Model ACS3920

CO2 Free Dry Air Compressor System

A Fully Enclosed Compressed Air Supply, Air Dryer & Sound Muffling Enclosure

The ACS3920 Air Compressor System with integral CO2 Adsorber/Air Dryer provides a clean, dry, continuous duty gas supply for the Thunder Scientific Low Humidity Generators. The ACS3920 Air Compressor System consists of a vibration isolated 3/4 HP oil-less compressor, membrane air dryer, CO2 Adsorber/Air Dryer, and adjustment regulators, all incorporated into a sound muffling enclosure. The ACS3920 is ideal for laboratory use due to its small size, 100 psiG pressure output at 10 L/min, with an ambient pressure -70 °C FP, 100% duty cycle capability, and a low sound level of less than 70 decibels.

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Model ACS3920 Air Compressor System


 NOTE: When using the ACS3920 with a Model 3920 or Model 3900 Low Humidity Generator the working range of the generator will be limited by the lower pressure and overall dryness outputted by the ACS3920. You will only be able to generate down to around a -70 °C frost point when using the ACS3920. It is also important to adjust the internal Model 3920 or Model 3900 regulator to 80 to 90 psiG to assure proper pressure control.


  • 100 psiG Oil-Less Air Supply
  • CO2 Free Dry Air
  • -70 °C Ambient Pressure Frost Point
  • Membrane Air Dryer
  • CO2 Adsorber/Air Dryer
  • Sound level <70 db
  • Vibration Isolated Compressor
  • 8’ Removable AC Power Cord
  • Remote Start Function
  • Hour Meter
  • Dimensions H 14.0” x W 28.9” x D 18.1”
  • Weight Approximately 75 Lbs.
  • Connection Supply Tubing & Fittings
  • Rolling/Locking casters (Optional)

Product Accessories & Parts

These are the accessories & parts available for the Model ACS3920.

When ordering a new air compressor system, part number ACS3920, you will receive a five foot air supply line with fittings, a removable AC power cord, plus an ACS remote cable assembly, and the enclosure with air compressor and dryer. If you already have a Model 3920 low humidity generator, and you only need to order the air compressor system, here are the ordering part numbers. Use this part number for the 115 volts at 50/60Hz system, ACS3920-115, or if you need to order a high voltage air system, specify part this number ACS3920-230 for the 230 volts at 50/60Hz system.

Thunder Scientific does offer repair services for any of our compressor systems, just ask for a quote.

Weights & Measures

This table shows the container dimensions and shipping weight.
ACS3920 Air System37" x 24" x 23" (94 x 61 x 58 cm)165 lbs. (74.8 kg)

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