Instrumentation for Engineering Measurements

Instrumentation and Measurements

Virtual instrumentation for electro–analytical measurements

This paper deals with some applications of Virtual Instrumentation to electroanalytical measurements. Virtual Instruments (VIs) are software programmes that simulate the external appearance and functions of a real instrument on the screen of a computer. In this work, programmes have been developed to control the potential of a working electrode (through a suitable potentiostat), acquire the cur...

Methods and Instrumentation for Bunch Shape Measurements

Bunch shape is one of the most important and interesting characteristics of a beam in ion linear accelerators. Recently detectors of bunch shape with a transverse scanning of low energy secondary electrons found application in several accelerators. The principle of operation of the detectors is based on a coherent transformation of a longitudinal structure of a beam under study into a transvers...

A Novel Instrumentation Circuit for Electrochemical Measurements

In this paper, a novel signal processing circuit which can be used for the measurement of H(+) ion and urea concentration is presented. A potentiometric method is used to detect the concentrations of H(+) ions and urea by using H(+) ion-selective electrodes and urea electrodes, respectively. The experimental data shows that this measuring structure has a linear pH response for the concentration...

Invasiveness of Performance Instrumentation Measurements on Mulitprocessors

Performance is a critical issue in order to justify the use of parallel computers. Since it is usually a difficult task to write an application that successfully exploits the target parallel architecture, many tools like Pablo, ParaGraph, PA-Tools, Express, TOPSYS and ANDES have been developed. These tools use different software, hardware or hybrid mechanisms to record events of interest relate...