Chemically Resistant Level Transmitter
Chemically Resistant Level Transmitter - Image 2
Chemically Resistant Level Transmitter
Chemically Resistant Level Transmitter - Image 4
Chemically Resistant Level Transmitter

Chemically Resistant Level Transmitter

MPX-E Chemical

PVDF Float and Stem for use in Hostile Chemical Environments

The MPX-E Chemical Level Transmitter is designed with a chemically resistant PVDF float and stem to provide precise level measurements in hostile chemical environments. It is ideal for use in corrosive, acidic, and marine environments, including sulfuric acid, boric acid, hydrochloric acid, and sodium hydroxide. This durable transmitter features Modbus RTU output (RS-485), ensuring compatibility with any Modbus controller or PLC, and simplifying wiring. It also offers compatibility with sensors, and can connect to the Internet with the addition of Settler and Explorer platform.

  • Low-Level Fuel-Water Interface Detection: Utilizes high-precision technology to accurately detect minimal fuel and water levels, ensuring reliable interface measurement in tanks and industrial systems.
  • Chemical Resistance: PVDF stem and float withstand harsh chemicals like sulfuric acid, boric acid, hydrochloric acid, and sodium hydroxide.
  • Modbus Output: RS-485 Modbus RTU for easy integration with Modbus controllers or PLCs.
  • Remote Monitoring Compatibility: Works with Settler and Explorer for remote monitoring capabilities.
  • Durable Construction: Built to endure corrosive, acidic, and marine environments.

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MPX-E Chemical Datasheet
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MPX-E Chemical User Manual
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MPX-E Chemical Install Guide
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ModBus Software Download
  • 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
  • Probe Operating Temperature: -40º–85ºC (-40º–185ºF)
  • Float Maximum Operating Pressure: 30PSIA @ 70°F / 21°C
  • IP65
  • Electrical Connection: Terminal Block, 12–24 VDC
  • Typical current draw:
    • 4-20 mA: 4-22 mA
    • Modbus (RS-485): 25 mA
  • Reverse polarity protection: Yes
  • Surge protection: Output 4 only
  • RS-485: Optional RST-6001 USB to RS-485 converter
  • 4-20 mA: Factory set or optional RST-4100 programming module
  • Output:
    • 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
  • Housing: Cast aluminum, epoxy coated
  • Stem: 0.67” Ø PVDF (rigid)
  • Stem Length: 1–12.75 ft. (0.3–3.9m)
  • Float: 2″ Ø PVDF, 0.65 SG or 0.94 SG
  • 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
What makes the MPX-E Chemical Level Transmitter suitable for harsh chemical environments?

The MPX-E is designed with a PVDF (polyvinylidene fluoride) float and stem, which provide exceptional resistance to corrosive chemicals such as sulfuric acid, boric acid, hydrochloric acid, and sodium hydroxide. Its durable construction ensures reliable operation in hostile chemical and marine environments.

The MPX-E features an RS-485 Modbus RTU output, making it compatible with any Modbus-based controller or PLC. This simplifies wiring and allows for seamless integration into existing monitoring and control systems.

Yes, the MPX-E is compatible with level and flow sensors. It can also be connected to the Internet when used with an LOE Master sensor or RST-5003 module, enabling remote monitoring and data logging.

The MPX-E is ideal for applications that involve:

  • Corrosive chemicals
  • Marine (saltwater) environments
  • Hazardous locations (Class I, Division 1 & 2)
  • Sulfuric, boric, and hydrochloric acids
  • Sodium hydroxide

To enable Internet connectivity, the MPX-E can be paired with an LOE Master sensor or an RST-5003 module, allowing for remote data access and monitoring.

Increase the sensitivity settings on your sensor.

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:

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

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

 

Changing the Sensor Address:

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

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

MOUNT

NPT
OUTPUT

4-20 mA, Modbus
CERTIFICATION

CSA – General, Explosion Proof
ENCLOSURE PROTECTION

IP65
INDUSTRY

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

1' – 12.5'

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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