GfG Respiratory Air Monitoring 4021 AutoCal System

Usually ships in 4 - 6 weeks
  • GFG01-4021--Product_Image_1
  • GFG01-4021--Product_Image_2
$1,875.00 - $3,535.00


GfG Respiratory Air Monitoring 4021 AutoCal System is the unit of choice where specific and accurate measurement of carbon monoxide, oxygen or dew-point levels are required. Our innovative AutoCal system makes calibration and maintenance simple. Additional features include alarm relay contacts, user adjustable alarm points, and low flow alarm indicator. All models may be purchased with or without the 25, 50 and 100 CFM wall mounted filter panels which remove dangerous contaminants from supplied air sources and ensure clean, breathable air. All GfG Instrumentation RAM Instruments satisfy the requirements of OSHA rule 29 CFR 1910.134 (d) (2) (ii) for carbon monoxide monitoring. They will also monitor Grade E air, generally specified for breathing air in cylinders (SCBA). The 4021-DPX is ideal for medical breathing air applications.

Key Features:

  • Continuous carbon monoxide (CO) monitor for compressed air
  • Optional low hydrogen interference CO sensor
  • Robust, easy to operate design
  • Integrated dew point measurement (if specified)
  • AutoCal automatic calibration
  • Available in CE marked models
  • Dryer control relays (DPX model only)
  • Dry contacts for remote horn and lights
  • Internal, case-mounted horn
  • LCD display
  • NEMA 4X housing
  • Monitors: CO, Dew Point, O2


4021 CO Manual: 

4021-1 CO & O2 Manual: 

Part Numbers:
4021 - Carbon Monoxide (CO)
4021-1 - Carbon Monoxide (CO) and Oxygen (O2)
4021-DPX - Carbon Monoxide and Dew Point

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