Respiratory Air Monitors

With over twenty-five years of experience in providing Grade D and E breathable air from almost any compressed air source, GfG Instrumentation has developed the most complete line of respiratory air monitors. Our respiratory air monitors are able to detect hydrocarbons, CO, O2, and dew-point. Wall-mount and portable complete systems are available for up to eight users. Systems are available in standard configurations, but can be customized to accomodate specific needs.

The industries that depend on this equipment are numerous and include: surface finishing, automotive painting, sandblasting, medical facilities, foundries, petrochemical industries, asbestos abatement, and many others. OSHA's increased enforcement of respiratory air standards has led to more sales of this equipment than ever before.

GfG Instrumentation is committed to remaining the industry leader in respiratory air monitoring. Providing the customer with simple to use, long-lasting products, a 24 hour turnaround on warranty repairs, a 48 hour turnaround on all other repairs, and same day shipping on most new orders is our promise of satisfaction.

Along with the development of our newest respiratory air monitor, the RAM 744, we have completely renovated the RAM product line to continue to meet changing requirements for respiratory air monitoring.

OSHA Respiratory Standard 1910.134 (Standard - 29 CFR)


RAM 4021
    RAM 4021
  • Meets OSHA requirements for 'grade D' breathing air
  • Continuous monitoring of supplied breathing air
  • CO, CO + O2, CO + dew point monitoring
  • AutoCal® automatic calibration
  • Three-stage filtering option for up to 8 users
  • User adjustable alarm points
  • Dry contacts for remote horn and lights
  • Internal horn
  • LCD display
  • NEMA 4X casing
RAM 50
    RAM 50
  • Meets OSHA Requirements for Compressed Air
  • Continuous Monitoring of Breathing Air
  • CO and Organic Vapor Detection
  • Simple Calibration and Maintenance
  • Multiple Filter Panel Options
RAM 744

    RAM 744
  • Meets OSHA Requirements for Compressed Breathing Air
  • Continuous Monitoring of Supplied Breathing Air
  • Carbon Monoxide Detection
  • AutoCal® Calibration and Maintenance
  • Three Stage Filtering

Control Panel
Dew Point

  • Reading of dew point values on a 3-digit display
  • Menu display
  • 3 variably adjustable alarm thresholds
  • Peak value memory
  • Adjustable relay functions: NC / NO contact, open-circuit / closed circuit
  • Alarm hystereses prevents “flickering” of relays
  • 4 - 20 mA analog output signal