Ultrasonic Level Sensor
Modbus Ultrasonic Level Sensor - Image 2
Modbus Ultrasonic Level Sensor - Image 3
Modbus Ultrasonic Level Sensor - Image 4
Modbus Ultrasonic Level Sensor - Image 5
Modbus Ultrasonic Level Sensor
Modbus Ultrasonic Level Sensor
Ultrasonic Level Sensor
Modbus Ultrasonic Level Sensor
Modbus Ultrasonic Level Sensor

Modbus Ultrasonic Level Sensor

MNU

Modbus Flexibility Meets High Performance Ultrasonic

The MNU Modbus Ultrasonic Level Sensor offers unmatched versatility and high-performance monitoring, ideal for any situation requiring Modbus compatibility. It seamlessly integrates with Modbus controllers or PLCs using an RS-485 Modbus RTU output for level and flow monitoring. This full-featured ultrasonic sensor is easy to wire and set up, offering simple daisy chain wiring and remote configuration via the Internet. The MNU sensor is built for applications like water and wastewater monitoring, sewer/lift stations, and tank monitoring. The sensor is compatible with Settler and Explorer monitoring applications and can be configured with a variety of common ultrasonic sensor models.

  • Ranges from 4 inches to 40 feet: The MNU sensor can measure distances over a wide range, from just 4 inches up to 40 feet.
  • Self-Contained Sensor: This sensor is fully integrated, meaning no additional components are required for installation.
  • RS-485 Modbus RTU Interface: It supports the Modbus RTU protocol, enabling easy integration with control systems via an RS-485 communication interface.
  • Measure Distance, Level, or Volume: The MNU sensor is versatile and can be used to measure distance, level, or volume in various applications.
  • Internal Temperature Compensation: The sensor has built-in temperature compensation, ensuring accurate readings despite temperature fluctuations.

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MNU
Installation Guide

Modbus Setup
Software Download
  • Operating Range:
    • 0.3 – 6.6 ft. / 4 in. – 79 in. / 101mm – 2007mm (54×4)
    • 0.42 – 12.0 ft. / 5 in. – 144 in. / 125mm – 3658mm (8424)
    • 1.0 – 25.0 ft. / 12 in. – 300 in. / 305mm – 7620mm (2424)
    • 1.5 ft. – 40 ft. / 18 in. – 480 in. / 458mm – 12192mm (3434)
  • Digital Output: Modbus, via RS-485
  • Beam Pattern: 9° off axis
  • Transducer Frequency: 43 kHz (3434) / 69 kHz (2424) / 81 kHz (8424) / 143 kHz (54×4)
  • Response Time: Programmable, 10 ms minimum (100 Hz)
  • Operating Temperature: -34 to 60°C (-30 to 140°F)
  • Internal Temperature Compensation: Yes
  • NEMA rating: 6P
  • Operational Supply Voltage (at sensor): 8-24 VDC
  • Current Draw:
    • 35 mA max @ 12 VDC
    • 20 mA max @ 24 VDC
  • Connection: 2 Twisted Pair, or 4-pin Micro Connector
  • Accuracy: ±0.25% of detected range
  • Resolution: 0.1 inch (2.54 mm)
  • Transducer Housing: PBT/Polycarbonate blend
  • Transducer Type:
    • Ceramic, PVDF faced (2424, 54×4, 8424)
    • Ceramic, PBT/Polycarbonate faced (3434)
  • MNU-2424: 2” Ø NPT (front), 3/4” Ø NPT (rear)
  • MNU-3434: 3” Ø NPT (front), 3/4” Ø NPT (rear)
  • MNU-5414: 1” Ø NPT (front), 3/4” Ø NPT (rear)
  • MNU-5424: 2” Ø NPT (front), 3/4” Ø NPT (rear)
  • MNU-8424: 2” Ø NPT (front), 3/4” Ø NPT (rear)
What is the MNU Modbus Ultrasonic Level Sensor used for?

The MNU sensor is designed for level and flow monitoring applications that require Modbus compatibility. It is commonly used in water and wastewater management, sewer/lift stations, and tank monitoring.

The sensor uses an RS-485 Modbus RTU output, allowing seamless integration with Modbus controllers and PLCs for real-time data transmission and monitoring.

We offer several MNU models, including:

  • MNU-2424-C6 – 1-25 ft. range, 69 kHz frequency, 2″ NPT, 6 ft. cable
  • MNU-3434-C6 – 1.5-40 ft. range, 43 kHz frequency, 3″ NPT, 6 ft. cable
  • MNU-8424-C6 – 5-144 in. range, 81 kHz frequency, 2″ NPT, 6 ft. cable

Yes, the MNU sensor is designed to operate in temperatures ranging from -30°F to 140°F.

The MNU sensor stands out due to its Modbus RTU compatibility, remote configuration capabilities, easy daisy chain wiring, high accuracy, and rugged NEMA 6P-rated design, making it an ideal choice for industrial applications.

OUTPUT

Modbus
RANGE

1' – 15', 1' – 25', 1' – 30', 16' – 30', 4" – 40'
MOUNT

1", 2", 3", 3/4"
INDUSTRY

Chemical, Food & Beverage, Industrial Automation, Marine, Oil & Gas, Water & Wastewater
ENCLOSURE PROTECTION

NEMA 6P

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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