Posted: Tue Feb 24, 2004 6:13 pm
I setup my Dwyer inclined manometer on my flowbench this past week and I'm to cheap to buy red manometer fluid, so I'm using mineral oil instead (referenced as the same specific gravity in an old manometer book I have). Now my question is what do I use as dye? Water based food coloring will not work. I've heard/read the ink in a ball point pen or magicmarker will work? Anyone try this? I'll have to setup a test of this idea maybe? Any other ideas? I dont want to stain the inside of my meter (I do have some old meters that are not that great to practice on).
Please don't tell me to go buy fluid (or I'll delete your post) . . . its all about the DIY aspect
Please don't tell me to go buy fluid (or I'll delete your post) . . . its all about the DIY aspect