tag:blogger.com,1999:blog-24863457.post4758652780214560686..comments2024-03-23T14:17:37.033-04:00Comments on Hammered Out Bits: Sometimes - A great notion : Bellows Deliverythe Wareham Forgehttp://www.blogger.com/profile/14584324650436543045noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-24863457.post-61181139865894785342021-02-14T09:44:07.617-05:002021-02-14T09:44:07.617-05:00Yes my own work is producing related results. The...Yes my own work is producing related results. The Mastech MS6252B is a much nicer unit (USB output is a real boon for work like this) - but vane-type anemometers are problematic. The good ones sample once per second. The poor ones sample less than that. The pace of a bellows has a minimum driven by its design (the flap-valve must be kept closed) but that runs 60-90 beats per minute. So to model the changes in the flow requires a higher sensitivity than any vane-type anemometer I have found.<br /><br />A pitot tube type or a temperature differential type is likely a better choice. The Omega HHF1001A will do 4 samples/second which does seem better than most.<br /><br />I do think though that the float tube with a visual reading from video (allowing 30 samples/sec) is where we need to go but the floats I am working with need to be sub-1g in mass which is problematic. More design is required<br /><br />My talk is 3pm on Mar 29 at EAC (and will be posted on youtube and will remain up there after the conference). Please do join us. https://exarc.net/meetings/eac12Neilhttps://www.blogger.com/profile/16603072380451991431noreply@blogger.com