If your coupe is like mine there is more than adequate ventilation to prevent the CO problem. Also I have used the pellet type for as many years as it has been available and I am still here. I will not install another instrument, regardless. What is next with these knee jerk govenment bureaucrats? Bob
--- On Wed, 3/10/10, Caliendo Dan <[email protected]> wrote: From: Caliendo Dan <[email protected]> Subject: Re: [ercoupe-tech] FW: Engine Exhaust (ATA code 78) and Carbon Monoxide Detectors (ATA code 25) - General Aviation To: "James B. Brennan" <[email protected]> Cc: "Bill BIGGS" <[email protected]>, [email protected] Date: Wednesday, March 10, 2010, 3:25 PM The clip on oxygen meters (aka: pulse oximetry) is not a practical way to watch for carbon monoxide (CO...not CO2) exposure. Here is a cut and paste from a study done: Clinical bottom line (level 4) Among patients with suspected smoke inhalation or carbon monoxide poisoning, pulse oximetry was inaccurate. The higher the carboxyhaemoglobin level, the greater the inaccuracy. Consequently, a direct blood gas measurement of the HbCO level will be necessary in all cases. Dan C On Mar 10, 2010, at 10:45 AM, James B. Brennan wrote: There's a "backdoor" CO2 tester for $40-$50, that being a clip on your finger blood oxygen meter... the only drawback is that to check your situation, you have to fish it out of your flight bag, clip it on a finger and see how your blood oxygen is doing (as CO2 would diminish it). I have one for other reasons, but it will be in my flight bag next time out. I got mine from http:// www.semedicalsupply .com/pulse_ oximeters. htm whatever... Beach Brennan WST
