CO Monitors/Multi-Gas Detectors/Single-Gas Detectors

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CO Monitors – Multi-Gas Detectors – Single-Gas Detectors


Safe Air Systems offers complete CO Monitoring systems. The RAM 4021 AutoCal® series is the unit of choice where specific and accurate measurement of carbon monoxide, oxygen or dew-point levels are required. Designed to meet OSHA requirements for monitoring of Grade D respirable air, this unit is equipped with a reliable electrochemical sensor that accurately indicates the level of carbon monoxide on an illuminated liquid crystal display. Adding versatility, this unit offers optional oxygen or dew point sensors for applications where detection or measurement is needed.


Calibration and maintenance are simple with the AutoCal® system. Additional features including alarm relay contacts, user adjustable alarm point, low flow alarm indicator and many more make this unit an intelligent choice. The RAM 4021 is available in four models, the 4021 (CO), 4021-1 (CO and O2), 4021-DPX (CO and dew point levels) and 4021-PR (CO and additional relay to signal power loss to monitor, complies with newest NFPA regulation). All models may be purchased with or without airline filter systems.



CO Monitors – Multi-Gas Detectors – Single-Gas Detectors


Safe Air Systems offers Multi-Gas Detectors and Single-Gas Monitors.  The G450 series Confined Space Gas Detector continuously measures up to four gas hazards (CO, H2S, O2, and percent LEL combustible gas) in air.  The G460 series continuously measures up to 6 gas hazards (some examples are: CO, H2S, O2, LEL, NH3, SO2, HCN, etc.). The G460 also offers PID (photoionization detectors) for the measure of volatile organic chemical (VOC) hazards and infrared (NDIR) sensors for the direct measurement of CO2 and combustibles.


  • Water resistant design
  • Full 3 year warranty on all sensors
  • Easy Operation
  • Up to 24 hours continuous operation
  • Bright, flashing LED alarm lights visible from 360°
  • Top-mounted display easy to read even in the dark
  • Motorized sampling pump
  • Datalogging is standard


The Micro IV – Single-Gas Monitor has a wide range of sensors included O2, H2S, CO, NH3, SO2, CL2, CLO2, PH3, NO2, HCN, HCl, ETO, HF, O3, NO, H2 and more!


  • Water resistant design
  • Highly configurable smart sensor design
  • Full 3-year warranty on O2, CO and H2S sensors
  • Optional sample draw pump
  • Large display with real-time readout
  • Event / Datalogging standard
  • Programmable ceiling (3), STEL & TWA alarms
  • Vibrating Alarm standard
  • AutoCal® automatic calibration
  • Optional docking station

GfG RAM 4021 CO Monitor

GfG G460 Spec Sheet
GfG G450 Spec Sheet
GfG Micro IV Spec Sheet


Please contact us for our full line of GfG Gas Detection products.