MADISON Noncontact Ultrasonic Level Sensor: 1 in NPT, 1 in Antenna Dia, 6 ft Range
The MADISON Noncontact Ultrasonic Level Sensor (MPN U3M-148R) is an ultrasonic liquid level sensor transmitter with a 1 in NPT connection, 1 in antenna diameter, and a 6 ft range. It operates on 30V DC with a 4 to…
SKU 3G-OTH-91747
Need installation or engineering help?
Ask a question
Product Description
The MADISON Noncontact Ultrasonic Level Sensor (MPN U3M-148R) is an ultrasonic liquid level sensor transmitter with a 1 in NPT connection, 1 in antenna diameter, and a 6 ft range. It operates on 30V DC with a 4 to 20mA output voltage range and offers accuracy of +/-0.25% of Full Scale. The sensor is constructed from PVC.
Frequently Asked Questions
What is the MADISON U3M-148R ultrasonic level sensor used for?
The MADISON U3M-148R noncontact ultrasonic level sensor measures liquid level in tanks or vessels without contacting the fluid. It is used in water, wastewater, chemical processing, and industrial fluid management where reliable, maintenance-free level measurement is needed.
What are the specifications of the MADISON U3M-148R ultrasonic level sensor?
The MADISON U3M-148R operates on 30V DC with a 4 to 20mA output. It has a 1 in NPT connection, 1 in antenna diameter, and a 6 ft range. Accuracy is +/-0.25% of Full Scale. The housing is PVC. Part number U3M-148R.
Where to buy the MADISON U3M-148R ultrasonic level sensor worldwide?
3G Electric supplies the MADISON U3M-148R ultrasonic level sensor to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this noncontact level transmitter.
How to install the MADISON U3M-148R ultrasonic level sensor?
Mount the MADISON U3M-148R vertically above the liquid surface with no obstructions in the beam path. Ensure the 1 in NPT fitting is sealed. Wire the 30V DC supply and 4 to 20mA output per the manufacturer's diagram. Avoid foam or turbulence for accurate readings.
Used in
Common applications for MADISONMADISON Products
3G Electric supplies MADISON ultrasonic liquid level sensor transmitters. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.




