摘要 |
<p>An adjustable insertion assembly for an electrochemical sensor includes an electrode holder to receive the sensor, having a distal aperture to permit process fluid to contact the sensor. A receptacle slidably receives the holder, for a sliding range of motion extending from inserted to retracted positions. An open distal end portion of the receptacle extends through a wall of a process fluid vessel, so that the aperture is open to the process fluid when inserted, and closed when retracted. A leverage member is releasably movable relative to the receptacle, and moves with a captured extension. An abutment of the receptacle engages the extension so that movement of the leverage member in opposite directions alternately clamps and releases the electrode holder relative to the receptacle to substantially prevent and permit movement at substantially any point within the range of movement.</p> |