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

fYear

1989

fDate

1-5 Oct. 1989

Firstpage

1964

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 1989., Conference Record of the 1989 IEEE

Conference_Location

San Diego, CA, USA

Type

conf

DOI

10.1109/IAS.1989.96909

Filename

96909