Carbon Monoxide Meter measures up to 999 ppm.
February 7, 2011 -
Utilizing electrochemical carbon monoxide sensor, Model 450A-1 measures ambient concentration of carbon monoxide in environment and displays measurement on 2-line digital LCD screen. Unit also displays maximum recorded CO value since last reset and has audible alarm that warns of CO levels above 25 ppm. Operating on three AAA batteries, Model 450A-1 offers response time of less than 60 sec and includes built-in backlight for viewing in poorly lit environments.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Dwyer Instruments, Inc.
Hwy. 212 at 12
Michigan City, IN, 46361 USA

NEW Model 450A-1 Digital Pocket Size Carbon Monoxide Meter
Dwyer Instruments, Inc., the preferred source for your complete range of practical and affordable instrumentation, is announcing the release of its NEW MODEL 450A-1 DIGITAL POCKET SIZE CARBON MONOXIDE METER.
The Model 450A-1 Digital Pocket Size Carbon Monoxide Meter measures the ambient concentration of carbon monoxide (CO) in the environment and displays the measurement on the two line digital LCD screen. Besides the measurement, the maximum recorded CO value since the last reset is shown. An audible carbon monoxide alarm gives warning of CO levels above 25 ppm. For viewing in poorly lit environments, the built-in back light brightens the display. Model 450A-1 includes soft carrying case with belt loop, wrist strap, and three AAA batteries.
Complete details are available on our website @ http://www.dwyer-inst.com/Products/Pr...
Dwyer Instruments, Inc.
P.O. Box 373
Michigan City, IN 46361
Phone: (800) 872-9141 or (219) 879-8000
Fax: (219) 872-9057
Internet address: http://www.dwyer-inst.com/
E-mail: lit@dwyer-inst.com
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