ULPA 2 DIFFERENTIAL PRESSURE METER CALIBRATION This topic contains 0 replies, has 1 voice, and was last updated by lmejosol 2 weeks, 6 days ago. Author Posts September 24, 2019 at 7:33 pm #10272 lmejosolParticipant Has anyone calibrated the ULPA2 differential pressure tansmitter? I got the 0.25 inh2o range and i’m having a hardtime controling the pressure i;m sourcing and stabilization. Please advice anything..Thanks ! Author Posts You must be logged in to reply to this topic.