The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 12, 1978
Filed:
Jan. 30, 1975
James J Morrow, Norristown, PA (US);
Fischer & Porter Co., Warminster, PA (US);
Abstract
A continuous analyzer for accurately measuring the free chlorine residual in a chlorinated water supply having an ammonia content which gives rise to a combined chlorine residual whose bactericidal effectiveness is poor as compared to free chlorine. The analyzer includes an amperometric cell through which a sample from the supply is conducted, the cell being provided with a measuring electrode and a counter electrode. Connected in series with the electrodes is an external voltage source whose level is set to impress a potential on the measuring electrode at which the current flow in the cell as a result of the chlorine content of the sample increases progressively in accordance with the concentration of free chlorine residual, the cell being essentially insensitive to combined chlorine residual.