The SONO-1000 from Bindicator, a Venture Measurement company, Spartanburg, SC, is a single-tank ultrasonic level sensor that measures bulk solids in vessels up to 30 m high. Suitable for use with a wide range of materials, the sensor features up to 4 process connections (two 1/2 in. NPT, two M20 × 1.5), a 4–20 mA output, and a programmable display. Both AC and DC versions of the device are available. The sensor can be used for bulk solids level measurement in locations with a limited number of vessels, where a separate controller may be cost-prohibitive.