Custody transfer accuracy is the law in petroleum.
In the petroleum industry, every liter measured at a transfer point has a dollar value. Refineries, terminals, and pipeline operators are legally required to use traceable, certified measurement equipment for custody transfer — the process of transferring ownership of a liquid product from one party to another.
Incorrect calibration means incorrect billing. Over the volumes moved by a petroleum terminal, even a 0.1% error represents significant monetary loss. Regulatory frameworks (API MPMS, OIML R117, NIST) define exactly what accuracy class, traceability, and documentation is required.
Lonetti has supplied calibration equipment to the petroleum industry since our first Exxon Mobil order in 1960. Our products are built to the API and OIML standards that govern custody transfer — calibrated by INTI and traceable to international metrology references.
What operators in this industry need to solve.
Custody transfer accuracy
Prove meter accuracy to the legal standard required by your jurisdiction and trading counterparty. API MPMS, OIML R117, or NIST HB 105-3.
Fiscal metering compliance
Demonstrate to tax authorities that your meters are within tolerance. A traceable calibration certificate is the documentary evidence.
Fleet and tanker verification
Verify individual compartments of tanker trucks, railcars, and vessels at your terminal. Multi-tier tower systems handle entire fleets.
Pipe prover base volume
Establish and periodically re-verify the base volume of pipe provers per API MPMS Ch. 4.9 — using water draw calibration.
Equipment specified in this vertical.
Custom Stainless Steel Prover Tanks
Volumetric reference vessels from 50L to 5,000L+, built in 304 SS to OIML R117 and API MPMS Ch.
Waterdraw Pipe Prover Calibration Systems
Complete water draw systems for pipe prover base-volume determination — including reference vessels, pump skid, valving, and instrumentation.
Tanker Truck Liquid Calibration Tower Systems
Multi-tier calibration tower systems for verifying tanker truck and cistern vehicle compartments.
Custom Liquid Calibration Test Benches
Fixed and mobile test benches for meter verification — flow loop, reference standard, control panel, and instrumentation engineered around your meter portfolio.
MINILAB® — Self-Contained Mobile Calibration Laboratories
A complete calibration laboratory built into a van.
The regulations Lonetti equipment is built to satisfy.
Specific use cases in this industry.
Refinery terminals
Prover tanks for custody transfer of crude and refined products at loading racks and marine terminals.
Pipeline takeoffs
MINILAB® vans and test benches for periodic proving of turbine and PD meters at remote pipeline stations.
Tanker truck fleets
Calibration towers for annual compartment verification of petroleum tanker trucks and road cisterns.
Gas station inspection
Test measures for weights & measures inspectors verifying fuel dispenser accuracy at retail stations.
Aviation fuel operations
Stainless steel test measures and prover tanks for jet fuel volume verification at airports.
LPG distribution
Pressurized prover tank configurations for LPG custody transfer and tanker truck calibration.
Common questions.
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