When cleaning tank cars in a car wash, a folding bridge is automatically lowered pneumatically to serve as a fall protection for personnel.
The pistons of the two 5/2-way pneumatic cylinders are indexed in and out using compressed air. A leakage in the system would result in the folding bridge returning to its parking position and thus causing severe physical damage to the wash head of the cleaning system. To prevent this, the position of the platform must be reliably monitored.
The high resolution of 125µm allows for the exact calculation of the folding bridge position. A minimum temperature drift of ± 0.5mm (-25 °C ... 70 °C) guarantees reliable position calculations in almost any environment. Even high humidity or splash water as found in a car wash do not impede the function of the IP67 protected sensor in any way, and the long-term operation of the system is secured.