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COIN® Back-to-Back Wedge (Model NN) Flow Meter

COIN® Back-to-Back Wedge (Model NN) Flow Meter

COIN® Back-to-Back Wedge (Model NN) Flow Meter

The Preso® COIN® Back-to-Back wedge flow meter accommodates most flows, even the most abrasive. This compact DP flow meter has taps built into the flanges to read the instrument taps.  This type of wedge meter is effective with clean fluids, gas and steam applications. It stands alone in its ability to maintain the necessary square root relationship between flow rate and differential pressure for almost any type of flow.

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  • Size
    12...152 mm
    1/2...6 in.
  • Temperature Range
    Up to 426 °C
    Up to 800 °F
  • Pressure Range
    Dependent on flange rating
    Dependent on flange rating
  • Accuracy
    (uncalibrated) ±3% (calibrated) ±0.5%
    (uncalibrated) ±3% (calibrated) ±0.5%
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Rugged construction, practical design, and a simple principle of operation.

Well suited for measuring clean fluids, gas and steam applications.

  • Reynolds number measurement down to 300
  • High viscosity measurement to 3000 and higher
  • Resists wear, no moving parts
  • Bi-Directional flow measurement
  • Narrow face-to-face affords lowest installed cost low pressure losses
  • Resists wear, maintenance free (no moving parts)

Product Specifications

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  • Pipe Size
    12...152 mm
    1/2...6 in.
  • Pressure Range
    Dependent on flange rating
    Dependent on flange rating
  • Temperature Range
    Up to 426° C
    Up to 800° F
  • Accuracy
    ±3% uncalibrated; up to 0.5% calibrated
    ±3% uncalibrated; up to 0.5% calibrated
  • Repeatability
    ±0.2%
    ±0.2%
  • Turndown Ratio
    10:1
    10:1

Market Applications

  • Oil & Gas

    In the oil and gas industry, the flow of liquids and gases must be measured during every phase of exploration, production and transportation. These applications demand the highest oil and gas meter accuracy and reliability, as well as long-term stability and a low cost-of-ownership. Badger Meter offers one of the broadest product portfolios for use in upstream operations that span offshore to onshore activities, including well testing, enhanced oil recovery, fractionation, completion and separation to recover and prepare crude oil and natural gas.

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  • Industrial Process

    The measurement and monitoring of flow, water quality and toxic and combustible gas plays a vital role in industrial processes for consistent delivery of quality control, personnel safety, environmental protection, process monitoring and optimization. Our comprehensive range of robust, real-time and reliable instrumentation provides dependable solutions that are easy to install, simple to maintain, creates safe areas of work and deliver increased regulation compliance.

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  • Refining, Chemical & Petrochemical

    As a worldwide leader in flow metering technologies for over 110 years, Badger Meter offers one of the broadest product portfolios for the chemical and petrochemical processing industry. From differential pressure and Coriolis flow meters to advanced control valves, our solutions help you measure what matters and improve the efficiency and reliability of your operations. Badger Meter has the proven tools and expertise to help you manage your critical resources.

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Product Documentation

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Product Data Sheets | English Preso® COIN® Segmented Wedge Back to Back Flow Meter
Manuals & Guides | English Flow Meter COIN®
Application Data Sheets | English Preso® Applications

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Software & Firmware

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Software | Version v5.37.23.0 | Updated August 19, 2020 | 33.23 MB PresoCalc Setup Tool Preso See Release Notes
Software | Version v5.37.23.0 | Updated August 19, 2020 | 33.23 MB PresoCalc Setup Tool Preso See Release Notes

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Badger Meter is an industry-leading innovator in flow measurement, water quality and control products, serving water utilities, municipalities and commercial and industrial customers worldwide.

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