I have an application requiring 0-2 mBar Cals (a leak detection system). I believe my lowest measurement is at 0. 40 mBars. Anyone know low cost brand name for testing at these levels. By the way, I'm primarily an electronic metrologist, and have to do piles of legwork when ever these things come up. Thanks for any help. I have a pressure standard for higher pressures (DH Inst. RPM-4), but it isn't adequate for these.
Try a meriam meri-cal dp200I or a dp2000I they are 200 inh2o and 2000 inh2o and can be had at a ±0.01% of Full Scale accuracy these should cover you