ISO 6551:1982

Petroleum liquids and gases — Fidelity and security of dynamic measurement — Cabled transmission of electric and/or electronic pulsed data

Establishes guidelines for ensuring the quantities stated, a main objective being to ensure the integrity of the primary indication. In order to achieve different levels of security, criteria and recommendations for the design, installation, use and maintenance of the relevant equipment are laid down. Regulatory requirements, including those for safety, are not specifically covered in detail but certain general cautionary notes on safety are included for guidance.