Air Systems Portable Airline Carbon Monoxide Replacement Monitor Intrinsically Safe CO-91IS

Air Systems Portable Airline Carbon Monoxide Replacement Monitor Intrinsically Safe CO-91IS

The Air Systems Portable Airline Carbon Monoxide Replacement Monitor CO-91IS is designed for industrial safety professionals who require reliable detection of carbon monoxide in breathing air systems. This intrinsically safe CO monitor connects easily to breathing air filtration sources or ambient air pumps, providing critical real-time alerts to maintain safe air quality in confined or hazardous environments.

Key features

• Intrinsically safe design suitable for hazardous environments
• Includes ¼” industrial interchange coupling with 5’ hose for easy connection
• Audible alarm at 95 dBA with optional 120 dBA high-intensity alarm
• Visual alarm light activates when CO levels exceed 10 ppm (5 ppm Canadian standard)
• Standard alarm jack for remote alarm device connectivity
• Operates on 9-volt batteries, 8-16 VDC, or 115 VAC power sources

Ideal applications

• Industrial breathing air filtration monitoring
• Confined space entry safety checks
• Air quality monitoring in manufacturing and processing plants
• Use in environments requiring continuous carbon monoxide detection

Why buyers choose this product

This CO monitor offers dependable, intrinsically safe operation with clear audible and visual alarms, ensuring workers are promptly alerted to dangerous carbon monoxide levels. Its versatile power options and compatibility with remote alarm systems enhance usability and safety on demanding industrial jobsites.

Specifications

Brand	Air Systems
Product type	Portable airline carbon monoxide monitor
Model	CO-91IS
Safety rating	Intrinsically safe
Alarm sound level	95 dBA standard, 120 dBA optional
Alarm activation threshold	10 ppm CO (5 ppm Canadian standard)
Connection	¼” industrial interchange coupling on 5’ hose
Power options	9-volt battery, 8-16 VDC, 115 VAC
Alarm jack	Standard for remote device connection

Additional product details

The CO-91IS monitor is designed for use in both closed and upright positions, ensuring accurate detection and alerting in various industrial settings. Its durable construction and flexible power options support continuous monitoring needs in demanding environments where breathing air safety is critical.

This replacement monitor is ideal for maintaining safe air quality and protecting workers from carbon monoxide exposure in industrial and confined space applications.

MFG Part #: CO-91IS

Product Type	Allegro

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.

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