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.
Pepperl+Fuchs is a leading developer and manufacturer of electronic sensors and components for the global automation market. Continuous innovation, enduring quality, and steady growth have been the foundation of our success for more than 70 years. Pepperl+Fuchs employs 6,000 people worldwide and has manufacturing facilities in Germany, USA, Singapore, Hungary, Indonesia and Vietnam, most of them ISO 9001 certified.