Amperometric Sensor System

摘要

A sensor system that measures at least one parameter of water includes an electronics subsystem and includes a sensor housing electrically and mechanically coupled to the electronics subsystem. The sensor housing encloses a chamber that receives water via at least one inlet and that releases water via at least one outlet. At least one sensor has at least one electrode exposed to water in the chamber. A flow generator causes water to flow through the chamber. A plurality of objects within the chamber move in response to the water flow and abrasively clean the at least one electrode. Preferably, the sensor system includes a chlorine sensor having at least two electrodes. The electronics subsystem applies a first differential voltage between the two electrodes during a measurement interval and then applies a second differential voltage between the two electrodes during an interval following the measurement interval.

主权项

1. A method of operating an amperometric sensor having a plurality of electrodes positioned on the face of a sensor body, each of the plurality of electrodes having a surface exposed to water having at least one parameter to be measured by the plurality of electrodes, the method comprising:
positioning the surfaces of the plurality of electrodes in a cavity that comprises a volume of water; operating a flow generator to flow the water having the at least one parameter to be measured into, through and out of the cavity to cause the water to flow across the surfaces of the plurality of electrodes at a substantially constant velocity; and measuring the at least one parameter of the water while the water is flowing across the surfaces of the plurality of electrodes.