Counting heads of the ACS2000 come in two different types of wheel sensors with the appropriate evaluation interface board according to requirements. Wheel sensor RSR122 comprises two independent sensor systems, which detect the wheel flange of the train wheel. The operating principle of the wheel sensor system is based on the loss of energy in an electromagnetic alternating field when damped by metal. Because the wheel sensor does not suffer any interference from the cadenced linear eddy current brake it is specially suitable for lines, where vehicles with this type of brake are in operation. Wheel sensor RSR180 comprises two sensor systems that are placed lengthways in the rail, at a distance of 180 mm between them. The sensor operation is based on the principle of field line deflection. Because of the position tolerant mounting and the lack of any electrical adjustment at the rail, the RSR180 is the preferred choice for all common applications.
Typical characteristics of both wheel sensors: - Quick and precise mounting at the inside face of the rail on a rail claw
- Complete absence of any other electronic components in the proximity of the rail
- No further maintenance needs in this dangerous and frequently time consuming work area of the track except for an annual checks
- Mountable onto the web of the rail; this however, requires the drilling of precise holes
- Equipped with a fixed moulded four-wire cable set, to be connected in the trackside connection box via terminal to the main signalling cable
- Wheel sensors comply with protection class IP 67, trackside connection box with IP65
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