All of foundation fieldbus devices have be registered to http://www.fieldbus.org/index.php?option=com_content&task=view&id=85&Itemid=199
and this mark has to stamp on product but I found some of field instrument and DCS were failed communication so recommendation such Yokogawa CentumVP and K-TEK magnetic float level transmitter.
Cable distance limitation
Total signal length = trunk + all spur, max allowed length is 1900 meters, trunk or homerun cable is 16 AWG multi-pair individual shielded and Spurs, max length shall be 200 meters.
cont...
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