Air Systems Portable Airline Monitor Carbon Monoxide 150 PSI Lights Alarm Calibration Gas CO-91LACG
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Air Systems Portable Airline Monitor Carbon Monoxide 150 PSI Lights Alarm Calibration Gas CO-91LACG
The Air Systems Portable Airline Monitor CO-91LACG is designed for industrial safety professionals who require reliable detection of carbon monoxide levels in breathing air systems. This portable monitor connects to breathing air filtration sources or ambient air pumps, providing real-time CO or CO/O2 monitoring with audible and visual alarms to ensure worker safety in confined spaces or hazardous environments.
Key features
- Includes ¼ industrial interchange coupling with a 5-foot hose for easy connection
- Audible alarm at 95 dBA alerts users when CO levels exceed 10 ppm (5 ppm for Canadian standards)
- External alarm jack supports remote alarm device connection
- Operates on 9-volt batteries, 8-16 VDC, or 115 VAC for versatile power options
- High intensity 120 dBA alarm available as an upgrade for louder environments
- Portable design with case and calibration gas kit included for on-site calibration and maintenance
Ideal applications
- Industrial breathing air quality monitoring
- Confined space entry safety
- Environmental air sampling and filtration systems
- Maintenance and calibration of air filtration equipment
- Worksites requiring continuous carbon monoxide detection
Why buyers choose this product
This portable airline monitor offers dependable CO detection with clear audible and visual alarms, ensuring immediate awareness of hazardous air conditions. Its compatibility with multiple power sources and remote alarm connectivity enhances jobsite flexibility, while the included calibration gas kit supports ongoing accuracy and compliance.
Specifications
| Brand | Air Systems |
| Product type | Portable airline monitor |
| Alarm sound level | 95 dBA standard, 120 dBA optional |
| CO alarm threshold | 10 ppm (5 ppm Canadian) |
| Power options | 9-volt batteries, 8-16 VDC, 115 VAC |
| Hose length | 5 feet |
| Coupling type | ¼ industrial interchange |
| Includes | Calibration gas kit, case, lights, alarms |
Additional product details
The CO-91LACG monitor is designed for use in both closed and upright positions, ensuring reliable detection in various orientations. Its rugged case protects the unit during transport and use, while the included calibration gas kit facilitates accurate field calibration to maintain compliance with safety standards.
This portable airline monitor is an essential tool for ensuring safe breathing air quality in industrial and confined space environments.
MFG Part #: CO-91LACG
| Product Type | Allegro |
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Shipping
We Ship Internationally - We can ship to virtually any address in the world, with some restrictions on certain products.
Standard Delivery: Ground shipping typically delivers in approximately 5 business days from our Columbus, OH warehouse.
Expedited Options Available:
- Priority and Expedited handling speeds up processing
- Overnight shipping available (guaranteed) - must order by phone before 12pm EST M-F
- Some items ship "Manufacturer Direct" and cannot be expedited
Important: Inspect your delivery before signing! Note any damage on the shipping document.
Returns Policy
30-Day Return Window: Most new, unopened items can be returned within 30 days for a full refund.
Non-Returnable Items:
- Made-to-order fall protection products
- Used vacuums, respirators, gas monitors, or air scrubbers
- Calibration gas (hazardous material)
- PAPR and specialty respiratory items (non-stock)
Restocking Fee: 30% restocking fee or shipping costs apply if return is due to buyer error.
Refund Timeline: Expect refunds within 4 weeks, though many are processed faster.

