Does Your Pulse Oximeter Mean What It Says?

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Does Your Pulse Oximeter Mean What it Says? (Does Your Spouse?) FAR 91.211 requires supplemental oxygen after 30 minutes above 12,500 feet MSL and continuously above 14,000 feet and for pax above 15,000 feet MSL. A pulse oximeter can show…

What is the difference between standard and flare-tip cannulas?

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Q. I am not sure I understand the difference between the standard tip and the flare-tip EDS cannula. Can you explain to me the difference and when and how each should be used? A. As you know EDS stands for our Electronic Delivery System…

What are the different oxygen types?

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Q: Is it true that medical and welder's oxygen differs from aviation oxygen? A: There are no different grades of oxygen being produced or contained in cylinders under DOT regulations. Contrary to common myth ~ medical oxygen contained…

Why is my EDS Alarm Going Off?

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EDS Alarm Going off with Almost Every Breath Every once in a while, our service dept. will get an EDS unit sent to us from a customer who complains about the Apnea Alarm (Alert) going off almost every time a breath is requested through the…

I would like to replace my old steel oxygen cylinder in my type-certified aircraft with a new light-weight kevlar bottle. Can this be done?

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Yes, this can be successfully done using our MH-1 adapter. However, it is extremely important that the proper procedures be taken in order to receive an FAA-337 for this task. See the following PDF file for more information on this topic.

How is the oxygen saturation level in the body affected when altitude is increased?

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At sea level, oxygen saturation in the blood is approximately 95%, which does not appreciably decrease up to pressure altitudes of 10,000 ft. at which point it decreases to about 90%. Above 10,000 ft, the saturation drops more rapidly and human…

In simple terms, what happens during rapid decompression?

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Air at sea level will expand to 5 times its volume at 40,000ft. Lung capacity is approximately 6 liters. Therefore, during rapid decompression, a continuous exhalation is experienced. Holding one's breath may result in bursting of the lungs.…

Why does the EDS cost more as compared to something like an MP3 player or a cell-phone that seems to be just as, if not more, complicated than the EDS unit?

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We don't have the benefit of marketing the EDS anywhere outside of the aviation market. The FDA, which treats any oxygen device as a medical device and oxygen for consumption as a drug, vigorously inhibits any such marketing unless it is registered…

If my oxygen system has more than one oxygen cylinder and they share a common manifold what will the pressure read? Why does the pressure drop a little sometime after the fill?

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Regardless of the size of, or number of oxygen bottles in your aircraft if they share the same manifold the system will always read what ever the final pressure is. During an oxygen transfill the tank being filled will heat up. This causes the…

What type of fitting do I need to fill my built-in oxygen system?

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In the U.S. there are two (2) standard fittings used to fill oxygen systems. One is the SAE AS1046, a 9/16-18 coupling nut and nipple, sometimes know as the 'SCOTT' fitting. This may also be the ISO standard. Our TA-916-N & TA-916-S transfiller…

How come the Alps aviator's oxygen mask for the EDS does not have a bag hanging at the bottom?

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Because the standard passenger constant-flow mask primarily has the bag so that the FAA requirement of flow indication can be satisfied, it is not needed because the EDS provides a positive indication of oxygen being supplied as well as an additional…