Description

Technical Overview

The Bently Nevada 330101-40-60-05-02-05 is a high-precision, ruggedized proximity probe engineered for mission-critical shaft vibration and position monitoring in rotating machinery. As part of the industry-standard 3300 XL 8 mm Proximity Probe System, this model delivers exceptional linearity, thermal stability, and electromagnetic interference (EMI) immunity—essential for reliable operation in harsh industrial environments such as power generation, oil & gas, petrochemical, and heavy manufacturing facilities.

Designed for seamless integration with Bently Nevada 3300 XL monitoring systems—including the 3300/16, 3300/22, and 3300/25 monitors—the probe features a stainless steel housing, hermetically sealed construction, and optimized eddy-current sensing technology. Its calibrated 8 mm diameter active area ensures accurate gap measurement across a standard linear range of 2.0 mm (0.08 in), with minimal sensitivity to target material variations (e.g., 4140 steel or Inconel). The probe’s low-noise output and wide operating temperature range (–30°C to +120°C) support continuous, real-time health assessment of critical assets like steam turbines, compressors, and large motors.

Detailed Specifications

• Model Number: 330101-40-60-05-02-05
• Brand: Bently Nevada (a Baker Hughes business)
• Type: 3300 XL 8 mm Proximity Probe
• Probe Diameter: 8 mm (0.315 in)
• Linear Range: 2.0 mm (0.08 in)
• Sensitivity: 7.87 V/mm (200 mV/mil) ±5%
• Null Point: 1.0 mm (0.04 in) from tip to target surface
• Operating Temperature: –30°C to +120°C (–22°F to +248°F)
• Environmental Rating: IP67 (dust-tight and water-resistant)
• Housing Material: 316 stainless steel
• Cable Length: 5.0 meters (standard, integral coaxial cable)
• Connector Type: 3300 XL-compatible TNC male
• Target Material Calibration: 4140 steel (standard); optional calibrations available

Operational Capabilities

The 330101-40-60-05-02-05 excels in demanding condition monitoring applications where accuracy, repeatability, and long-term reliability are non-negotiable. It supports simultaneous measurement of shaft vibration (AC), radial position (DC), and dynamic motion signatures—enabling advanced diagnostics such as orbit analysis, bump testing, and transient event capture. Its low-phase-shift response (<1° up to 10 kHz) ensures fidelity in high-frequency vibration detection, while built-in EMI shielding maintains signal integrity near VFDs, switchgear, and high-current bus ducts.

When paired with a 3300 XL extension cable and monitor, the probe enables full system calibration traceable to NIST standards. Its robust mechanical design withstands high shock (500 g) and continuous vibration (50 g RMS), making it ideal for retrofitting legacy machinery or deploying in new-build critical-path instrumentation packages. Additionally, the probe complies with API RP 670 (4th ed.) and ISO 10816-3 for machinery vibration severity assessment.

Technical FAQ

Q: Is the 330101-40-60-05-02-05 compatible with legacy 3300 non-XL monitors?

A: No. This probe is specifically designed for the 3300 XL system architecture and requires an XL-series monitor and extension cable. Using it with older 3300 non-XL hardware will result in inaccurate scaling and potential system alarms.

Q: Can this probe be used on non-ferrous targets like aluminum or titanium?

A: Yes—but only with proper recalibration. Standard calibration is for 4140 steel. For non-ferrous or exotic alloys, Bently Nevada recommends factory recalibration to maintain specified linearity and sensitivity.

Q: What is the recommended mounting torque for the probe’s threaded body?

A: The standard M10 × 1.0 thread requires a mounting torque of 10–12 N·m (89–106 in-lb). Over-torquing may deform the probe tip or compromise sealing integrity.

Contact us for bulk pricing and availability