For continuous level measurement in liquids and bulk solids, the Levelflex M from Endress+Hauser Inc.
, Greenwood, IN, is a top-mounted compact transmitter with guided radar. It can reliably handle measurements of powdery and granular bulk materials, even with dust clouds from pneumatic filling, and can also measure liquids despite foam and turbulent surfaces. The device is unaffected by fluctuations in density, temperature, or build-up of dust and has a range of up to 100 ft. Three probe versions are available: cable, rod, and coax. Interfaces include HART, 4–20 mA, Profibus-PA, and Foundation fieldbus.