Product Description
44L 4-Gas Calibration Cylinder – 250 PPM CO with Ambient 20.9% Oxygen
This 4-gas calibration blend is configured for facilities requiring higher carbon monoxide alarm validation while maintaining ambient oxygen reference conditions.
With CO at 250 PPM and H₂S at 15 PPM, this mixture supports elevated toxic threshold verification across industrial and confined space monitoring programs.
Gas Composition Profile
Hydrogen Sulfide (H₂S): 15 PPM
Carbon Monoxide (CO): 250 PPM
Methane (CH₄): 2.5% (50% LEL)
Oxygen (O₂): 20.9%
Balance Gas: Nitrogen
• 15 PPM H₂S confirms low-to-moderate H₂S alarm programming.
• 250 PPM CO supports higher-level CO alarm setpoint validation.
• 2.5% methane equals 50% LEL for combustible sensor confirmation.
• 20.9% oxygen provides ambient reference baseline.
This blend allows technicians to isolate toxic and combustible channel verification without introducing oxygen-deficiency simulation.
Cylinder Specifications
Cylinder Capacity: 44L (1.5 Cubic Feet)
Fill Pressure: 750 PSI
Valve Type: C-10
Cylinder Material: Aluminum
Gas Reactivity: Reactive
The 44L 750 PSI format provides balanced output duration with manageable portability for field servicing.
Common Applications
• Industrial facilities with elevated CO setpoints
• Boiler rooms and combustion monitoring programs
• Utility maintenance teams
• Confined space detector verification
• Routine multi-gas servicing operations
This configuration is commonly selected when CO calibration range must exceed conservative alarm levels while maintaining atmospheric oxygen reference.
