S 551 Portable


S 551 Portable data logger

The ideal data logger for energy anlyzes (ISO 50001) and air audit (ISO 11011)


Measurement setup for a data logging on the supply side

Product features


  • Connectable sensors for all required measurement tasks (air  flow, air consumption, power consumption, pressure, temperature and many more)
  • Up to 24 inputs through extension boxes and Modbus
  • Several loggers can be combined: no need to have long cables  from the sensor to the logger
  • Third party sensors can be easily connected


  • Power glitches and cuts won‘t effect the performance: battery backup power


  • S 551 does the job on the site
  • Data analyzes in the office
  • Price worthy solution
  • Full software package includes:
    – S4m-S for basic analyzes
    – CAA for compressed air audit analyzes

Easy to use

  • Just connect the sensor and start the recording, no configuration and programming required
  • Easy operation through color-touch display