APG MPI-E/R Intrinsically Safe Magnetostrictive

APG MPI-E/R Intrinsically Safe Magnetostrictive

APG MPI-E/R Intrinsically Safe Magnetostrictive provides highly accurate and repeatable level readings in a wide variety of liquid level measurement applications. The MPI-R’s large, buoyant, and robust float allows for use in harsh applications where fouling or buildup might otherwise be of concern. The MPI-E’s lighter weight design allows it to be used in applications where space is limited. The MPI-E Chemical has a chemical resistant coating, allowing for use in corrosive, acidic, or marine environments. The MPI-F’s flexible stainless steel stem allows for installation in tall tanks without needing a crane, and the MPI-T’s 1” titanium stem provides compatibility in a wider range of corrosive media–including H2S–in larger tanks.

Extreme accuracy with intrinsically safe wiring. Both the 0.5″∅ MPI-E and the 1.0″∅ MPI-R are built for long-lasting, dependable performance in harsh applications and hazardous locations. The MPI magnetostrictive liquid level probe brings Intrinsic Safety to the robust construction of our MPX probes. It’s also an ideal solution for taking two measurements: both the interface level measurement and a total volume.

APG MPI-E/R Intrinsically Safe Magnetostrictive Features

  • Class I, Division 1, and Class I, Zone 0 Hazardous Location Rating (cCSAus, ATEX, IECEx)
  • Highly accurate and repeatable readings
  • RS-485 (Modbus RTU) output
  • Rugged and reliable, lengths up to 25 feet (7.62 m)
  • Dual level (interface) measurement
  • Tank volume or level output, strapping table
  • Pairs with MDI display for self-contained, intrinsically safe, level measurement and display system

Self-Contained System

Pairing an MPI with an Intrinsically Safe Modbus Display MDI creates a self-contained, Intrinsically Safe level monitoring system. No barriers required!

Durable & Compatible

This liquid level sensor is built to take a beating – designed for high turbidity environments in hazardous locations. It also has several materials options for the stem and floats for maximum chemical compatibility.


  • C I, D 1 Hazardous Locations
  • Storage Tanks (All Sizes)
  • Fuel Tanks
  • Oil/Water Interface Measurement
  • Thick, Viscous, Sludgy Fluids
  • Industrial Effluent
  • Power Generation
  • Water and Wastewater Treatment
  • Pulp and Paper
  • Biotech
  • Oil and Gas
  • Petrochemical
  • Chemical

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APG MPI-E/R Intrinsically Safe Magnetostrictive Specification


Accuracy Greater of ±0.04 in. (±1mm) or 0.05% of full range
Resolution Modbus: ±0.04 in. (±1mm)


Supply Voltage 8-24 VDC
Typical Current Draw Modbus MPI-E: 24 mA
Modbus MPI-R: 25 mA
Protection Reverse polarity
EMI/Surge (IEC 61000-4-5, 4-6, 4-7)


Output Modbus RTU (RS-485) with Surge Protection
Internet Connectivity Tank Cloud LOE Master

Download Data Sheet: Intrinsically Safe Magnetostrictive Float Level Transmitter MPI-E/R

Ref: apgsensors.com