FLOW MD PROVIDES A COMPLETE LINE OF SMALL VOLUME PROVERS FOR ALL YOUR APPLICATION NEEDS

FMD is your Small Volume Prover specialist with over 15 years experience and a proven track record with all meter and application types.

A complete line of FMD Small Volume Provers

Flow Management Devices raises the bar in Small Volume Prover design and performance.

FMD SMALL VOLUME PROVER FLOW RANGES AND DISPLACED VOLUMES

 

FMD Small Volume Prover Flow Rates
Max Flow Rates FMD-007 FMD-015 FMD-025 FMD-035 FMD-045 FMD-060 FMD-060EV FMD-090 FMD-090EV FMD-130 FMD-200 FMD-200EV
BPH 1,000 2,100 3,570 5,000 6,400 8,500 8,500 12,850 12,850 18,500 28,500 28,500
GPM 700 1,500 2,500 3,500 4,500 6,000 6,000 9,000 9,000 13,000 20,000 20,000
M3/HR 150 330 560 790 1,022 1,350 1,350 2,000 2,000 2,900 4,500 4,500

Displaced Volumes
FMD Small VOlume Prover Displaced Volumes
FMD Model Number FMD-007 FMD-015 FMD-025 FMD-035 FMD-045 FMD-060 FMD-060EV FMD-090 FMD-090EV FMD-130 FMD-200 FMD-200EV
Gallons Primary 5 10 20 25 35 50 75 80 120 90 140 210
Secondary 4 8 15 20 25 40 60 60 90 60 100 170
Litres Primary 19 40 75 95 130 195 290 300 450 340 520 800
Secondary 15 30 60 75 100 150 225 225 340 250 400 640

FMD Small Volume Prover Flange Sizes
FMD Model Number FMD-007 FMD-015 FMD-025 FMD-035 FMD-045 FMD-060 FMD-060EV FMD-090 FMD-090EV FMD-130 FMD-200 FMD-200EV
Inlet/Outlet Flange Size (ANSI B16.5) 3″ 4″ 6″ 6″ 8″ 10″ 10″ 12″ 12″ 16″ 20″ 20″

*FMD Small Volume Provers are compatibile with most meter types, including Coriolis, Turbine, Helical Turbine, Positive Displacement and Ultrasonic.  Meter type, operating conditions and fluid characteristics will affect prover sizing.  Please reach out to us to discuss your specific application and the optimal FMD Prover for your application.

FMD PROVER MODELS AND SPECIFICATIONS

FMD-007
FMD-007 Small Volume Prover
FMD-015
FMD-015 Small Volume Prover
FMD-025
FMD-025 Small Volume Prover
FMD-035
FMD-035 Small Volume Prover
FMD-045
FMD-045 Small Volume Prover
FMD-060
FMD-060 Small Volume Prover
FMD-060EV
FMD-060EV Small Volume Prover
FMD-090
FMD-090 Small Volume Prover
FMD-090EV
FMD-090EV Small Volume Prover
FMD-130
FMD-130 Small Volume Prover
FMD-200
FMD-200 Small Volume Prover
FMD-200EV
FMD-200EV Small Volume Prover

FMD SMALL VOLUME PROVER TECHNICAL REFERENCES & SPECIFICATIONS

API MPMS Chapter 4.2

  • ASME VIII Div. 1
  • ASME II Part D
  • ASME B31.3/B16.5
  • NACE MR0175

  • US/CSA Class 1 Div. 1/2 40°C/60°C
  • ATEX Ex d mb [ia] IIB T3/T4 Gb -20° to 40°C
  • IECEx Ex d mb [ia] IIB T3/T4 Gb -20° to 40°C
  • NEMA 4X/7/9, IP66 (Enclosures)
  • Exd IIB, IP66 (Enclosures)

  • Standard -20° to 140°F (-29° to 60°C)
  • Arctic -50° to 100°F (-45° to 38°C)

  • Standard: -20° to 120°F (-29° to 49°C)
  • High Temperature: 120° to 500°F (49° to 260°C)
  • Low Temperature: -50° to 120°F (-45° to 49°C)
  • Cryogenic: -150° to 120°F (-101° to 49°C)
  • LNG: -265o to 120oF (-165o to 49oC)

WHY CHOOSE FLOW MD?

Flow MDs patented line of small volume provers, provides an accurate, repeatable, and fast measurement with minimal product displacement, while being compatible with almost all liquid flowmeter types.

Our unique and compact meter prover design utilizes pulse interpolation electronics, a patented drive end, a motor driven piston with durable carbon fiber belts, a smooth bore cylinder, a poppet valve, and optical position sensors.

The Flow MD line of Small Volume Unidirectional Captive Displacement Provers incorporates Double Chronometry as recognized by API 4.6 and is compliant with API 4.2 Direct Master Meter Proving.

FMD Small Volume Prover Features include:

  • Designed Per API MPMS Chapter 4 Standards
  • Easliy handles heavy crude and other hydrocarbon liquids
  • Flow ranges from 142 BPH to 35,000 BPH
  • Chrome lined flow tubes for longer life and better durability
  • All wetted parts stainless / PTFE
  • Smooth belt drive with clutch
  • Metric switchbar option available
  • Galvanized carbon steel frame
  • Materials of Construction: Stainless Steel – 304 or 316, Duplex Steel
  • All flanges: ANSI B16.5

The piston-poppet assembly design minimizes flow disturbances, and the all-stainless steel drive end holds up to harsh field proving conditions, while providing easy access to common serviceable parts. The observation windows provide visual access to the drive end.

