Magnetostrictive Level Measurement

Magnetostrictive level measurement uses a sonic pulse and a magnetic float to determine liquid level with high precision. AMETEK LMS offers magnetostrictive transmitters designed for continuous level and interface measurement across a wide range of process vessels.

How Magnetostrictive Level Measurement Works

A low-energy pulse, generated by the electronics, travels the length of the magnetostrictive wire. A return signal is generated from the precise location where the magnetic field of a float intersects the wire. A timer precisely measures the elapsed time between the generation of the pulse and the return of the acoustic signal. Each cycle occurs ten times per second, providing real-time and highly accurate level data.

Common Applications for Magnetostrictive Level Transmitters

Magnetostrictive transmitters are commonly used to measure:

• Continuous liquid level in tanks and vessels
• Liquid-liquid interface level
• Level in applications requiring high accuracy and repeatability

Because the float rides directly on the liquid surface, this technology is well suited for:

• Applications already using a magnetic level indicator
• Processes where a Safe Failure Fraction rating matters for safety instrumented systems
• Direct insertion into process vessels where external mounting isn't practical

The Jupiter® magnetostrictive level transmitter provides a 4-20 mA output, proportional to the level being measured. JUPITER models are designed to attach quickly and easily, via standard clamps, to Atlas® and Gemini® magnetic level indicators or can be directly inserted into a wide variety of process vessels.