Ultrasonic Level Meters

Ultrasonic level meters are economical non-contact instruments when the air space between the sensor and the liquid surface is stable. They are widely used on water tanks, sewage sumps, pump stations, open basins, chemical day tanks and utility storage tanks.

The technology measures distance by acoustic time-of-flight, so selection must start with blind zone, measuring range, tank height, maximum fill level, foam, vapor, turbulence, ambient temperature variation and whether the nozzle gives a clear sound path.

Integrated ultrasonic meters are convenient when the display and wiring can stay at the tank top. Split ultrasonic meters move the display, relay logic and power wiring to a safer wall or panel location. Two-wire transmitters fit analog loop projects, while compact and low blind-zone sensors fit short tanks and OEM equipment.

Corrosion-resistant and explosion-proof ultrasonic products should be treated as application-reviewed variants. They are useful in the right conditions, but heavy vapor, dense foam, pressure variation or aggressive condensation may require radar or another level technology.

For open-channel flow, WELK selects the ultrasonic head sensor together with the primary structure information. Send the flume or weir type, dimensions, maximum flow, mounting height, power supply and output signal before quotation.