Email Document Reference

Enter your email address below and the reference for this document will be sent to shortly from webmaster@ceesi.com.

Title: Flowmeter Manufacture: Some Observations On Variation And Robustness
Author: Roger C Baker And Michael J Gregory
Source: 2002 International Symposium on Fluid Flow Measurement
Year Published: 2002
Abstract: The quality of an instrument, and thus its ultimate accuracy will be affected by the nature of the manufacturing process. In this paper, which provides a progress report, we review reported work on variation in flowmeter manufacture, and we look at cases where small variation appears to be possible in the production process. The concept of robustness is that the design reduces the effect of variation in manufacture and application. Much work has been done over the past 20 years or more to identify the effect of application. In this context we look at the implications of some of the work. In developing an instrument it is important to avoid embedded items that cannot be fully tested until the instrument is complete, and may, at that stage, call for the finished product to be rejected. It is, therefore, important to estimate the impact of product tolerances on the performance of the instrument. Calibration is a major part of the manufacturing process, and reducing the time and cost should reduce the meter cost. Design changes may reduce the need for calibration. Changed manufacturing tolerances, alternative calibration techniques, or digital signal processing, may offer alternatives. The manufacturing process will be influenced by the tendency for software to replace hardware in new instrument design, which may, in turn, allow simplification of the components, and tuning out of variation. Manufacturers use of CD-ROMs as part of the communication with the customer may give way to e-mail links for feedback on products. In conclusion we comment on the implications for quality following from the control of variation.

In order to prevent spam and automated file downloads for documents within the Measurement Library, please follow the instructions below and then you will be able to email a reference to this article.