APG IRU-2420 Non-contact water level sensor

The IRU-2420 provides a non-contact method of detecting level, presence/absence detection, volume, proximity and distance. With built in technology to compensate for unpredictable variables such as humidity, temperature and agitators, the IRU is the right sensor for your application.

Hazardous Location Certified
IRU-2420 ultrasonic sensors are suitable for hazardous locations classified under CSA Class 1, Div. 2.

Flexible Programming
This series of ultrasonics was designed with flexibility in mind. It features our AutoSense software for quick and easy programming in a variety of application settings.

A Good Fit
With a 25 ft. range, a 2 in. NPT fitting, and a 4-20mA output, the IRU-2420 sensors work well for many tank level applications.


  • AutoSense Software for hassle-free setup
  • Internal temperature compensation
  • Works on solids and liquids

Technical Specifications


Operating range1 - 25 ft. (0.3 - 7.6 m)
Beam pattern9º off axis
Frequency69 kHz
Accuracy±0.25% of detected range
Resolution0.1 in. (2.5 mm)
Response timeProgrammable (20 ms minimum)


Output4-20 mA
600 ohms @ 24 VDC
150 ohms @ 12 VDC
4-20 mA with (2) NPN outputs


Operating temp-40º to 140ºF (-40º to 60ºC)


Total current draw75 mA @ 24 VDC
Supply voltage12-28 VDC
Wiring connection4 or 5 conductor shielded cable


MaterialsPVDF (Kynar®) transducer housing
PC/PET upper housing
Transducer typeCeramic, PVDF faced


Download Stevens'
Product Catalog

Enter your name and email address to receive a link to the PDF version of the Stevens Product Catalog. You will be subscribed to the Stevens Water newsletter (you can unsubscribe any time).

Product Catalog download

Shop Online / Inquire

Need more information? We’re here to help!​

Tell us a bit about yourself and your question and we’ll get back to you ASAP.

General inquiry