Proposed approach for force transducers classification | International Journal of Metrology and Quality Engineering (IJMQE)

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Table 5

Boundaries for force proving instruments for ISO 376 compared with the new proposed approaches.

Class	Classifications criterion based on ISO 376:2011							Proposed Classifications criterion

	Relative error of the force-proving instrument (%)							Expanded uncertainty of the force proving instruments calibration (95% level of confidence)

	R	R^′	i_c	z₀	v	c	U_ref (for Deadweights)	±%
0.0	0.050	0.025	0.025	±0.012	0.070	0.025	±0.010	0.050
0.5	0.100	0.050	0.050	±0.025	0.150	0,050	±0.020	0.100
1.0	0.200	0.100	0.100	±0.050	0.300	0.100	±0.050	0.250
2.0	0.400	0.200	0.200	±0.100	0.500	0.200	±0.100	0.500

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