PLATFORM POSITION MONITORING FOR TANK CAR WASH SYSTEM COUNTRY: GERMANY 1 / 3 P P L L I I C C A A T T I I O O N N R R E E P P O O R R T T THE TASK When cleaning tank cars in a car wash, a folding bridge is automatically lowered pneu- matically to serve as a fall protection for personnel. The pistons of the two 5/2-way pneumatic cylinders are indexed in and out using com- pressed air. A leakage in the system would result in the

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