Measuring fill levels of up to 20 meters with radar or ultrasound

Sitrans Probes LU and LR from Siemens Automation and Drives (A&D) continually measure the fill level of storage tanks and process vessels as well as the flow rate in open flumes. The Sitrans Probe LU operates with ultrasound, the Sitrans Probe LR with radar. Both new devices process signals over a broad measuring range and have a high signal-to-noise ratio. Interference echoes are automatically filtered out to ensure reliable analysis of echo signals. System operators in the water/sewage, food products, mining, cement or chemical industries benefit by reliable results with high precision.

The 2-conductor Sitrans Probe LU ultrasonic transceiver has a measuring range of up to 12 meters in liquids and slurries and is particularly well suited for stored food products and chemicals. The low-noise sensor is made of ETFE (ethylene-tetrafluorethylene) or PVDF (polyvinylidene fluoride) with patented anti-noise shielding and is robust under exposure to various chemicals and varying temperatures.

The 2-conductor Sitrans Probe LR radar level transmitter measures fill levels and volumes in applications involving chemical vapors, temperature gradients, vacuum and high pressure. The solid polypropylene rod antenna operates at 5.8 gigahertz, in North America at 6.3 gigahertz, with a measuring range of 0.3 to 20 meters. It is highly resistant to chemicals and hermetically sealed. The integrated interior shielding suppresses noise, such as might result from mounting studs.