A great place to start Disorder information source Rated and Reviewed Sleep Links Entrance to all monitored Sleep Forums Search all of Sleepnet.com


Apnea Forum
Posting


Archived Apnea Forum38 viewing only. To post a new topic go to the Apnea Forum Homepage.

Re: Cheap & effective manometer


Posted by Will on August 25, 2000 at 23:01:05:

In Reply to: Re: Cheap & effective manometer posted by Michael on August 25, 2000 at 05:45:00:

Hi Michael,

You could use a hose the same size as the port, BUT, the physics actualy state that the water will go up the straw in porportion to the size of the chamber under preasure. That means that if the chamber in 100mm across and the tube is 22mm across, then the you need to calculate how much the water in the chamber was pushed down & how much water was pushed up the straw & algebraicaly add the ratios. By keeping the straw small, about the size of a drinking straw, the error is so small that you don't have to bother with it :-)

Also because the water in the chamber is being pushed down a little, you can't just place the bottom of the straw right at the water line because then as the water went down air would escape up the straw.

I'm glad everyone is having fun with this!

Will

Follow Ups:


Archived Apnea Forum38 viewing only. To post a new topic go to the Apnea Forum Homepage

  • IMPORTANT : Information not intended as medical advice. If you suspect that you have a sleep disorder you should seek care from a qualified professional. Read Terms of Use.
  • The Sleep Forums are not to be used for commercial purposes.
  • Commercial products and services are not endorsed by Sleepnet.com.
  • Sleep Deprivation due to Sleep Apnea and insufficient sleep are common and can present as insomnia, narcolepsy, or idiopathic hypersomnia. In infants and children sleep problems commonly present themselves as ADD or ADHD.


Copyright ©1995-2005 Sleepnet.com., All rights reserved