Bently Nevada 330525-01 3300 XL NSv Proximity Transducer

The 330525-01 is a high-precision 3300 XL NSv™ (Narrow Side View) Proximitor® Sensor. This specialized eddy current sensor is designed for applications where standard 8mm or 5mm probes are unsuitable due to tight mounting clearances or small target diameters (less than 13 mm / 0.5 in). The NSv series is specifically engineered to “see” a smaller area of the target material, making it the industry standard for monitoring vibration and radial position on small centrifugal compressors, pumps, and high-speed turbochargers with small shafts.

Detailed Specifications

Operational Capabilities

The 330525-01 Proximitor Sensor is the “brains” of the transducer system. It provides the excitation voltage to the probe and processes the return signal into a linear voltage output proportional to the distance between the probe tip and the shaft. The NSv technology minimizes “side-viewing” interference, which is critical when a probe must be installed near a bearing housing wall or other metallic obstructions. The -01 suffix designates a 5.0-meter total system length, meaning the combined length of the probe and extension cable must equal 5 meters for calibrated accuracy.

Technical FAQ

Can I use a standard 3300 XL 8mm probe with this NSv Proximitor?

No. The 330525-01 must be used specifically with 3300 XL NSv probes (330901 or 330902). Using a standard 8mm probe will result in incorrect scale factors and non-linear data.

What is the benefit of the 5.0-meter system?

The 5.0-meter system length allows for greater distance between the machine-mounted probe and the control cabinet where the Proximitor is housed, providing installation flexibility in large plant environments without losing signal integrity.