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COIN Back-to-Back Wedge (Model NN) Flow Meter
Brand: PresoThe 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.
This type of Differential Technology is a proven, consistent measuring technology for media in the Upstream, Midstream and Downstream applications.
The inlet section is the same diameter as the incoming pipe section and is followed by a precise segmented single piece construction angled section equal on both sides for bidirectional flow measurement.
The H/ID ratio is determined by the manufacturer according to recognized standards and formulas.
The discharge coefficient (Cd) is linear and stable in the operating flow range.
Accuracy and reliability are achieved by its rugged construction, practical design, and simple principle of operation.
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.
Features- Low pressure losses.
- Reduced pumping costs.
- Resists wear, maintenance free (no moving parts).
- Easily installed in any position with minimal straight pipe requirements.
- Turndown ratio: 10:1.
- Mass flow output with multivariable transmitter (accuracy ± 0.5% calibrated).
- Repeatability: ± 0.2% of readings.
- Reynolds number measurement down to 300.
- High viscosity measurement to 3000 and higher.
- Resists wear, no moving parts.
- Bi-directional flow measurement.
- Easily installed in any position with minimal straight pipe requirements.
- Manufactured to ASME, ANSI B31.1, NACE MR-0175, CSA-Z299.3.
- ISO-9001 certified design and fabrication.
- Optional: RTD.
Specifications
Brand
Accuracy
- (Calibrated) ± 0.5 %
- (Uncalibrated) ± 3 %
Applications
- Bi-Directional Flow Measurement
- Viscous & Non-Newtonian Liquids
- CO₂ or Water Injection to Revitalize Existing Oil and/or Natural Gas Fields
- Processes with High Operating Pressures and/or High Operating Temperatures
- Measuring Media Prone to Agglomeration & Gum Formation
- Liquids with Low Electrical Conductivity
Industries
- Chemical, Refining & Petrochemical
- Oil & Gas
- Process or Industrial
Pressure Range
- Dependent on Flange Rating psi
Size
- 1/2 to 6”
Temperature Range
- Up to 800° F