Work

Calibration of high-capacity scales using hydraulics instead of weights: Metrological traceability and measurement uncertainty

Year: 2024

Type: article

Abstract: The calibration of non-automatic weighing instruments with a capacity of several tons, such as processing tanks, requires significant efforts and poses safety risks to calibration technicians. In response to these challenges, METTLER TOLEDO has developed a calibration method utilizing hydraulic actuators and force measurements, which has achieved ISO 17025 accreditation in several countries. This article outlines how hydraulic calibration can be aligned with traditional calibration standards, such as EURAMET Calibration Guide 18, and how traceability to the SI unit of mass can be ensured. An approach for calculating measurement uncertainty at calibration is discussed. Calibration results demonstrate high agreement between traditional calibration with test weights and the new hydraulic force calibration.

Source: Measurement Sensors

DOI: 10.1016/j.measen.2024.101355

Authors: Daniel Eisenbarth, Helmut Schunn, Christian Müller-Schöll, Klaus Fritsch, Ferenc Murányi

Institution: Mettler-Toledo (Switzerland)

Language: English

Topic: Scientific Measurement and Uncertainty Evaluation

Subfield: Statistics, Probability and Uncertainty

Field: Decision Sciences

Domain: Social Sciences

Open Access status: gold

Estimated APC paid: $1,800

Funder: Mettler-Toledo