View Single Post
Unread 11-17-2004, 11:58 AM   #56
pHaestus
Big Player
Making Big Money
 
pHaestus's Avatar
 
Join Date: Aug 2001
Location: irc.lostgeek.com #procooling.com
Posts: 4,782
Default

Bill I have a question about dP measurement. It seems to me that the easiest way to deal with all the different possibilities of tubing and fittings and such is to:

1) zero the xmitter
2) Run a length of the tubing to be used over the flow range of interest (blank)
3) Cut the tubing in half, mount block/rad, and repeat (sample)
4) sample - blank = dP of only block/rad (this takes care of the dP of crosses and fittings and tubing and all leaving only wb).

Is that unnecessarily complicated? I was concerned that the friction factor of clearflex or silicone would be difft enough from copper pipe to make doing a calibration with just copper pipes of difft ID to be a mistake.
pHaestus is offline   Reply With Quote