3M™ Macurco™ Carbon Monoxide Detector and Controller

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3M™ Macurco™ Carbon Monoxide Detector and Controller

Carbon Monoxide Detector With Fan and Alarm Relays

What's special about this fixed gas detector?

Specific to only carbon monoxide (CO) gas to avoid complicated calibration, and multiple alarms that could become a confusing nuisance or hindrance to your establishment
Automatic ventilation control turns on your exhaust fans when carbon monoxide levels are detected
Meets or exceeds UL and OSHA standards for CO exposure, and the requirements of the Uniform Building Code for use in enclosed garages
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$293.97

Carbon monoxide buildup is an unseen hazard often overlooked in enclosed or poorly ventilated structures with gas powered machinery and automobiles. Whether it be an enclosed parking garage, automotive maintenance facility, or warehouse with a forklift, carbon monoxide levels could easily rise undetected and become a serious hazard to your customer's, employee's, or loved one's health, with death being the worst case scenario. 3M™ Macurco™ brand of gas detectors and exhaust fan controllers are a safe, secure, and reliable way to make sure your place of business, work, or home is properly protected and monitored from these unseen dangers.

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Adjustable fan relay activates your exhaust fans at 35 ppm or 25 ppm averaged over 5 minutes, for removing harmful CO from enclosed or poorly ventilated areas
Alarm relay activates when CO levels are reaching harmful levels (100 ppm of CO over 30 minutes, or 200 ppm of CO over 10 minutes)
Quality long-life, solid state sensor provides reliable service for up to 7 years
Operating light reflects the system status of the controller
Micro computer controlled to provide reliable operation and internal supervision: any internal problem or detection problem/malfunction will cause exhaust fans to turn on automatically to prevent unnoticed or undetected carbon monoxide gas build up
Meets UL 2034 standard

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PART #	3M-CM-21A
Price	$293.97
Power	3 watts from 12 to 24 VAC or VDC
Current	12 V - 0.25 amps, 24 V - 0.12 amps
Weight	0.55 lbs
Size	4 1/2" x 4" x 2 1/8"
Color	Gray
Connections	7 each - #20 Wires x 6"
Mounting Box	(not included) 4" x 4" Electric Box
Fan Relay	5 amp, 240 VAC, pilot duty, SPDT
Fan Relay Actuation	35 or 25 ppm CO after 5 minutes
Alarm Relay	0.5 amp 200 V, 10VA
Alarm Relay Actuation	100 ppm CO after 30 minutes or 200 ppm CO after 10 minutes
Operating Environment	0 to 125 F, 10 to 90% RH
Repeatability	± 10% at 50 ppm calibration point
Linearity	± 10%

Carbon Monoxide Exposure: ppm CO vs. Time:
CM-21A Fan Relay	200 ppm CO	100 ppm CO	50 ppm CO	35 ppm CO
CM-21A Fan Relay	5 minutes	5 minutes	5 minutes	5 minutes
CM-21A Alarm Relay	10 minutes	30 minutes	None	None
UL 2034 Standard	35 minutes	90 minutes	No Standard	No Standard
OSHA Standard	No Standard	No Standard	8 hr TWA	No Standard
UBC Standard	60 minutes	No Standard	8 hr TWA	No Standard

PART #	DESCRIPTION	PRICE Add Quantity at Checkout
3M-CM-21A	3M Macurco Fixed Carbon Monoxide Gas Detector and Fan Controller	$293.97

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MANUALS & USER GUIDES -

CM-21A User Guide (PDF)

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