The wheel detector UTR / ITR is based on detection of railway wheels by the wheel sensor ZK24-2, transmission of wheel pulses over the transmission line, and interfacing to the safety relay contact outputs or optocouplers in the interface module UTR245 / ITR245.
The device is applied for switching-on (wheel detector UTR), and switching-off (wheel detector ITR) the level crossing system (LC), as well as within any other signalling system that requires punctual detection of train. Wheel detector UTR consists of wheel sensor ZK24-2 and interface module UTR245, and lightning protection modules ZGK and ZUT. Wheel detector ITR consists of the same wheel sensor ZK24-2 and interface module ITR245, and the same lightning protection modules ZGK and ZUT.
|Interface module UTR245||Wheel sensor ZK24-2|
The most common application of the train detection system UTR / ITR is detection of train within the level crossing protection system (LC). Wheel detectors UTR / ITR are also used as a replacement of old magnetic or mechanical switch-on/off wheel detectors for level crossing, that act as a closed/open relay contacts to the LC system. Except the level crossing, the module UTR245 / ITR245 can be used as an interface of wheel sensor ZK24-2 to any other signalling system that requires punctual detection of train.
Regarding the train movement direction dependent optocoupler outputs DHL and DLH the wheel detectors UTR / ITR can also be applied for announcement of incoming train to the station, i.e. warning of the operator that the train is moving in direction towards the station on certain distance from the station.
Interface modules UTR245 / ITR245 with lightning protection modules in the level crossing house
RAILWHEEL SENSOR ZK24-2
INTERFACE MODULE UTR245 / ITR245