Title :
An automated low-solids flux concentration analyzer
Author :
Brownell, Paul V. ; Lindig, Darin D.
Author_Institution :
Compaq Comput. Corp., Houston, TX, USA
Abstract :
A flux concentration analyzer system based on an ultraviolet photometer is described. It is used successfully online in a foam fluxer during assembly of printed circuit boards. The system provides solvent regulation for low-solids fluxes with greater precision than control mechanisms based on measurements of the specific gravity ratio
Keywords :
chemical variables measurement; computerised instrumentation; computerised monitoring; environmental factors; printed circuit manufacture; process control; spectrochemical analysis; spectrophotometers; ultraviolet detectors; wave soldering; Miller integrator; assembly; automated; continuous monitoring; flow injection analysis; flux concentration control; foam fluxer; low-solids flux concentration analyzer; no-clean flux; printed circuit boards; solvent regulation; ultraviolet photometer; wave fluxer; Circuits; Control systems; Detectors; Feedback; Gravity; Reservoirs; Solenoids; Solvents; Valves; Voltage;
Conference_Titel :
Electronic Manufacturing Technology Symposium, 1993, Fifteenth IEEE/CHMT International
Conference_Location :
Santa Clara, CA
Print_ISBN :
0-7803-1424-7
DOI :
10.1109/IEMT.1993.398209
