FLOW METER CALIBRATION GUIDE
FLOW METER
CALIBRATION GUIDE
A Practical Field Manual for Technicians, Metering Engineers
and Custody Transfer Auditors
Covering Turbine, Coriolis, and Ultrasonic Flow Meters,
LPG Dispensers, and Custody Transfer Measurement
Author: Bona Oil and Gas Digital Product
Table of Contents
Introduction 3
Chapter 1: Turbine Flow Meters 4
Chapter 2: Coriolis Flow Meters 5
Chapter 3: Ultrasonic Flow Meters 7
Chapter 4: LPG Dispensers 8
Chapter 5: Custody Transfer Measurements 10
Chapter 6: Solutions — Troubleshooting Common Calibration Problems 12
Conclusion 13
Introduction
Flow measurement sits at the financial heart of the oil and gas industry. Every barrel, tonne, and litre that changes hands between a producer, a shipper, a terminal, and a customer is tied to a number generated by a flow meter. When that number drifts even slightly out of tolerance, the consequences are immediate: disputed invoices, regulatory penalties, lost revenue, and in the case of LPG dispensers, direct exposure to the consumer at the pump.
This guide was built for the people who keep those numbers honest — instrument technicians, metering engineers, calibration contractors, terminal supervisors, and custody transfer auditors working across upstream, midstream, and downstream operations. It focuses on five technologies that dominate day-to-day fiscal and process metering: turbine meters, Coriolis meters, ultrasonic meters, LPG dispenser metering systems, and the custody transfer principles that tie them all together.
Rather than repeating theory that is already well covered in vendor manuals, this guide is organized around what actually happens in the field: how each meter type works in practical terms, how to calibrate and verify it correctly, what typically goes wrong, and how to fix it. Every chapter ends with a set of actionable tips you can apply on your next job, and the guide closes with a troubleshooting-style solutions section and a consolidated calibration checklist.
How to Use This Guide
Read Chapters 1–3 in full if you are responsible for more than one meter technology — the comparison table in Chapter 6 will help you decide which meter fits which application.
Jump directly to Chapter 4 if your focus is retail or bulk LPG dispenser calibration and legal metrology compliance.
Use Chapter 5 as a standalone reference before any custody transfer audit, witness proving, or contractual handover.
Treat the tip boxes as a quick-reference card you can screenshot or print and take to the field.
A flow meter is only as accurate as its last valid calibration. This guide exists to make sure that calibration is done right, every time.