Alicat Whisper: Low Pressure Drop Portable Mass Flow Meter


Default configuration:


Specification Summary:

  • Pressure drop of 0.07 psi with 0.5 SCCM to 5 SLPM units, at full scale flow venting to atmosphere. See tech specs below or contact us for more information.
  • Accuracy: 0.8% of the reading or 0.2% of full scale (0.4% & 0.1% optional high accuracy upgrade).
  • + 0.2% full-scale repeatability (NIST-traceable).
  • Linear range: 0.5-100% of full scale (200:1).
  • Multi-gas calibration: 98-130 gases preloaded, plus COMPOSERTM gas composition firmware.
  • Typical measurement response time constant: 5-10 ms
  • No warm-up time required
  • Battery: rechargeable Li-ion (1880 mAh).
  • Charging over Micro-USB (cable and AC wall adapter included).
  • Lifetime warranty: unaffected by bumps, humidity or changes in orientation.



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