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GfG RAM 4021 Respiratory Airline Monitor
GfG RAM 4021 OSHA compliant respiratory air CO monitor for Grade D breathing air

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Base Price: $1,875.00

Availability: Usually Ships in 1 to 2 Weeks


RAM4021 Option*:

Low Hydrogen Interference CO Sensor

RAM4021 Low Hydrogen Interference C*:

RAM 4021 Wall Mounted Filter Panels


GFG Instrumentation RAM 4021 Respiratory Airline Monitor

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 our innovative 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 many 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 NFPA 99 C-26 All models may be purchased with or without airline filter systems. 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). Wall mounted filter panel option 8025 (25 CFM), 8050 (50 CFM), and 8100 (100 CFM) The 25, 50 and 100 CFM panels filter out dangerous toxins from supplied air sources and ensure clean, breathable air. The three-stage filter system efficiently removes particulates, oil vapors and hydrocarbons from an air supply. After filtration, the regulator sets the pressure for the respiratory equipment and the manifold assembly provides multiple outlets for airline hose quick connections. The model 8025 panel includes two user female quick connect outlets; the 8050 includes four, and the 8100 includes eight. A 1/2" NPT connection is standard on all 50 and 100 CFM panels, and a 3/8" NPT connection is standard on all 25 CFM panels.

  • Continuous Carbon Monoxide (CO) monitor for compressed air
  • Robust, easy to operate design
  • Integrated dew point measurement (if specified)
  • Meets OSHA monitoring requirements for grade D breathing air
  • Dryer control relays (DPX model only)
  • User adjustable alarm points
  • Dry contacts for remote horn and lights, and internal case mounted horn
  • LCD display
  • NEMA 4X housing
  • Three-stage filtering option for up to 8 users
Part Numbers- ABL-4021, 4021, 4021-AR, 4021-DPX, 4021-DPX-PR, 4021-DPX-PR-420, 4021-PR, 4021-TS, 9025-XP, 9025-XP1K, 26-SASCO-12V,

Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 1 Write a review.

  0 of 0 people found the following review helpful:
5 of 5 Breathing Air Monitor March 19, 2014
Reviewer: Ron De Mars from San Diego, CA  
Needed something to detect the oxygen coming out of our breathing air compressor.  Inexpensive and easy to install.

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