Coriollis mass meters typically can output density as well as flow. ABB has info on their website cordially, William Barber=20 -----Original Message----- From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On Behalf Of Balmer, Robert D. Sent: Wednesday, August 08, 2007 6:08 AM To: Foxboro DCS Mail List Subject: [foxboro] General Instrument Question I am involved on a project in China and there is a control engineer over there saying they can use a mass flow meter to measure density. I have never heard of such a thing, has anyone out there in control world seen such an application. If so could you point me to some literature on how it is accomplished? Regards, Robert Balmer Senior Applications Analyst/Programmer ISA CCST 319 463 2206 Robert_Balmer@xxxxxxx _______________________________________________________________________ This mailing list is neither sponsored nor endorsed by Invensys Process Systems (formerly The Foxboro Company). Use the info you obtain here at your own risks. Read http://www.thecassandraproject.org/disclaimer.html foxboro mailing list: //www.freelists.org/list/foxboro to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave