Pneumatic Retractable Sensor Housings

An EXmatic control unit drives a pneumatic actuator that withdraws the sensor into an isolated chamber, rinses and cleans it, runs a calibration, and returns it to the process. It runs on a schedule or on command, with no operator present, which keeps readings accurate on continuous lines.

Pneumatic retraction automates cleaning and calibration on a fixed schedule, so accuracy doesn't depend on an operator remembering to service the sensor. It suits continuous or unattended processes where manual retraction would mean frequent site visits.

An Exner EXmatic control unit. It drives the retraction cycle and runs the rinse, clean and calibration sequence, so the housing operates automatically once the schedule or trigger conditions are set.

Yes, the EXtract pneumatic housings are usable in ATEX areas. For a fully ATEX-rated retractable holder including the drive, see our ATEX retractable sensor holder page and confirm the zone with us before ordering.

The EXtract 830, with EHEDG / 3-A approved stainless steel connections rated up to 16 bar, is built for cleanable mounting in food and beverage lines that need automated, unattended sensor service.

The EXtract pneumatic range accepts 12 mm sensors from 225 mm to 325 mm long, longer than the manual EXtract range, to suit the housing's longer retraction stroke and chamber.