330901-00-08-05-02-CN Bently Nevada 1/4-28 UNF Probe

Product Overview

The Bently Nevada 330901-00-08-05-02-CN is a specialized 3300 NSv (Narrow System) proximity probe engineered for applications where extremely limited spatial clearance prevents the use of standard sensors. This Made in U.S.A. transducer excels at providing high-accuracy eddy-current measurements for shaft vibration and axial position. This configuration is distinguished by its 0.8-inch overall case length and 1/4-28 UNF thread, making it one of the most compact options in the series. The unit carries a net weight of approximately 0.15 kg (0.33 lbs), allowing for a low-mass installation that does not compromise industrial durability.

Core Technical Advantages

The technical design of the 330901-00-08-05-02-CN supports a wide frequency response reaching 20 kHz, enabling the capture of high-speed vibrational data across diverse operational states. Its FEP-insulated coaxial cable provides a dielectric strength of 500V AC, ensuring signal integrity in high-EMI industrial environments. Furthermore, this specific model is optimized for the CN market, meeting regional explosive atmosphere standards and environmental testing requirements, ensuring safe operation in hazardous oil and gas or power generation facilities.

Technical Specifications

Installation & Environmental Resilience

Maintaining signal stability is critical, which is why this 3300 NSv series probe utilizes the ClickLoc® connector system. This provides a secure, vibration-proof link to the extension cable that prevents moisture ingress and signal drift. Despite its small 0.8-inch footprint, the probe is built for resilience, operating effectively in temperatures ranging from -40°C to 100°C. For optimal performance, the case should be tightened to a recommended torque of 5.1 N•m (45 in•lb) to ensure it remains seated during high-vibration events.

Engineering Advantages

The primary advantage of the 330901-00-08-05-02-CN is its narrow "view" geometry, which eliminates side-viewing interference that often plagues larger probes in cramped housings. This allows it to deliver a linear output even when sensing small targets or when mounted close to bearing edges. By providing high-resolution data on shaft dynamics, it supports predictive maintenance programs that help operators identify bearing wear or misalignment before they lead to costly equipment failure.

Technical FAQs

Q1: What does the "08" in the model code signify?
A1: The "08" indicates an overall case length of 0.8 inches, specifically designed for shallow mounting applications where space is extremely limited.

Q2: Is this probe compatible with standard 8mm Proximitor sensors?
A2: No. This probe must be paired with a dedicated 3300 NSv Proximitor Sensor to ensure accurate calibration and linear scale factors.

Q3: Does this CN-certified version differ physically from the standard version?
A3: Physically, the dimensions remain the same; however, the "CN" designation ensures it has been tested and certified to meet specific regional regulatory standards for safety and environmental compliance.