Features:

• High accuracy: Custody-transfer-quality measurements with ±0.2% flow rate repeatability and a single K-factor linearity of better than ±1.0% reading over flow range
• Wide application: Gas meters from oxygen to ethylene for natural gas production, gas transmission, petrochemical, transport, aerospace, and petroleum production and refining industries
• Responsiveness: Rotor response in milliseconds for precision, even in rapidly changing environments
• Wide range: Depending on the flowing gas density, the meter often provides a turndown ratio greater than 10:1; range extended with the addition of optional linearizing electronics
• Symmetrical bidirectional design: Ideal for reverse flow applications in which flow capacities are the same in either direction; electronic options provide instantaneous flow direction sensing
• Compactness and efficiency: Accommodation of large flow rates in a small meter and at a lower pressure drop; use with reduced-diameter block valves and meter runs saves on installation costs
• Low maintenance requirements: Sealed, selflubricating bearings enable maintenance-free operation for up to 10 years
• Unibody construction: 4-in and smaller nominal pipe size bodies are machined from solid material, including the flange shape as applicable, eliminating pressure-retaining welds and related integrity concerns 
• Integral pressure tap: Precisely positioned to accommodate pressure measurement at the turbine meter

• Custody-transfer measurement
• Fuel gas consumption
• Vapor recovery
• High-pressure cryogenic fluids

• Flow rangeability
• Low pressure loss
• Accuracy independent of gas composition change
• No power requirement

• Low-pressure-loss design with low-friction bearings and a rotor weighing less than 0.005 lbm [2.4 g] for challenging low-pressure, low-gas-density flow measurement applications, including vapor recovery, fuel gas measurement, and combustion air flow
• Durable nonlubricated tungsten carbide “V” bearings and a high-pressure stainless steel body for dirty sour production gas (avoid the use of damaging liquid slugs)
• Up to 30:1 flow rate turndown (depending on range selected) by operating the meter at twice the upper published capacity for short periods
• Compact installation with ability to mount between raised-faced flanges in any orientation
• Facilitation of large changes in the application flow rate with meter body that can accept any of three different flow range cartridge

• Universal body selection: The calibrated internals are manufactured by modifying the standard liquid internal with ballbearings in place of the tungsten carbide sleeve bearings. As a result, the ball bearing meter can install in any same-size or -style NUFLO turbine technology body. Calibrated internal kits can be purchased with the body or refit into liquid meters that are in inventory.
• Suitability for cryogenic gases: The NUFLO technology ball bearing flowmeter is suitable for measuring fluids that are in a liquid or dense-vapor state because of elevated flowing pressure
• Rugged cast rotor
• Standard volume, mass, or energy may be determined by pairing the meter with a NUFLO MC Series flow totalizer or Scanner flow computer. The Scanner 3100 flow computer offers the capability to correctly compute values as gases transition through dense vapor into liquid state. 
• Self-lubricating bearings impregnated with a dry powder lubricant for gas applications; in liquid applications, the bearings rely on the process for lubrication

• Linearity (BARTON Models 7100 and 7200)
• ±1% of reading over flow range for meters smaller than 1"
• ±0.25% of reading over flow range for meters 1" and larger
• ±0.15% of reading over limited ranges for 1" meters and larger (contact local sales office for details)
• Linearity (BARTON Model 7300) 
• ±0.25% of reading over flow range 
• ±0.15% of reading over limited ranges (contact local sales office for details)
• Repeatability : ±0.02% of reading
• Symmetrical Bi-Directional Design – Ideal for reverse flow applications where flow capacities are the same in either direction. Electronic options provide instantaneous flow direction sensing.
• High-Quality Bearings – Model 7100 and 7300 meters come standard with wear-resistant tungsten carbide sleeve bearings, and model 7200 meters are designed with self-lubricating, precision stainless steel bearings with dry lubricant impregnated ball separators.

• Explosion-proof/Flameproof CSA listed Class I, Division 1, Group B,C,D; Class II, E,F,G; Class III, Enclosure 4 waterproof to NEC (USA) and CEC (Canadian) standards, including single seal certification to ANSI 12.27.0-14 Section 1 Model 7000 Series Turbine Flowmeter
•  ATEX certified, EEx d IIC (Model 7100, 7200, 7300)
•  Measurement Canada Custody Transfer Certification G-0210 (Model 7400)
•  Canadian Registration Number 0F0123.2C (Model 7400)
•  Intrinsically Safe/Non-incendive approved to various standards as governed by the certification of the readout device and the specific entity parameters of the pickup coils listed with that device.

• Conformity to PED 97/23/EC

• Lower installation cost
• Less expensive than a conventional, flanged meter
• Spreader nuts enable easy removal and inspection
• The raised-face EZ-IN meter will mate to any flange rated ANSI 150# to 1500#. The ring-joint (RTJ) version will mate to ANSI 900#, 1500# or 2500# RTJ flange (specify flange type when ordering)
• CE-marked 8" x 8" EZ-IN RF requires special centering rings