A pharyngometer or similar wavetube-based apparatus which includes a wavetube which is detachable from the electronic platform. As the wavetube includes no electronic components, the wavetube can be sterilized thermally or chemically between patients without damaging the electronics of the electronic platform. The wavetube is attached to the electronic platform by a tab in the electronic platform which fits into a lateral groove within the wavetube. Similarly, a threaded member in the electronic platform engages a threaded aperture in the wavetube.