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SKU: 330103-00-04-10-02-00

Bently Nevada 330103-00-04-10-02-00 3300 XL 8mm Proximity Probe

The Bently Nevada 330103-00-04-10-02-00 is a 3300 XL 8mm proximity probe featuring a 3/8-24 UNF thread and a 1.0-meter cable. It provides high-accuracy, non-contact vibration and position sensing for critical machinery protection in temperatures ranging from -52°C to +177°C.

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Technical Function and System Role

The Bently Nevada 330103-00-04-10-02-00 operates as a high-precision eddy current sensor within the 3300 XL 8mm Proximity Transducer System. This probe measures the microscopic distance between its tip and a rotating shaft, allowing the 3500 Monitoring System to track radial vibration and axial position. Because the sensor utilizes non-contact technology, it eliminates mechanical wear while providing continuous, high-speed data for machinery protection. Consequently, this probe enables operators to detect early signs of bearing failure or shaft instability before catastrophic damage occurs.

Detailed Configuration Specifications

  • Brand: Bently Nevada
  • Part Number: 330103-00-04-10-02-00
  • Probe Type: 3300 XL 8mm Proximity Probe
  • Thread Type: 3/8-24 UNF English Thread
  • Unthreaded Length: 0.0 inches
  • Overall Case Length: 0.4 inches
  • Total Cable Length: 1.0 meter
  • Connector Option: Miniature coaxial ClickLoc connector with connector protector
  • Agency Approval: No approvals required for this specific configuration
  • Linear Range: 2.0 mm (80 mils)
  • Operating Temperature: -52°C to +177°C

Industrial Benefits and Performance Characteristics

Maintenance engineers choose the 330103-00-04-10-02-00 for its exceptional stability in extreme thermal environments. The probe tip features a polyphenylene sulfide (PPS) construction that resists chemical corrosion and moisture ingress, ensuring long-term reliability in harsh industrial settings. Furthermore, the 3300 XL series offers an improved signal-to-noise ratio compared to previous generations. This precision allows for more accurate diagnostics in:

  • Steam turbine radial vibration monitoring
  • Centrifugal compressor thrust position tracking
  • Gas turbine shaft alignment and eccentricity
  • High-speed pump bearing health assessment

Installation and System Integration

Successful deployment requires that the user matches the total electrical length of the probe and extension cable to the Proximitor Sensor’s calibration—typically 5.0 or 9.0 meters. Because this specific probe features a 1.0-meter lead, the technician must pair it with a 4.0-meter or 8.0-meter extension cable. Additionally, the included connector protector (02 option) prevents oil and environmental contaminants from grounding the coaxial connection. This protective measure ensures that the monitoring system receives a clean, undistorted signal for advanced vibration analysis and predictive maintenance.

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Technical Overview

The Bently Nevada 31000-16-10-15-030-03-02 is a specialized proximity probe housing designed to physically protect a proximity probe and its integral cable within harsh industrial environments. Its primary function is to provide a secure, environmentally sealed mounting point on rotating machinery for acquiring critical vibration and position data. The housing is constructed from 304 Stainless Steel, offering robust protection against physical impact and corrosion. This specific configuration, 31000-16-10-15-030-03-02, features a 3/4-14 NPT external mounting thread for direct installation into a machine case. Internally, it accommodates a Bently Nevada 3300 XL 8 mm or 3300 5 mm probe, which is positioned by a 1.0-inch stinger (probe sleeve). The housing facilitates the signal path from the probe tip to the Bently Nevada 3500 Monitoring System. The probe, connected via an extension cable to a Proximitor Sensor, generates a high-frequency RF signal. The resulting eddy current field is used to measure the distance to the observed conductive target. The Proximitor Sensor conditions this signal into a calibrated DC voltage proportional to the gap, which is then transmitted to a 3500/42M Proximitor/Seismic Monitor module for analysis, alarming, and machinery protection.

