranges at 1 cSt Size S.G. – 1 Pipe ID (in.) lb/hr kg/hr 0 025…3 00 9 53…1143 0 095…11 40 4 32…518 46 0 035…6 00 13 34…2286 0 132…22 71 6 05…1036 91 0 040…10 0 15 24…3810... -
Page 12: Dimensions
Dimensions DIMENSIONS AN End Connection (PER AS4395) Figure 3: AN end connection End Connection B (DL Model) Size Pipe ID in. (mm) in. (mm) in. (mm) ± 0.13 (3.30) in. (mm) 0 50 (12 70) 2 75 (69 85) 2 42 (61 47) 0 87 (22 10) 0 50 (12 70) 2 75 (69 85) -
Page 13: Npt End Connection
Dimensions NPT End Connection (Per B31.1) Figure 4: NPT end connection End Connec- B (DL Model) Size Pipe ID tion in. (mm) in. (mm) ± 0.13 (3.30) in. (mm) in. (mm) 0 25 (6 35) 2 75 (69 85) 2 42 (61 47) 0 87 (22 10) 0 375 (9 53) 2 75 (69 85) -
Page 14: Flange End Connection
Dimensions Flange End Connection (PER ASME B16.5) ØC Figure 5: Flange end connection End Con- B (DL C – 150# C – 300# C – 600# Size Pipe ID nection Model) Flange Flange Flange in. (mm) in. (mm) in. (mm) in. -
Page 15: Part Numbering Construction
Part Numbering Construction PART NUMBERING CONSTRUCTION Cox Exact Turbine Flow Meters Model Dual Rotor, MS Connector Dual Rotor, Explosion Proof Meter Size 8-4 (1/2" End Connection, 1/4" Bore) 8-6 (1/2" End Connection, 3/8" Bore) 8 (1/2" End Connection, 1/2" Bore) 10 (5/8"... - Page 16 Control. Manage. Optimize. Cox 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 specifications without notice, except to the extent an outstanding contractual obligation exists ©...
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