For equipment where, due to cost or installation-space constraints, it is not feasible to install a piston‑type accumulator (servo cylinder) level‑monitoring device, when operating conditions require monitoring the energy stored in the accumulator (or the system), or when maintenance and servicing necessitate detecting the piston position within the piston‑type accumulator to measure the fluid level, an ultrasonic position‑sensing device manufactured and supplied by SCHWERLL can be employed. This device enables precise measurement of the piston‑side fluid level without disrupting the equipment’s operational status; the sensing is performed through a metal housing, with the metal wall thickness tolerating up to 35 mm on a single side.
