The Automated Air-Sampler: Sherpa 70 Automated Portable Sampling Unit (APSU)

This system automatically purges the flasks, dries the air sample, and fills the flasks to a pre-determined pressure without constant operator supervision.


Used in NOAA Carbon Cycle Greenhouse Gas (CCGG) cooperative air sampling network for ground-based flask pair sampling to collect samples for analysis of CO2, CH4, N2O, CO, H2, and fifty (50) other gas and isotope species.


  • Rechargeable NiMH battery.
  • Air compressor pump with nitrile diaphragm.
  • Pressure regulator.
  • Pressure and voltage gauges.
  • 2.5 L glass flasks.
  • 5.4 m ambient air sampling mast folds into suitcase.
  • Electronic controller with status lamps.
  • Optional Thermoelectric-cooled TEC) air-sample drier.
  • Motorized valves to automate flushing and sampling modes.
  • Microprocessor controlled.
  • AC power adaptor supplied (120 VAC or 240 VAC).
  • Carrying case and shoulder strap.


  • 20 x 22.5 x 7.5” (51 x 57 x 19 cm)
  • 28 lbs. (12 kg)

PRICE: Price/Quote available upon request.

Sherpa Model 70 Air Sampling Unit

Choose automated, ambient air monitors and measurement equipment designed by HPD for your environmental studies. They’re portable, easy to use and their light weight makes it easily accessible in the field.

Speak with our sales engineer for more information...

High Precision Devices, Inc.
4601 Nautilus Ct S Boulder, CO 80301 USA
Phone: +1-303-447-2558 Email: