Badger Meter Cox User Manual
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Badger Meter Cox User Manual

Turbine flow precision meters
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Precision Meters
Turbine Flow Meters
User Manual
TUR-UM-00477-EN-01 (May 2014)

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  • Page 1 Precision Meters Turbine Flow Meters User Manual TUR-UM-00477-EN-01 (May 2014)
  • Page 2 Precision Meters, Turbine Flow Meters Page ii May 2014...

  • Page 3: Table Of Contents

    Cox Precision Ball Bearing Type . . . . . . . . . . . . . . . . . .
  • Page 4 Precision Meters, Turbine Flow Meters NPT End Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Flange End Fitting .

  • Page 5: Description And Use

    . All Cox Precision Turbine Flow Meters are designed to provide a high frequency output voltage at the maximum of their flow range . This high frequency signal improves resolution and standardized output permits several overlapping range flow meters to be connected in series to one indicating instrument .

  • Page 6: Safety Information

    The installation of the Cox Precision Turbine Flow Meters must comply with all applicable federal, state, and local rules, regulations, and codes . Failures to read and follow these instructions can lead to misapplication or misuse of the Cox Precision Turbine Flow Meters, resulting in personal injury and damage to equipment .

  • Page 7: Installation

    Piping Recommended layout for Cox Precision Turbine Flow Meters specifies a straight section of pipe or tube in the same size as the flow meter and equal in length to 10 diameters on the upstream side, and a similar section equal in length to 5 diameters in order to retard the formation of swirls in the liquid, which can cause incorrect flow meter output .

  • Page 8: Procedure For Cleaning A Turbine Meter After Water Calibration And/Or Service

    #1400-63 . Flow meter serial number must be provided when ordering parts . Figure 2: Cox Precision LoFlo turbine flow meter Figure 3: Cox precision turbine flow meter DO NOT INTERCHANGE FLOW METER PARTS OTHER THAN BEARINGS AND RETAINING RINGS. THIS PRECAUTION IS NECESSARY TO PRESERVE LINEARITY AND REPEATABILITY.

  • Page 9: Reassembly

    User Manual REASSEMBLY Reassembly is the reverse of disassembly except for the following: • On Precision Turbine Flow Meters where shaft bearings are provided with a retainer, always install with the retainer flange facing upstream . • Inspect rotor for markings as shown in Figure 4 to indicate flow direction before assembly .
  • Page 10 Precision Meters, Turbine Flow Meters TROUBLESHOOTING Issue Possible Cause Remedy Meter indicates higher flow than actual . Cavitation . Increase back pressure . Meter indicates high flow . Dirt blocking flow area rotor . Clean meter; add filter . Meter indicates low flow . Dirt dragging rotor .

  • Page 11: Technical Terms

    The maximum deviation from the corresponding data points taken from repeated tests under identical conditions . Linearity This is defined as the deviation from the mean calibration factor (K) and is expressed as being within a certain tolerance . Cox Precision Turbine Flow Meters are linear to ± 0 .5% over the range shown .
  • Page 12 The instrument referenced above was calibrated using standards traceable to the National Institute of Standards and Technology. Calibration reports for references maintained by Badger Meter, Inc. are available upon request to the customer of this calibration report. The volumetric flow rates reported are within a best uncertainty of +/- .037% of reading (Represents an expanded uncertainty using a coverage factor, k = 2, at an approximate level of confidence of 95%) and applies to...
  • Page 13 Materials listed in Table 3 are recommended and used for most turbine flow meter applications . For unusual requirements— such as those outside the range of –300…350° F or those with extremely corrosive liquids—consult the Badger Meter Sales Department . Part...

  • Page 14: Dimensions (Liquid)

    Precision Meters, Turbine Flow Meters DIMENSIONS (LIQUID) Dimension B specifies the most common pickoff type . Actual size may vary depending on pickoff choice . Consult factory for details . AN End Fitting HEX BODY SQUARE BODY Figure 7: AN end fitting End Fitting B (RF) B (MAG)

  • Page 15: Flange End Fitting

    CX10FXXXCB 5.50 1/2" CX12FXXXCB 5.50 3/4" CX16FXXXCB 5.50 1" CX20FXXXCB 6.00 1-1/4" CX24FXXXCB 6.00 1-1/2" User Manual CX32FXXXCB 6.50 2" Flange End Fitting 2X FLANGES (PER ASME B16.5) ØC Figure 9: Flange end fitting B (RF) B (MAG) C—150# Flange C—300# Flange C—600# Flange Size...

  • Page 16: Tri-Clamp End Fitting

    CX12SAXXCB 3.56 1.77 1-1/4" CX16SAXXCB 3.56 1.99 1-1/2" CX20SAXXCB 4.59 2.17 1-1/2" CX24SAXXCB 4.59 2.38 1-1/2" CX32SAXXCB 6.06 3.18 2" Precision Meters, Turbine Flow Meters Tri-Clamp End Fitting 2X TRI-CLAMP END FITTINGS (PER ASME BPE) Figure 11: Tri-clamp end fitting End Fitting B (RF) B (MAG)
  • Page 17 User Manual LoFlo The dimension from the center of bore to top of pickoff represents the most common pickoff types . Length may vary depending on pickoff choice . Consult factory for details . OTEE: Dimensions below are shown in inches . 2X AN END FITTINGS (PER AS4395) 1.00...

  • Page 18: Dimensions (Gas)

    Precision Meters, Turbine Flow Meters DIMENSIONS (GAS) Dimension B specifies the most common pickoff type . Actual size may vary depending on pickoff choice . Consult factory for details . AN End Fitting HEX BODY SQUARE BODY Figure 14: AN end fitting End Fitting Size in.

  • Page 19: Flange End Fitting

    User Manual Flange End Fitting 2X FLANGES (PER ASME B16.5) AN-4 PRESSURE TAP FITTING (PER AS4395) Figure 16: Flange and fitting Size 150# Flange 300# Flange 600# Flange in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) 5 .00 (127 .0) 2 .80 (71 .12) 4 .10 (104 .1)
  • Page 20 Precision Meters, Turbine Flow Meters Figure 17: Typical linearity curve for a size 20 flow meter UVC Plot, Three Viscosities 7000 6500 0.7 cStk 6000 4.2 cStk 5500 25.5 cStk 5000 4500 4000 1,000 10,000 Roshko Number Figure 18: UVC plot Page 20 May 2014...

  • Page 21: Factors Affecting Linearity

    User Manual FACTORS AFFECTING LINEARITY There are many factors affecting the linearity of turbine flow meters . The following enumerates some of these factors and their effect . Size The size of the meter selected is determined by the flow range required and the fluid characteristics . Standard flow ranges are listed in the Product Data Sheet .

  • Page 22: Mounting For Calibration

    . Turbine flow meters calibrated at one temperature and operated at another require correction of their K-Factor . Cox Precision Turbine Flow Meters can operate from –350…500° F, and up to 800° F using a special high temperature pickoff .

  • Page 23: Recalibration

    User Manual RECALIBRATION • Recalibration is not necessary following a cleaning operation or the replacement of bearings, snap rings, springs or spacers . • Recalibrate the flow meter if the rotor hub, or rotor and flow straightener assembly is replaced . •...
  • Page 24 The Americas | Badger Meter | 4545 West Brown Deer Rd | PO Box 245036 | Milwaukee, WI 53224-9536 | 800-876-3837 | 414-355-0400 México | Badger Meter de las Americas, S.A. de C.V. | Pedro Luis Ogazón N°32 | Esq. Angelina N°24 | Colonia Guadalupe Inn | CP 01050 | México, DF | México | +52-55-5662-0882...

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