Patent ID: 8291749

Claim:
An immersion probe for water analysis, the immersion probe comprising: at least one electrode configured to detect an analyte in water; a probe head with a probe head end side on which the at least one electrode is disposed; and a separate protective cap attached to the probe head so as to be removable in a distal direction, the separate protective cap including a protective cap end side with an electrode opening and an air discharge nozzle, the air discharge nozzle being configured so as to cause air exiting the air discharge nozzle to sweep over the at least one electrode, wherein the separate protective cap includes an annular air channel and an axial air channel, the axial air channel being configured to conduct air from the annular air channel in the air discharge nozzle, and wherein the annular air channel is formed radially proximally by an outer wall of the probe head and radially distally by the separate protective cap.