Bayliss, D J; Downes, S P (2003) An evaluation of a Paar 5000 density meter. NPL Report. MATC(A)139

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Abstract

NPL have recently acquired a Paar DMA 5000 vibrating cell density meter to replace the Paar DMA 55 which has been in use since 1993. The manufacturer’s specification claims a higher accuracy and better repeatability for the new meter and, in addition, it has the capability to automatically correct for viscosity related errors. NPL has assessed this instrument over a density range of 1 kg m -3 to 1650 kg m -3 , a dynamic viscosity range of 1 mPa s to 600 mPa s and a temperature range of 10 °C to 50 °C. Within these parameters it was established that the instrument could, by using equations derived from multiple regression analysis of the test data, measure the density of an unknown liquid with an uncertainty of better than ± 0.05 kg m -3 . This compares with a measurement uncertainty of ± 0.1 kg m -3 when using the Paar DMA 55 over a similar measurement range.

Item Type:	Report/Guide (NPL Report)
NPL Report No.:	MATC(A)139
Subjects:	Engineering Measurements Engineering Measurements > Mass, Force, Pressure
Last Modified:	02 Feb 2018 13:16
URI:	http://eprintspublications.npl.co.uk/id/eprint/2603

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