Requirements for Force Standards Used for Verification of Heavy Scales

Abstract

This article discusses the problem of verification of heavy scales by currently existing methods that involve the use of reference weights and the possibility of expanding the scope of force standards for verification of heavy scales. The essence of the problem is the existence of technological and economic difficulties in the application of these methods of transferring a measurement unit, as well as the incompatibility between the normalized metrological characteristics of mass measuring instruments and force standards.The authors proposed a new method for transferring a measurement unit to heavy scales using force-reproducing hydraulic machines as force standards. Within the research, this method was tested, the requirements for force standards used for verification of heavy scales were formed, and experimental studies were carried out in order to verify the compliance of force standards with these requirements. On the example of hydraulic force-reproducing machines, the compliance of force standards with these requirements was shown.There is described an approach to the metrological support of measurements of large masses using force standards. In view of the relative ease of the method implementation, a new method of transferring a measurement unit based on this approach has the prospect of becoming the most common and accessible method for verification of heavy scales. Therefore, it is advisable to expand the scope of existing 1st category force standards.