Magnetic Inductive Flowmeter for Low-Conducting Fluids.

摘要

A literature study on magnetic-inductive flowmeters for low conducting liquids was carried out and a special flowhead for this application has been constructed. The measurement on the primary head have been carried out with an ac-field and with a keyed-dc-field. To get a higher signal to noise ratio a higher field frequency then usual in industrial M.I.-flowmeters was used. The failure curve of a system is highly influenced by the shift of the zero point. Therefore a big effort has been made to diminish the zerodrift of such a system. 31 references, 21 figures, 1 table. (ERA citation 10:001019)