Explosion Proof Magnetostrictive Level Sensor

Explosion Proof Magnetostrictive Level Sensor - Image 2

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Explosion Proof Magnetostrictive Level Sensor

MPX-E

DESCRIPTION
Features

Precision Level Monitoring for Demanding Environments

The MPX-E is a high-accuracy magnetostrictive level sensor engineered for performance in hazardous environments. This explosion-proof sensor provides precise, repeatable measurements of both interface levels and total volume—making it ideal for monitoring complex liquids in oil & gas, petrochemical, water treatment, and other critical industries. Its lightweight, compact build makes it easy to install in tight or confined spaces.

The MPX-E offers versatile output options, including Modbus RTU (RS-485) and 4–20 mA, and integrates seamlessly with any Modbus controller or PLC. It’s also fully compatible with Settler and Explorer, allowing for reliable remote monitoring over the Internet.

Built for high-turbidity environments, the MPX-E features multiple stem and float material options to ensure chemical compatibility and long-lasting durability in harsh applications.

Low-Level Fuel-Water Interface Detection: Available float options to detect minimal fuel and water levels beyond the probe, ensuring reliable interface measurement in tanks and industrial systems.
Hazardous Area Certification: Certified for Class I Divisions 1 & 2, Groups C & D, Class I Zone 1, and Class I Zone 2, ensuring safe operation in hazardous environments with combustible gases or vapors.
Versatile Output Integration: Offers 4-20 mA and RS-485 (Modbus RTU) outputs for seamless integration into PLCs, SCADA systems, and industrial automation platforms.
Durability & Longevity: Rugged design measures up to 12.75 feet (3.9 m), ensuring reliable performance in diverse industrial environments with minimal maintenance.
Comprehensive Measurement: Enables dual level (interface) measurement and calculates tank volumes using strapping tables, supporting accurate inventory management and operational planning.
Precision & Consistency: Delivers highly accurate and repeatable readings, crucial for precise tank level monitoring and interface detection between liquids.

Description
Additional information

MPX-E Datasheet

MPX-E User Manual

MPX-E Install Guide

Modbus Software Download

Performance

Resolution:
- 4-20 mA: 14 bit DAC (1 mm)
- Modbus: 0.04 in. (1 mm)
Distance Accuracy:
- 4-20 mA Modbus: Greater of ±0.05% of FS or 1 mm
Temperature Accuracy: RTD—1k Ohm: ±1°C

Environmental

Probe Operating Temperature: -40º–85ºC (-40º–185ºF)
IP65

Electrical

Electrical Connection: Terminal Block, 12–24 VDC
Typical current draw:
- 4-20 mA: (single) 4-22 mA, (dual) 8-44 mA
- Modbus (RS-485): 25 mA
Reverse polarity protection
Surge protection (output 4 only)

Programming

RS-485: optional RST-6001 USB to RS-485 converter
4-20 mA: factory set or optional RST-4100 programming module

Connectivity

Output:
- Single or dual loop-powered 4-20 mA
  - Set points:
    - 4 mA, probe bottom.
    - 20 mA, 6 in. below probe zero point or at customer specified point
- Modbus RTU (RS-485), optional temperature output

Physical

Housing: Cast aluminum, epoxy coated, blue
Stem: 0.5” Ø 316L SS
Stem Length: 1–12.75 ft. (0.3–3.9m)

Certifications

CSA:
- Rated 12-24 VDC; 4-20 mA or 80 mA; Ta 85°C
- Class I, Division 1 & 2, Groups C & D T4
- Ex d IIB T4
- Ex nA IIB T4
- Class I, Zone 1; AEx d IIB T4
- Class I, Zone 2; AEx nA IIB T4

Settler

Remote Monitoring Gateway
Part #: 125422

VIEW PRODUCT PAGE

RST-6001

Modbus Data Logging
Part #: 125734

Inquire with sales to purchase

What is the difference between the MPX-E and MPX-R models?

MPX-E: Lightweight and compact, making it ideal for tight spaces.
MPX-R: Features larger, more robust floats and stems, making it well-suited for harsh environments prone to fouling or buildup.

What is the MPX-E Explosion Proof Magnetostrictive Float Level Transmitter used for?

The MPX-E is designed for precise liquid level and interface measurement in hazardous environments. It is ideal for applications such as storage tanks, oil/water interface measurement, industrial effluent, and high-turbidity environments in industries like oil and gas, petrochemical, water treatment, and more.

What communication protocol does the MPX sensor use?

The MPX sensor utilizes Modbus RTU (RS-485 output), allowing seamless integration with any Modbus-compatible controller or PLC.

What industries commonly use the MPX-E?

Industries that benefit from the MPX-E include:

CI, D1 Hazardous Locations
Storage Tanks
Fuel Tanks
Oil/Water Interface Measurement
Industrial Effluent
Power Generation
Water & Wastewater Treatment
Biotech
Oil and Gas
Petrochemical
Chemical

What types of fluids can the MPX-E measure?

The MPX-E is designed for various fluids, including:

Storage and fuel tanks
Oil/water interface measurement
Thick, viscous, or sludgy fluids
Industrial effluent and wastewater

My signal is jumping. What can I do?

Increase the sensitivity settings on your sensor.

How can I change the Modbus address?

Here are the steps to get the sensor communication back as sensor #1 using the APG Modbus software and the RST-6001 (USB to RS485 converter).

It’s essentially the same process below to establish communication.

Establishing Communication:

On the APG Modbus software, go to Configure>Communication.
Make sure the USB box is checked; the Sensor Type is MPX-1/4 RS485 and the Sensor# ID is showing 1.
Click Save Configuration and then click Save.
Click on the Green “Start Communication” Button.

After communication has been established, use the second procedure to change the sensor address.

Here are the steps to follow to change the MPX-E4 address:

Establishing Communication:

On the APG Modbus software, go to Configure>Communication.
Make sure the USB box is checked; the Sensor Type is MPX-1/4 RS485 and the Sensor# ID is showing 1.
Click Save Configuration and then click Save.
Click on the Green “Start Communication” Button.

Changing the Sensor Address:

Change Register 400 from 1 to the desired address number.
Click Send. At this point, you will see a Comm Bad. That’s ok, go to Step 3.
Click again on Configure>Communication.
Change the Sensor ID from 1 to the new address number.
Click Save Configuration and then click Save.
Click on the Green “Start Communication” Button.

Your MPX-E4 should be communicating to the software with its new address.

MOUNT	Flange, No Mount, NPT
OUTPUT	4-20 mA, Modbus
CERTIFICATION	CSA – General, Explosion Proof
ENCLOSURE PROTECTION	IP65
INDUSTRY	Chemical, Food & Beverage, Industrial Automation, Oil & Gas, Water & Wastewater
PROBE LENGTH	1' – 12.5', 4' – 32'

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.