Deflated tyre detector (DRFT)

Détecteur pneu dégonflé (DRFT)

This sensor detects, identifies and warns of the presence of a deflated tyre.




  • On the track: 3 iron wheel sensors designed for tyre trains
  • In the technical room: 1 concentrator, 1 electronic box




  • Integration in a control cabinet and standard fixings
  • 800x200mm cabinet space
  • Distance to outdoor and indoor equipment up to 100m

Download the data sheet (French only)




  • The three iron wheel sensors and the concentrator allow the exact position of the deflated tyre to be known
  • The iron wheel sensor is adjustable in all three axes to suit the application
  • Interfacing to the customer system is done by relay
  • SD card storage of all activities occurring in the system: date and time of each train passage, presence and position of a deflated tyre, system error
  • Possible storage of 250,000 passages with a 128 MBytes card
  • Detection of a train running at up to 250 km/h (in its standard configuration)
  • No additional electrical or mechanical adjustments are required after installation
  • The autonomous system does not require any external handling or control


Options also available on request


  • Detection of the presence of pairs of rubbers by adding dedicated equipment (max speed: 100km/h)
  • Detection of dragging parts under the train by adding dedicated equipment
  • Checking the status of each pair of wipers
  • Control and diagnosis via Ethernet


Technical specifications


Outdoor equipment


  • Power supply via the concentrator
  • SIL4
  • Operating temperature range : -40°C to +80°C
  • Maximum humidity: 100%.
  • Immersion and solids protection rating: IP68 (enclosure) and IP65 (connector)
  • Minimum iron wheel diameter: 300mm
  • UIC510-2 compatible wheel flange height
  • Universal sensor mounting for rail types S45…UIC60 (other profiles on request)
  • No rail drilling required
  • Mechanical protection of sensors
  • Protection against lightning strikes


Interior equipment




  • Supply voltage range 13V…40V (24V nominal)
  • Power consumption 24W
  • Operating temperature range : -30°C to +70°C
  • Wheel detection up to 250km/h
  • Galvanic isolation between internal electronics and power supply and external equipment
  • Dimensions 304x134x216 mm
  • Can be integrated into a 19″ rack


Processing unit


  • 220VAC power supply
  • Power consumption: 40W
  • Operating temperature range : -30°C to +70°C
  • Galvanic isolation between internal electronics and external power supply and equipment
  • Interfacing by relay
  • Dimensions 280x170x90 mm
  • Mounting by nut/bolt or screw/pin
  • Electromagnetic compatibility
  • Overvoltage protection
  • Network communication via TCP/IP possibleIP67 enclosure protection possible
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