Case study of the electrical hardware and software for a flowmeter calibration facility

摘要

In the development of a flow test rig as a tool for investigating manufacturing variation and providing guidance to manufacturers considering setting up such a rig for calibration of meters at the end of the production line, we encountered various problems. We discussed some of these in a previous paper in Baker et al. (2006) [1]. In a subsequent paper in Shimada et al. (2010) [2] we reported on tests aimed at identifying the limits of measurement trueness of the rig and the obtainable precision (VIM (1993); Amended 1995 Supplements (1993) [3,4]) with this type of design. In this paper we discuss the aims for signal measurement and the design, implementation of hardware and software, and the commissioning of the system. In particular, we have set out in some detail the problems encountered which we suspect are experienced by others, and the solutions found which appear to be justified by their application to a rebuilt rig with satisfactory performance.