Float Level Transmitter
Intrinsically Safe Float Level Transmitter - Image 2
Intrinsically Safe Float Level Transmitter - Image 3
Float Level Transmitter

Intrinsically Safe Float Level Transmitter

MPI-F/B

Big Time Anti-Corrosion and HazLoc Ratings For Big Applications

The MPI-F/B Float Level Transmitter is designed for large tanks, offering accurate and reliable liquid level measurement. Featuring an aluminum flexible stem, it simplifies installation and wiring, even in tall tanks up to 32 feet. This intrinsically safe transmitter provides versatile output options, including RS-485 Modbus and 4-20 mA, making it ideal for industrial applications requiring precise level monitoring.

  • Flexible Installation: 7/8” flexible aluminum tubing allows for easy setup without large cranes.
  • Modbus Compatibility: RS-485 Modbus RTU output integrates seamlessly with PLC and control systems.
  • Remote Monitoring: Works with LOE Master or RST-5003 for internet connectivity.
  • Reliable in Harsh Environments: NEMA 4X/IP65-rated for protection against dust, water, and extreme temperatures (-40° to 185°F).
  • Precise Measurements: ±0.05% FS or ±1 mm accuracy, ideal for oil/water interface monitoring, thick fluids, and industrial processes.

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MPI-F
Install Guide

MPI
PECEx Certificate

Modbus
Software Download
  • Resolution:
    • 4-20 mA: 14 bit DAC (1 mm); Modbus: 0.04 in. (1 mm)
  • Distance Accuracy:
    • 4-20 mA: Greater of ±0.05% of FS or 1 mm
    • Modbus: ±0.04 in. (±1 mm)
  • Temperature Accuracy:
    • Digital Temp Sensor: ±1°C
    • API 18.2 Temp Sensors:
      • ±0.25°C over -40° – 85°C
      • ±0.13°C over +20° – 70°C
  • Operating Temperature: -40º – 185ºF (-40º – 85ºC)
  • NEMA 4X, IP65
  • Supply Voltage: 8-24 VDC (Modbus), 12-24 VDC (4-20 mA)
  • Current draw:
    • 4-20mA, Single / Dual float 22 / 44 mA (max)
    • Modbus (single or dual float) 15 mA (typ.)
  • Reverse polarity protection: Yes
  • CE Compliancy: CE compliant to EN 61326
  • RS-485: Optional RST-6001 USB to RS-485 converter
  • 4-20 mA: Factory set or RST-4100 programming module
  • Output
    • Single or dual loop-powered 4-20 mA
    • Modbus RTU (RS-485), optional temperature sensors
  • Housing: Cast aluminium, epoxy coated
  • Stem: 7/8” Ø Flexible Tubing with Braid, 316L SS
  • Stem Length: 4 – 32 ft. (1.22 – 9.75 m)
  • NEMA 4X, IP65
  • cCSAus Certificate CSA19CA70219727:
    • 8-24 VDC, Imax = 280mA
    • Class I, Division 1, Groups C, D T4;
    • Class I, Zone 0; AEx ia IIB T4 Ga; Ex ia IIB T4 Ga, IP65
    • Ta = -40º to 85ºC
  • ATEX Certificate Sira 19ATEX2072X:
    • II 1G
    • Ex ia IIB T4 Ga
    • Ta = -40º to 85ºC
  • IECEx Certificate IECEx SIR 19.0026X:
    • Ex ia IIB T4 Ga
    • Ta = -40º to 85ºC
What is the MPI-F/B sensor used for?

The MPI-F/B sensor is designed for continuous liquid level measurement in various applications, including storage tanks, fuel tanks, oil/water interface measurement, and environments with thick, viscous, or sludgy fluids. It’s suitable for industries such as oil and gas, water and wastewater treatment, chemical processing, and more.

The MPI-F/B is intrinsically safe and certified for use in hazardous locations (Class I, Division 1, Zone 0). It meets CSA, ATEX, and IECEx safety standards, ensuring reliable operation in environments where explosive gases or vapors may be present.

The MPI-F/B features an RS-485 Modbus RTU output, allowing seamless integration with Modbus-compatible controllers. It can also pair with the MDI controller to create a self-contained, intrinsically safe level monitoring solution without the need for additional barriers.

The MPI-F/B offers various material options for floats to ensure maximum chemical compatibility. This flexibility allows the sensor to be tailored to specific applications and the chemicals present in the measured liquids.

Yes, the MPI-F/B offers various options for stem and float materials, lengths, and output configurations, allowing customization to meet specific application requirements.

MOUNT

Flange, No Mount, NPT, Panel Mount, Tri Clamp
OUTPUT

4-20 mA, Modbus
PROBE LENGTH

4' – 32'
CERTIFICATION

ATEX, CSA – General, IECEx, Intrinsically Safe
ENCLOSURE PROTECTION

IP65, NEMA 4X
INDUSTRY

Chemical, Food & Beverage, Industrial Automation, Oil & Gas, Water & Wastewater

WARRANTY

APG warrants its products to be free from defects in material and workmanship under normal use and service of the product for 24 months from the date of shipment from APG, unless otherwise specified by APG in writing. Read our full warranty policy HERE.

RETURNS

Returns and allowances must be authorized by APG in advance, which authorization may be granted or withheld by APG in APG’s sole and absolute discretion. Read our full return policy HERE.

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