pH sensors

The Orbisint CPS11D and the Orbipore CPS91D pH electrodes combine the advantage of having a contaminant-resistant reference, with fast response time and high reproducibility.

Utilising ‘ion exchange’ technology, Endress+Hauser has placed the ion trap in the electrodes’ reference system guarding the silver chloride wire. The ‘ion exchange trap’ intercepts contaminating ions and allows the electrical signal to pass between the chambers without contamination.

The design offers customers a faster and more accurate measurement alternative to pH electrodes with wood diaphragms — in the presence of reference contaminants and high solids content present in paper and pulp, slurries, chemical and mineral leaching applications.

Having been proved in long-term tests, both models of electrode are available with Memosens technology, whereby the signals are transmitted digitally. Memosens sensors not only store information calibration data, but also process the data and can provide the information to outline a full maintenance regime.

The storage of the calibration data in the sensor means that the electrodes can be cleaned, conditioned and calibrated under optimum laboratory conditions, thereby reducing maintenance time and costs and improving longevity.