The Jupiter® JM4 magnetostrictive level transmitter
The Jupiter® JM4 magnetostrictive level transmitter is a loop-powered 24 VDC liquid-level transmitter and is available as a direct insertion transmitter or as an external mounted transmitter onto a Magnetic Level Indicator. It relies on the position of a magnetic float which is designed precisely for the liquid to be measured. This high-accuracy device can be designed for liquid level and/or liquid-liquid interface measurement.
Principle The Jupiter JM4 magnetostrictive level transmitter is a loop-powered 24 VDC liquid-level transmitter and is available as a direct insertion transmitter or as an external mounted transmitter onto a Magnetic Level Indicator. It relies on the position of a magnetic float which is designed precisely for the liquid to be measured. This high-accuracy device can be designed for liquid level and/or liquid-liquid interface measurement.
Technology of JM4 magnetostrictive level transmitter Magnetostriction A low-energy pulse, generated by the JUPITER 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.
How magnetostriction works LOW-VOLTAGE PULSE On-board electronics send a low-voltage electrical pulse down the magnetostrictive wire at the speed of light, ten times per second.
MAGNETS Magnets contained within the float focus their energy toward the wire at the precise location of the liquid level.
PIEZOELECTRIC CRYSTALS The mechanical wave is converted back into electrical energy by two piezoelectric crystals. The on-board electronics interpret the time-of-flight data and indicate the position of the float magnets.
TWIST Interaction between the magnetic field, electrical pulse, and magnetostrictive wire cause a slight mechanical disturbance in the wire that travels back up the probe at the speed of sound.
Features of JM4 magnetostrictive level transmitter - 4-button user interface and graphical LCD display provide enhanced depth of data, indicating on-screen waveforms and troubleshooting tips. - 4-20 mA output - Rotatable housing can be dismantled without depressurising the vessel via “Quick connect/disconnect” probe coupling. - Ergonomic dual compartment enclosure - Simple set-up and configuration - Smart Probe Technology - Easy attachment to an MLI - Direct insertion for a wide variety of vessels and applications
Application of JM4 magnetostrictive level transmitter Chemical - Chemical injection - Chemical injection skids - Condenser - Deionization tanks - Distillation columns - Distillation towers - Liquid-Liquid extraction - Neutralization - Quench Tower/Settler - Reboiler - Reflux drum - Scrubber vessels - Steam drums for chemical industry
Natural Gas - Chemical injection skids - Compressor Scrubber - Compressor Waste Liquid - Gas Dehydration - Natural gas separators - NGL recovery & Storage - Separators - Sour gas treatment - Sulfur Recovery - Vapor recovery unit