Endress Hauser Proline Promag L 400Endress+Hauser’s Proline Promag L 400 electromagnetic flowmeter for water and wastewater applications features an Ethernet port and built-in Web server for easy data access and configuration via any browser. The industry-optimized L sensor has drinking water approvals and corrosion protection that allows it to be installed underwater, underground and in saline environments. Sensors are available in nominal diameters from 2 to 90 inches.