PEFTEC 2019 - Abstract

Abstract Title: Density Measurement with an Oscillating U-tube Density Meter - Versatile Applications and Different Capabilities in the Petroleum Industry
Abstract Type: Oral
Session Choice: Standards & Quality Assurance
Presenter Name: Dr Jelena Fischer
Co-authors:Mrs Julia Sattler
Mr Siegfried Hold
Dr Hans Hahn
Dr Barbara Klug-Santner
Company/Organisation: Anton-Paar GmbH
Country: Austria

Abstract Information :

From handheld to lab, from onsite to offshore, from upstream to downstream- these are some of the examples density meters with an oscillating U-tube are used. In all these fields the petroleum products have to comply with standards.

Density measurement based on the oscillating U-tube principle was invented in 1967, 50 years ago. Since then the density measurement and the determination of concentration of liquids and gases was revolutionized by this technique. Furthermore the diversity of oscillating U-tube density meters has increased tremendously: from handheld to benchtop density meters and from mobile to high-pressure and high temperature density meters- these are the different models for different applications. The main advantages compared to other methods (e.g. pycnometer, hydrometer) are excellent accuracy, short measurement time and small sample volume. Density meters are used in many different industries and applications such as food, chemical, petroleum etc.

In the presentation the basic principle of the oscillating U-tube is discussed and the advantages compared to classic density methods like pycnometer and hydrometer are highlighted. The advantage of measuring petroleum samples directly at the tank by using an Ex-proof handheld instrument is accentuated. The importance of measuring density at different stages of the refining process in compliance with standards is demonstrated on the basis of practical application examples e.g., the measurement of crude oil, the measurement of fuels and lubes and the measurement of bitumen.