NBN EN ISO 15212-1 : 1999 COR 2009

1 Scope
2 Normative references
3 Definitions
4 Principles and functional units
    4.1 Measuring principle
    4.2 Functional units
5 Density sensor
    5.1 Sensor
    5.2 Sensor design
6 Requirements and tests
    6.1 Oscillation system
    6.2 Temperature control and measurement
    6.3 Displays
    6.4 Auxiliary units and data transfer
    6.5 Safety requirements
    6.6 Electromagnetic compatibility
7 Adjustment
8 Calibration
    8.1 Density reference liquids
    8.2 Particular density reference liquids
    8.3 Calibration requirements
    8.4 Calibration procedure
9 Density meter accuracy
10 Manual
11 Marking
Appendix A (normative) Density and compressibility of pure
water
Annex B (normative) Density of moist air
Annex C (informative) Bibliography

Defines metrological and other requirements for oscillation-type density meters used in laboratories for all types of homogeneous fluid samples. Additionally, a procedure for adjusting and calibrating laboratory instruments is provided. These instruments are either stand-alone units or form part of more complex measuring equipment which supplies additional test parameters of the sample. Does not cover the procedure for using the density meters for especial applications or products, eg petroleum products or beverages, nor does it specify a particular instrument.