The rear unit consists of a microprocessor, radio modem, radio, pressure transducer, side mounting style clamp and an integral antenna. The Pressure transducer can measure both air brake pressure and vacuum. If the air-pressure changes more than 10Kpa or the vacuum changes more than 5 Kpa, a message is immediately sent to the cab unit every time it changes. If the pressure or vacuum is stable, the cab unit's display is updated every 60 seconds. The cab and rear units operate as a matched pair. Each of the pair units is coded with an ID number. A cab unit will only decode a message from his corresponding rear unit.
All the Telemeters operate on a single frequency. The rear unit can also be fitted with a second short range digital receiver. This receiver can receive messages from track-side equipment and has a range of 50 to 100 meters. This allows for interfacing to low cost track side equipment like dragging equipment detectors and section-clear signals.
The InTeleTrack Telemeter system is designed to be a simple, rugged and reliable system. The clamp on the rear unit can fit on all the known types of buffers in Southern Africa and can be changed to fit other types of buffers.
Maintenance is done by changing modules. All components are readily available from local suppliers.
-Rugged Proven design
-Very long operating time on single battery charge
-Detects possible brake system problems
-Monitors for train completeness using pressure or vacuum and radio message time-outs.
-Optional Checking for dragging equipment or wheels
-Prevents track damage due to de-railing with DED
-Radio: 5 Watt VHF. UHF optional.
-Pressure: -90 Kpa to 995 Kpa in steps of 5 Kpa.
-Channels: Up to 9999 Telemeters can operate on a single radio channel.
-Display: 16 Digit Alpha-Numeric with LED backlighting.
-Weight: 8.1 Kg. Operating time on single charge:60 Hours minimum
- Emergency Brake function.
- Wide range of operational frequencies.
- Optional display on rear unit to see pressure & battery voltage.
- Clamp customized to user requirements.