Where are you guys getting your vac gauges that read in absolute pressure. I’d like to pick one up in metric that read in kPa. ~100 at atmospheric, and 0 at true vacuum.
I’m not personally using absolute gauges but Schlueter sold some reasonably priced digital gauges that can read absolute pressure. If I remember correctly they were also able switch between the gauge and absolute. Don’t quote me on that though.
0 at TRUE vacuum? Pumps we use for composites are no where near true vacuum. If anything, a GOOD composite usable pump is only a roughing pump for various UHV pumps (ion, turbo, diffusion, etc) which cost a few 100k$
However, I’m sure there is something that at least does the method you want. Maybe.
Follow this link for your all your Vac gauges, Digital etc. very adjustable to suit most applications, I use them for Vac. infusion etc. http://www.vacmobiles.com/products4.html