Our chrome-lined flow tubes provide enhanced durability and better resistance to particulate and/or chemical damage.

Flow Management Devices raises the bar in Small Volume Prover design and performance.

SERVICE, EXPERIENCE, INNOVATION & EXCELLENCE

PROVER OVERVIEW, INFORMATION & FAQ’s

What is a Prover?

A Prover is a device with a “known traceable volume” designed to calibrate or prove a liquid flow meter’s accuracy and repeatability under actual operating conditions. Provers can be stationary or portable devices used to calibrate and verify the accuracy and repeatability of both volumetric and mass flow meters. Provers are commonly used in the hydrocarbon industry for custody transfer or fiscal applications, where accuracy is critical.

A Prover Establishes:

  • The K-Factor (pulses per unit volume) of a meter
  • The Meter Factor (factor used with a meter to correct accuracy for flow conditions)
  • The Linearity over the calibrated flow range for the meter
  • The repeatability for the meter system

Why is it Important to prove a flow meter with a Flow MD small volume prover?

Simply stated, to provide an accurate measurement.

In addition, proving is critical for financial transactions and custody transfer applications to maintain profitability and reduce financial uncertainties.

Flow meters are generally calibrated in a factory using clean and consistent factory conditions; once they reach the field, they are subject to various conditions in the field. Over time these product and process variations can lead to accuracy shifts known as drifting.

FMDs Small Volume or Unidirectional Captive Displacement Meter Provers use the known volume of the prover in comparison to the output of the flowmeter to calculate a correction factor allowing the user to adjust the flowmeter accordingly for a truly accurate representation of flow rates.

What Applications Can I Use an FMD Small Volume Prover For?

Visit our Application Specific Prover Page for additional information.

Flow Management Devices Small Volume Meter Provers are generally used in the petroleum and petrochemical industries to measure liquid products. FMDs provers ensure measurement quality for both custody and non-custody transfer applications and are configurable for both stationary or portable proving applications where accuracy is key.

FMDs Small Volume Provers are commonly used for the following hydrocarbon products:

  • Bitumen
  • Butane
  • Condensate
  • Crude Oil – Light (API > 31.1)
  • Crude Oil – Medium (API 22.3 – 31.1)
  • Crude Oil – Heavy (API < 22.3)
  • Crude Oil – Extra Heavy (API < 10.0)
  • Diesel
  • Ethane
  • Ethylene
  • Fuel Oil
  • Gasoline
  • Isobutane
  • Jet Fuel
  • Kerosene
  • Low Temperature Hydrocarbon Gas Liquids (HGLs)
  • LPGs
  • Methane
  • Methanol
  • NGL
  • Naphtha
  • Petrochemicals
  • Propane
  • Propylene
  • Refined Products
  • Other Products (contact factory)

What type of flow meters are small volume provers compatible with?

FMD small volume meter provers can be used with the following flow meter types:

  • Coriolis Meters
  • Positive Displacement Meters
  • Liquid Ultrasonic Meters
  • Turbine Meters
  • Helical Turbine Meters
  • Multi-Viscosity Turbine Meters

Please always verify prover sizing with Flow MD as meter type, process fluid and operating conditions must be considered to properly size a prover. Please reach out to us to discuss your specific application and the optimal FMD Prover for your application.

Where can FMD small volume meter provers be used?

Upstream
  • Production LACTs
  • Offloading & Storage
  • Upstream Production Facilities
  • Floating Production Storage and Offloading (FPSO)
Midstream
  • Pipelines
  • Refineries
  • Offloading & Storage
Downstream
  • Petrochemical Plants
  • Load Racks
  • Terminals
  • Offloading and Storage

How to obtain a meter factor using a FMD small volume meter prover:

The meter factor is obtained by dividing the prover test volume by the indicated volume of the meter. Once the meter factor is established, it is used as a volume correction in the calculation for the standard net volume of a receipt or delivery of liquids.

What are the benefits of Chrome Lined Flow Tubes?

Flow MD small volume provers use chrome lined flow tubes to provide enhanced durability and better resistance to particulate and or chemical damage.

Please continue reading below for additional information or for an in-depth read, see our Specification Review.  

Maximizing Flow Tube Performance

To prevent tube damage from particulates and contaminants, using a hardened material like chrome plating is ideal due to its superior hardness and durability compared to stainless steel. Chrome plating, with a Rockwell C Hardness (HRC) of 68-72, significantly outperforms 304 SS and 316 SS, which have HRC values of less than 20 and 25-30, respectively. Flow tests on chrome-lined and non-chromed SST tubes showed that chrome-lined tubes resisted scarring and damage from particulates much better.

Seal Compatibility

Dynamic seals in compact provers require specific hardness and surface finish standards to function effectively. For non-pressurized applications, a hardness of 40 HRC is recommended, while 55-65 HRC is ideal for pressurized applications. Chrome finishes not only meet these hardness requirements but also maintain optimal surface finishes (8 to 16 μin RMS) more easily than polished stainless steel, reducing seal wear and preventing flow tube damage.