Hawk Measurement’s new low frequency “Acoustic Wave Transmitter” is non-intrusive and will penetrate through the froth to measure the pulp height. The Hawk sensor is mounted above the froth and pulp height, so it has no maintenance or mechanical problems. Typically the transmitter can be mounted at walkway height for easy serviceability. The low frequency level transmitter can be supplied ready for connection to the typical 2 wire loop power supply used for the displacement float transmitter which it is replacing. Remote mounted transmitters are also an option.