Transducers

Frauscher RSR110

The Frauscher RSR110 is a relative newcomer to the world of defect detectors, having become an option with Southern Technologies' SmartScan NG². These are true zero speed transducers, whereas other transducers have a minimum train speed (usually 5-7 MPH) to ensure an accurate axle count. They are also better at handling electromagnetic interference from traction motors and environmental extremes.

The Frasucher RSR110 transducers are inductive devices that utilize an electromagnetic field to detect the presence of wheels. All the other transducers listed here are of the magnetic type, which use a magnetic field to sense a wheel.

Nick Wilson

Progress Rail Advanced Universal Wheel Sensor

The successor to the Servo/GE TRIP & TRIP-L transducers, the Advanced Universal Wheel Sensor rejects AC locomotive electromagnetic interference, works in electrified territory, and works at train speeds as slow as 5 MPH.

While similar in appearance to the Trip/Trip-L transducer, note that the Trip/Trip-L has a lip under the ball of the rail while the Advanced Universal Wheel Sensor remains completely flat.

Nick Wilson

Servo/GE Trip

The original magnetic transducer, stemming from the Servo days as the 'SERVOTRIP' transducer. The Trip-L transducer was also available for use in electrified territory where electromagnetic interference was a major issue.

The Trip/Trip-L would be superseded by the Advanced Universal Wheel Sensor.

Spencer Harman

Southern Technologies Model 2100

The standard Southern Technologies magnetic transducer in use since the days of the SmartScan NG.

Nick Wilson

Southern Technologies Sentry

The original transducer introduced with the Sentry 2058.

Nick Wilson