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DMA Generation M

The DMA Generation M density meters measure the density and concentration of liquids. They provide preset measuring methods and integrated conversion tables for many applications. The FillingCheckTM function automatically detects filling errors and gas bubbles in the sample to avoid measuring errors.

Accuracy, density:
0.0001 g/cm³ (DMA 4100 M)
0.00005 g/cm³ (DMA 4500 M)
0.000005 g/cm³ (DMA 5000 M)

Repeatability s.d., density:
0.00005 g/cm³ (DMA 4100 M)
0.00001 g/cm³ (DMA 4500 M)
0.000001 g/cm³ (DMA 5000 M)

Benefits of DMA Generation M at Crude oil storage

Crude oil varies greatly in appearance depending on its composition. Sulfur content and API gravity are characteristic for a crude oil’s origin. API gravity ranges from approx. 20 (heavy) to almost 50 (light).

DMA 4100 M, DMA 4500 M and DMA 5000 M can directly measure API gravity (calculated from true density), a necessary parameter for quality control of incoming goods (crude oil). The conversion from density to API gravity is implemented according to ASTM D1250 (product group A: crude oil).  A sample changer is used for high sample throughput (Xsample 452) and allows for highly repeatable results (Xsample 352/452). A heated sample changer (Xsample 352/452 H) melts samples prior to a measurement to reduce their viscosity; these samples are sometimes even solid at room temperature but become very easy to handle at elevated temperatures of up to 80 °C. Thanks to API calculations, results from higher measuring temperatures are easily converted to reference temperatures (15 °C, 20 °C, 29.5 °C or 60 °F).

DMA 500

DMA 500 is a convenient, compact laboratory density meter providing renowned DMA measurement quality at the push of a button. Operations with DMA 500 are safe against voltage fluctuations and power outages due to the instrument’s integrated rechargeable battery, which also enables flexible off-the-line operation. The U-ViewTM live camera image of the measuring cell allows for visual inspection of the filling process and is supported by an automatic FillingCheckTM resulting in a high level user-support.

Accuracy, density:
0.001 g/cm3

Repeatability s.d., density:
0.0002 g/cm3

Min. sample volume:
approx. 1 mL

Maximum off-the-line operation:
2 h (optionally 6 h)

Benefits of DMA 500 at Crude oil storage

Whether directly at the oil platform, in the refinery or somewhere in between: The compact DMA 500 density meter measures the API density, API gravity or API SG of crude oil (product group A) compensated to the preferred reference temperature. For convenient cleaning, the cleaning liquid can be automatically pumped through the system using an optional peristaltic pump.