Meter Provers for Pipeline – Custody Transfer Applications
FMD Meter Provers are used worldwide in the petroleum industry to verify the accuracy of liquid flow meters. Specifically designed for field use in calibrating flow meters for custody transfer applications, these small volume provers adhere to strict quality standards. They offer accurate and reliable measurements while minimizing product displacement. Our provers comply with API MPMS Chapter 4 and other international standards, and are compatible with various flow meter types, including Coriolis, turbine, helical turbine, positive displacement (PD), and ultrasonic.
FMD meter provers work well with most hydrocarbon products, such as crude oil, refined products, natural gas liquids (NGLs), cryogenic liquids, and hot bitumen. Their compact design makes them ideal for in-situ flow meter proving during custody transfer processes.
PIPELINE – CUSTODY TRANSFER SMALL VOLUME METER PROVING SOLUTIONS

Application Specific Meter Proving Solutions for all Flowmeter Types
Flow Management Devices (FMD) offers Small Volume Provers that play a crucial role in custody transfer applications in the petroleum industry. These provers are used worldwide to verify the accuracy of liquid flow meters.
- Compliance with Standards: FMD Meter Provers are designed to comply with API MPMS Chapter 4 and other international standards, ensuring reliability and accuracy. Click on the Approvals – Certifications tab for additional information.
- Compatibility: Our small volume provers can be used with various flow meter types, including Coriolis, turbine, helical turbine, PD (positive displacement), and ultrasonic meters.
- Hydrocarbon Application Compatibility: FMD Meter Provers work seamlessly with most hydrocarbon products, such as crude oil, refined products, NGLs (natural gas liquids), cryogenic liquids, and even hot bitumen. Click on the Applications tab for a more comprehensive list.
- In Situ Proving: FMD Meter Provers are ideal for in situ proving of flow meters in custody transfer applications. They provide accurate measurements while minimizing product displacement.
Choose FMD Small Volume Provers for reliable flow meter verification.
- 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)
- CO2
- Diesel
- Ethane
- Ethylene
- Fuel Oil
- Gasoline
- Isobutane
- Jet Fuel
- Kerosene
- Low Temperature Hydrocarbon Gas Liquids (HGLs)
- LPGs
- LNG
- Methane
- Methanol
- NGLs
- Naphtha
- Petrochemicals
- Propane
- Propylene
- Refined Products
- Other Products (contact factory)
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- FMD has over 15 years experience with both simple & complex applications
- Fluid compatibility
- Meter compatibility
- Hardened chrome lined flow tube for durability
- Standard wetted material 304 SS
- Optional 316 for cold temps or harsh environments
- Smooth belt driven clutch
- Leak detection
- Highly repeatable optical switches
- Duplex flanges standard
FMD Provers have accessories and options which allow you to customize your prover for your specific application needs.
Listed below are some of the available options, otherwise, visit our Accessories & Spare Parts Page for additional info.
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- Sensor Kits
- Drain Kits
- Seal Kits & Spare Parts Kits
- Thermal Relief Kits
- Leak Detector Kit
- Shaft Seal Monitor Kit
- Prover Spring Assist
- Prover Validation Kit
- Insualtion Jacketing Kits
- Prover Data Acquisition (PDAQ)
- Density (Mass Proving Kit)
- Spectacle Blind Kit
- Water Draw Kit
FMD Meter Provers Comply with the following standards:
- US/CSA CLASS 1 DIV 1 40°C
- ATEX Ex d mb [ia] IIB T3 Gb -20° to 40°C
- IECEx Ex d mb [ia] IIB T3 Gb -20° to 40°C
- PED
- ISO 9001 Certification
- ISO 17025 (Flow Lab) Certification
- API MPMS Chapter 4
DOCUMENTATION
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