Built to last
Customers who rely on mission-critical machinery choose our proximity probe sensors to monitor machine conditions and protect important equipment assets. We have many sensor types available for your object detection and temperature range needs. Whether you are looking for inductive proximity sensors, magnetic proximity sensors, ultrasonic proximity sensors, photoelectric sensors, or capacitive proximity sensors, these sensor types can help with object detection, automation, and robotics. Our high-speed products have a long service life as well. Here’s a look at our proximity sensor types.

Smaller probe diameters
The 3300 5mm Proximity Transducer System offers a smaller probe diameter while interfacing with XL 8mm extension cable and 5mm proximity sensor. The 3300 XL 8 mm system delivers the most advanced performance in our eddy current proximity transducer systems. The standard 3300 XL 8mm 5-meter system also fully complies with the American Petroleum Institute's (API) 670 Standard (4th Edition) for mechanical configuration, linear sensing range, accuracy, and temperature stability. Our 3300 XL 11 mm Proximity Transducer System is our standard eddy current proximity measurement system. It accommodates a variety of applications with a linear measurement sensing range of 4 mm (160 mil) and provides a 3.94 V/mm (100 mV/mil) output to measure vibration and displacement.

Larger probe diameters
Our 3300 XL 16mm High-Temperature Proximity System (HTPS) withstands extreme temperatures (rated for +350°C or +662°F). This high-temperature sensor is suitable for use inside gas turbines, steam turbines and other types of rotating machinery. The 3300 XL 25mm Proximity Transducer System provides an extended linear measurement range of 12.7 mm (500 mil) and is ideal for use in steam turbine TSI (Turbine Supervisory Instrumentation) systems. Our 3300 XL 50 mm Proximity Transducer System offers the longest linear measurement of all of our eddy current proximity sensor systems with a sensing range of 27.9 mm (1100 mil).

Sensors for challenging applications
When you need to monitor machinery in corrosive, chemical, or high-pressure environments, the 3300 XL Ceramic Capped Probe is your best choice. If your counterbore clearances are too small for standard Proximity Sensor and Transducer Systems, the 3300 XL NSv (narrow side view) Proximity Transducer System is here to help. 3300 XL underwater probes are designed specifically for applications involving constant exposure to liquids, such as those in hydroelectric plants or sewage treatment facilities. These designs also seal the probes against gases.

PROXPAC XL Proximity Transducer Assembly
Our 3300 PROXPAC† XL Transducer Assembly integrates our Proximitor sensor with a specially-designed probe housing to create a compact, self-contained, all-in-one proximity probe system. An advanced thermoplastic called Polyphenylene Sulfide (PPS) is molded with glass and conductive fibers to strengthen the housing and effectively dissipate the danger of electrostatic charges. The housing cover contains its own 3300 XL Proximitor sensor connector, thus eliminating the need for an extension cable. Rated Type 4X and IP66 – the 3300 PROXPAC XL provides extra protection in severe environments.
Industry-leading proximity sensor solutions that offer superior performance and interchangeability
When you use our proximity sensors as part of your plantwide monitoring program, your costs associated with insurance, maintenance, and unscheduled repairs will go down significantly.
Using our proximity sensors as part of your plantwide monitoring program, increases revenue through increased uptime and production quality. Our inductive sensors have a time-tested long service life.
The data collected from our sensor systems can help convert unplanned and costly outages into planned, manageable downtime.
Proximity probe system interchangeability - Don't build a "Frankenstein" system

From the very first days since we invented and pioneered the use of the eddy current Proximitor® probe in the late 1960’s, quality, reliability, and ease of use have been among our top priorities. That tradition, rooted in our passion for customer service, is still alive and well today. And it is no more apparent than it is with our commitment to full interchangeability with our Proximity probe systems.
For over 60 years, Bently Nevada has been a trusted brand for industrial condition monitoring

Over 60 years of experience
We have a rich history in helping customers solve industrial maintenance challenges that is over 60 years strong. Through user research in over 20 countries with more than 400 end users, we have studied our customer’s team dynamics, site processes, and technology suites to determine how we can best support plantwide asset health management.

The right expertise, service and support
When you need help, you need somebody responsive. Somebody knowledgeable. Somebody experienced. Somebody that speaks your language. And you need more than one way to reach them—chat, phone, email, Zoom.
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- 18,000+ machinery and diagnostics projects completed