Water Environment Federation (WEF) Discussion ForumsWater Environment Federation (WEF) Discussion Forumshttp://www.wef.org/TechnicalDiscussions/jfuller@wef.orgSat, 06 Sep 2008 23:32:06 GMT20http://www.wef.org/TechnicalDiscussions/Topic8960-14-1.aspxThe YSI will compensate during measurement but you do have to calibrate the barometric pressure during each calibration of meter. </P><P>EgadzFri, 30 May 2008 10:39:46 GMTEgadzhttp://www.wef.org/TechnicalDiscussions/Topic8960-14-1.aspxI am using a YSI probe and meter (model 5100) to set up BODs. I would like clarification on the effects of barometric pressure on BOD readings. From the manual, I understand that the instrument has the capacity to compensate for altitude or barometric pressure. Does this mean that I do not have to anything else? Please let me know so that I could can change our set up accordingly.<br><br>Thank you.Tue, 22 Apr 2008 11:28:33 GMTweffster