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Development and metrological characterisation of the new LNE 500 N · m deadweight torque standard machine
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This paper describes the development and metrological characterisation of the new LNE 500 N · m deadweight torque standard machine. This machine is integrated into the LNE 5 kN · m deadweight torque standard machine. New masses and a mass change platform have been developed and added to the 5 kN · m machine. After this, LNE realised the metrological characterisation of the 500 N · m machine. The determination of the uncertainties of this torque standard machine and the comparison measurements with the LNE 50 N · m deadweight torque standard machine and with CEM, the National Metrology Institute of Spain, are described in this paper. The results show that the estimated uncertainties are satisfactory because they are a factor of about four times smaller than those of the old standard machines.
Title: Development and metrological characterisation of the new LNE 500 N · m deadweight torque standard machine
Description:
This paper describes the development and metrological characterisation of the new LNE 500 N · m deadweight torque standard machine.
This machine is integrated into the LNE 5 kN · m deadweight torque standard machine.
New masses and a mass change platform have been developed and added to the 5 kN · m machine.
After this, LNE realised the metrological characterisation of the 500 N · m machine.
The determination of the uncertainties of this torque standard machine and the comparison measurements with the LNE 50 N · m deadweight torque standard machine and with CEM, the National Metrology Institute of Spain, are described in this paper.
The results show that the estimated uncertainties are satisfactory because they are a factor of about four times smaller than those of the old standard machines.
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