State of the Art Density Meters: Highest Levels of User Comfort and Operator Safety

Two ASTM standards specify conditions for density measurements in the lab by means of a digital density meter: ASTM D4052 for petroleum products and lubricating oils, and ASTM D5002 for crude oils.

To achieve accurate density results with minimum effort according to these standards, it is useful to have a density meter which provides automatic viscosity correction and full-range temperature adjustment. Density meters with a reference oscillator need only one density adjustment to provide density results across the whole range of measuring temperatures. The advantage of borosilicate glass oscillating U-tube density meters is that the sample is visible for observing the filling process, so any gas or air bubbles can be seen. With high-end density meters, an intelligent bubble detection feature (physical method) serves as additional verification of bubble-free filling. DMA Generation M density meters, from Anton Paar (Austria), provide these state-of-the-art measuring technologies, utmost levels of reliability, accuracy as well as assistance to operators dealing with many different measurements at one time.

Density values automatically converted into relevant quantities, namely specific gravity (SG), API values in accordance with ASTM D1250 (standard guide for use of the petroleum measurement tables).

Live camera image (or inspection window) ensuring bubble-free filling that is ideally assisted by the instrument’s advanced analysis to detect filling errors.

Possibility to check the purity of the used reagents by determining the density and comparing it to the target value.

Temperature stability and one adjustment for the whole temperature range – as can only be achieved by a built-in reference oscillator.