Float Level Transmitter for Large Tanks
Float Level Transmitter for Large Tanks - Image 2
Float Level Transmitter for Large Tanks - Image 3

Float Level Transmitter for Large Tanks

MPI-F/K

Float Level Transmitter for Large Tanks

Reliable, Accurate Level Monitoring with the MPI-F/K Continuous Float Sensor.

The MPI-F/K Continuous Float Level Sensor from APG ensures precise liquid level monitoring in demanding industrial applications. Built with corrosion-resistant PVDF tubing, it simplifies installation in tall storage tanks while maintaining its Class I, Div 1 Intrinsically Safe rating. Designed for water, wastewater, chemical, oil and gas, and industrial effluent applications, the MPI-F/K provides continuous, accurate level measurement with minimal maintenance.

  • Flexible Installation: 5/8” flexible PVDF 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/IP66-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.

CUSTOMIZE YOUR SOLUTION

Skip Configuration
SKUTITLE
Product Title
CONFIGURED MODEL NUMBER:
Select an option to begin configuring.
The Kynar stem is susceptible to thermal expansion when the process temperature exceeds 73°F / 23°C. This expansion can be calculated as follows: Expansion = (Max Process Temperature (°F) - 73)*.000108 * Kynar Stem Length). This is the distance that must be left between the end of the Kynar stem and the tank bottom at the maximum process temperature. Please account for this expansion by reducing the stem length to allow for this gap when installed. The gap is zero if the process temperature is less than or equal to 73 °F.
Min. 120 in. –Max. 600 in.
Our sales team will assist with custom locations.
Product total
Options total
Grand total
ⓘ
PDF Download Icon

MPI-F/K
Install Guide

MPI-F/K
IECEx Certificate
Software Download Icon

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, IP66
  • Supply Voltage: 8-24 VDC (Modbus), 12-24 VDC (4-20 mA)
  • Current draw:
    • 4-20mA, Single / Dual float 22 mA / 44 mA (max)
    • Modbus (single or dual float) 15 mA (typ)
  • Reverse polarity protection:  Yes
  • 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 digital temp. sensors
  • Housing: Cast aluminium, epoxy coated
  • Stem: 5/8” Ø Flexible Tubing, proprietary PVDF formulation
  • Stem Length: 10 – 50 ft. (3.05 – 15.2 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

Settler

Remote Monitoring Gateway
Part #: 125422

VIEW PRODUCT PAGE

RST-6001

RST-6001

Modbus Data Logging
Part #: 125734

Inquire with sales to purchase

Is the MPI-F/K easy to install and integrate with my existing system?

Yes! The MPI-F/K offers a flexible design that supports easy installation in various tank configurations. It features RS-485 (Modbus RTU) and 4-20 mA outputs, making it compatible with most industrial control systems.

Yes, the MPI-F/K is capable of dual-level (interface) measurement, making it ideal for applications where monitoring two distinct liquid layers (such as oil and water) is required.

The MPI-F/K is rated for Class I, Division 1 and Class I, Zone 0 hazardous locations and certified by cCSAus, ATEX, and IECEx, ensuring compliance with strict safety regulations.

The MPI-F/K is available in lengths up to 50 feet (15.2 meters), making it suitable for a wide range of tank sizes and applications.

Yes, when paired with the MDI display, the MPI-F/K provides a self-contained, intrinsically safe level measurement and display system, eliminating the need for additional control equipment.

MOUNT

Flange, No Mount, NPT
OUTPUT

4-20 mA, Modbus, Remote Monitoring
CERTIFICATION

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

IP65, IP66, NEMA 4X
INDUSTRY

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

10' – 50'

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.

Suggested Products

Float Level Transmitter

MPI-E

Intrinsically Safe Magnetostrictive Float Level Sensor
$0.00
Float Level Transmitter

MPI-F/B

Intrinsically Safe Float Level Transmitter
$0.00
Intrinsically Safe Magnetostrictive Float Level Transmitter

MPI-R

Intrinsically Safe Magnetostrictive Float Level Transmitter
$0.00
Float Level Transmitter

MPI-E Chemical

Intrinsically Safe, Chemically Resistant Magnetostrictive Float Level Transmitter
$0.00