Air System Expert


The LINK Air System Expert is a complete, portable, computer-based system that makes it easy to verify FMVSS/CMVSS 121 air system compliance. A precision accelerometer is used to indicate first pedal movement. A laptop computer, pressure transducers, digital gage, and a rugged travel case are included.


Key Benefits

  • Measures leak down
  • Performs pressure balance
  • Data acquisition mode diagnoses the air system
  • ABS system diagnostics (optional)
  • Light function (optional)


  • Air-braked vehicles
  • Service brake apply and release
  • Park brake apply
  • Compressor build up, cut-in and cut-out
  • Pressure differential
  • Brake light switch activation


Number Channels
2 to 12
Pressure Transducer
0 bar to 34 bar, + 0.25 %, -40 °C to 125 °C
Data Acquisition
USB 2, 300 samples/sec
Digital Gage
0 bar to 345 bar, + 0.25 %, -40 °C to 60 °C




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