作者: Thomas Pfauch , Ingrid Wunderlich
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摘要: A retractable assembly for a sensor, which determines physical and/or chemical, process variable in medium. The has housing, tubular holder accommodating the sensor is arranged such that it can be moved linearly by drive unit. At least one cascaded cylinder provided linear shifting of holder, wherein comprises at two cylinders after other direction stroke movement. Furthermore, is, or are, embodied operable manner movable into different positions.