About: http://webisa.webdatacommons.org/326565562

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Why are two plugs provided on a D.P transmitter?1.The top plug is a vent plug for venting the air entrapped inside the cell.2.The bottom plug is a drain plug for draining the liquid accumulated inside the cell.
http://www.w3.org/ns/prov#wasQuotedFrom	slideshare.net