Metrological characterization of the new 1MN force standard machine of NPL India

Jain, Shubhendra Kumar; Kumar, Harish; Titus, S. S. K.; Tegtmeier, Falk; Prenzlow, Norbert; Schwind, Daniel

doi:10.1016/j.measurement.2011.09.013

Cited by 8 publications

(2 citation statements)

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“…Chapter 4.3 in the guide describes the uncertainties to be considered. The detailed uncertainty contributions for the FSM of NPL(I) have been previously discussed in detail in [2].…”

Section: Uncertainty Of Lever Forcesmentioning

confidence: 99%

Performance of force standard machines with compensation of lever arm distortion

Kolwinski¹,

Schwind²

2014

ACTA IMEKO

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The demand for lower uncertainties in force measurement is increasing. Deadweight force standard machines are known to yield the lowest measurement uncertainty in force realization. However, their capacities cannot be extended indefinitely as they become too large in size and prohibitively expensive. Lever amplification of a deadweight force is an option for higher capacities in force realization. This paper describes the performance of a force standard machine with a new method (patent pending) for automatic compensation of lever arm distortion in order to keep the amplification ratio constant.

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“…Chapter 4.3 in the guide describes the uncertainties to be considered. The detailed uncertainty contributions for the FSM of NPL(I) have been previously discussed in detail in [2].…”

Section: Uncertainty Of Lever Forcesmentioning

confidence: 99%

Performance of force standard machines with compensation of lever arm distortion

Kolwinski¹,

Schwind²

2014

ACTA IMEKO

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“…Dead-weight type force standard machines (DWMs) use a mass-calibrated deadweight and local gravitational acceleration to provide forces up to 4.4 MN with a calibration and measurement capability (CMC) of 2 × 10 −5 or better (coverage factor of k = 2) [3]. Although several NMIs have introduced MN-class DWMs in recent years [3][4][5][6][7][8], establishing a DWM with a capacity of 500 kN or more requires significant resources. Force standards in this range often involve more complex machines that use smaller deadweights and force amplification via levers and hydraulic piston-cylinders.…”

Section: Introductionmentioning

confidence: 99%

Calibration and measurement capability evaluation for 1 MN hydraulic force standard machine newly installed at NMIJ

Hasegawa,

Hayashi

2024

Eng. Res. Express

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Social safety is predicated on accurately evaluated force standards and a system for force traceability. National Metrology Institute of Japan, the body responsible for managing Japan's national force standards, has implemented a new 1 MN hydraulic force standard machine. In this paper, we assess the calibration and measurement capability of this new force standard machine using five different force measuring instruments. Our findings confirm that its capability is less than 1×10−4 relative, demonstrating its adequate performance as one of the national force standards.

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Physico-Mechanical Metrology

Yadav

Titus

Kumar

et al. 2020

Metrology for Inclusive Growth of India

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Metrological characterization of the new 1MN force standard machine of NPL India

Cited by 8 publications

References 0 publications

Performance of force standard machines with compensation of lever arm distortion

Performance of force standard machines with compensation of lever arm distortion

Calibration and measurement capability evaluation for 1 MN hydraulic force standard machine newly installed at NMIJ

Physico-Mechanical Metrology

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