Promag W is offered with welded flanges as well as with lap-joint flanges. The 0 DN inlet option allows for measurement performance of ±0.5 percent or better when the meter is installed immediately after an obstruction, says the manufacturer. Three liner options — hard rubber, polyurethane and PTFE — are offered. Some models in the line such as Proline 300/500 transmitters include a web server as a standard. Using a standard Ethernet cable and a laptop, or wireless over WLAN, users have direct access to all diagnostic, configuration and device data without additional software or hardware. This enables maintenance and service.