I am making my first steps into the arduino world and I would appreciate if somebody can suggest a vacuum pressure sensor that is reliable in the order of 1000 Pascal (absolute pressure).
The intention is to use it for pressure measurements in an academic experiment concerning thermally-driven cooling.
I haven't found anything explicitly reporting reliability and accuracy in that range
Does anybody have any experience with arduino and vacuum pressure sensors?
Normal pressure sensors (from Freescale/NXP) can't do that.
Some industrial absolute pressure transducers might start at 0 mbar.
My first thought : that is easy. An absolute pressure sensor that measures against a vacuum and starts from zero. However, it is not easy to find one, as you already wrote.
Mouser.com and Digikey.com have selection tables. Find the pressure sensors and in that section select either 'absolute' or 'vacuum' in the selection tables.
I spent some time at those sites, but I don't know what a good sensor is for you. Not many are accurate at 1kPa, perhaps not even one ?
I think that range of absolute pressure is very difficult to measure accurately. I suggest to call Technical Support at Omega and Honeywell (two manufacturers of high quality commercial gauges) and talk to them.