Title: Chlorine dioxide analyzer

Abstract: A system adapted to continuously and accurately measure the concentration of chlorine dioxide dissolved in liquid, the system including a sensor immersible in the liquid being tested. The sensor is constituted by a noble-metal measuring electrode, an oxidizable-metal counter electrode and an electrolyte which together define an electrochemical cell whose output current depends on the amount of chlorine dioxide passing into the cell through a diffusion membrane permeable to chlorine dioxide but not to the liquid. The chlorine dioxide within the cell is electrochemically reduced at the surface of the measuring electrode to generate a current proportional to its concentration, the counter-electrode being oxidized to complete the cell reaction.

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Inventors: Stevenson, Jr., Roberts G. (New Britain, PA, US)

Application Number: 883284
Filing Date: 1978-03-03
Publication_date: 1979-11-27
Assignee: Fischer & Porter Co. (Warminster, PA)
Primary Class(es): 204/415 204/408
Other Classes:
US Patent Ref:

3235477	Feb, 1966	Keyser et al.	204/195.
3528403	Sep, 1970	Imredy	204/195.
3794575	Feb, 1974	Niedrach et al.	204/195.
3839178	Oct, 1974	Macur	204/195.
3948746	Apr, 1976	Poole	204/195.

Other Refs:
Primary Examiner: Tung, T.
Assistant Examiner:
Attorney: Ebert; Michael