Process for sensing at least one parameter in water

摘要

Apparatus (2) for sensing at least one parameter in water, which apparatus (2) comprises: (i) a dissolved oxygen sensor (4) for sensing dissolved oxygen in the water; and which apparatus (2) is such that: (ii) the dissolved oxygen sensor (4) has a working electrode and a reference electrode; and (iii) a voltage signal is applied between the working electrode and the reference electrode, and the voltage signal provides a conditioning waveform, then a wait time, and then a measurement function.

主权项

1. A process for sensing at least one parameter in water, which process comprises:
providing in the water apparatus comprising a dissolved oxygen sensor which is for sensing dissolved oxygen in the water and which has a working electrode and a reference electrode; and (ii) applying a voltage signal between the working electrode and the reference electrode, and such that the voltage signal provides a conditioning waveform, then a wait time that returns a perturbed local oxygen concentration at the working electrode to a bulk oxygen concentration value, and then a measurement function that is sufficiently short that the extent of a depleted oxygen zone at the working electrode is minimised, and hence sensitivity to flow is minimised.