Title :
Continuous non-contact measurement of electric charges of solid particles in pipes of pneumatic transport. II. Measuring system and its application
Author :
Gajewski, Juliusz B. ; Glód, Bogumil ; Grobelny, Ryszard A. ; Kala, Wieslaw
Author_Institution :
Tech. Univ. of Wroclaw, Poland
Abstract :
For pt.I see ibid., vol.2, p.1958-63, 1989. A measuring system that enables the electric charges of solid particles in a pneumatic-transport pipe to be conveniently, precisely, reliably, and quickly measured is described. The system is made up of a measuring head comprising a sensing element (metal inductive ring probe), a parallel-to-input capacitor of a high capacitance value, and a preamplifier; an electrostatic computer adapter; and a computer. The system is controlled under laboratory conditions in two ways; using the standard charges in a specially designed, built, and tested stand for calibrating measuring heads and devices, and mounting a measuring head in a laboratory-sale pneumatic installation. The system makes it possible to measure electric charges and the average (over the cross section of a pipe) flow velocity of charged particles at the same time.<>
Keywords :
charge measurement; computerised instrumentation; electrostatics; microcomputer applications; computerised instrumentation; electric charge measurement; electrostatic computer adapter; flow velocity; measuring system; metal inductive ring probe; parallel-to-input capacitor; pipe flow; pneumatic-transport pipe; preamplifier; Capacitance measurement; Capacitors; Concurrent computing; Current measurement; Electric variables measurement; Electrostatic measurements; Laboratories; Particle measurements; Probes; Solids;
Conference_Titel :
Industry Applications Society Annual Meeting, 1989., Conference Record of the 1989 IEEE
Conference_Location :
San Diego, CA, USA
DOI :
10.1109/IAS.1989.96909