Detailed Specifications

ParameterSpecification
ManufacturerBently Nevada
Part Number31000-16-10-15-030-03-02
Product Type31000 Proximity Probe Housing
ConditionBrand New
Warranty12 Months
Housing Material304 Stainless Steel
Mounting Thread3/4-14 NPT
Stinger (Probe Sleeve) Length1.0 inch (25.4 mm)
Probe CompatibilityBently Nevada 3300 XL 8 mm and 3300 5 mm Proximity Probes
Environmental SealingViton O-ring cable seal included
Operating Temperature Range-34 °C to +177 °C (-30 °F to +350 °F)
Hazardous Area SuitabilitySuitable for Class I, Div 2 / Zone 2 locations when installed per Bently Nevada control drawings and with appropriately certified system components.

Operational Capabilities

In Oil & Gas applications, the 31000-16-10-15-030-03-02 housing provides essential protection for transducers monitoring centrifugal and reciprocating compressors, pumps, and gearboxes. Its 304 Stainless Steel construction and Viton seals ensure long-term integrity in environments containing corrosive elements such as H2S and hydrocarbons, a critical requirement for meeting API 670 standards for machinery protection systems. In Power Generation, this housing is extensively used on steam and gas turbines, exciters, and boiler feed pumps. It maintains measurement accuracy and reliability under conditions of high temperature and vibration, which is fundamental for monitoring shaft radial vibration, axial thrust position, and differential expansion. The passive mechanical design results in a high Mean Time Between Failures (MTBF), contributing to overall plant availability. When properly installed, the housing assembly provides an environmental rating equivalent to NEMA 4X and IP65, preventing ingress of dust, moisture, and process contaminants that could otherwise compromise signal integrity

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330703-00-100-10-11-CN | Bently Nevada | 3300 XL 11 mm Proximity Probes

330703-00-100-10-11-CN | Bently Nevada | 3300 XL 11 mm Proximity Probes

Technical Overview

The Bently Nevada 330703-00-100-10-11-CN is an 11 mm eddy current proximity probe designed for non-contact displacement and vibration measurement on rotating machinery. It functions as a core component of the 3300 XL 11 mm Transducer System, which also includes a matched extension cable and a 3300 XL 11 mm Proximitor Sensor. The system operates on the eddy current principle, where the Proximitor Sensor emits a high-frequency radio frequency (RF) signal through the probe and extension cable. This signal radiates from the probe tip, creating an electromagnetic field. When a conductive target, such as a machine shaft, enters this field, eddy currents are induced on its surface. These currents create a secondary magnetic field that opposes the primary field, causing a measurable change in the RF signal's impedance. The Proximitor Sensor demodulates this signal to produce a DC voltage directly proportional to the gap between the probe tip and the target surface. This analog voltage signal is then transmitted to a monitoring system, such as the Bently Nevada 3500 series, for real-time analysis of radial vibration, axial position, and shaft speed. The 330703-00-100-10-11-CN features a robust stainless steel case and a chemically resistant Polyphenylene Sulfide (PPS) tip, ensuring reliability in harsh industrial environments.

Detailed Specifications

ParameterSpecification
ManufacturerBently Nevada
Part Number330703-00-100-10-11-CN
Product Type3300 XL 11 mm Proximity Probe
ConditionBrand New
Warranty12 Months
Linear Range4.0 mm (160 mils)
Scale Factor2.00 mV/µm (50 mV/mil) ± 6.5%
Total Length1.0 metre
Probe Tip MaterialPolyphenylene Sulfide (PPS)
Probe Case MaterialAISI 304 Stainless Steel
Connector TypeMiniature coaxial ClickLocâ„¢ connector, gold-plated
Agency ApprovalCN Ex (China Ex) for hazardous area installations

Operational Capabilities

The 330703-00-100-10-11-CN proximity probe is engineered for high reliability in demanding industrial applications, particularly within Oil & Gas and Power Generation sectors. Its 11 mm tip provides a larger linear measurement range and is well-suited for monitoring large shaft diameters or applications requiring a greater standoff distance. The probe's construction ensures operational integrity across a wide temperature range, with the probe tip rated for -51 °C to +177 °C (-60 °F to +351 °F). The 3300 XL system design provides enhanced immunity to radio frequency interference (RFI/EMI), minimizing the risk of signal corruption from nearby motors, generators, or radio sources. The gold-plated ClickLoc™ connector ensures a secure, corrosion-resistant connection that prevents intermittent signals caused by vibration. When installed and maintained according to manufacturer specifications, the system demonstrates high Mean Time Between Failures (MTBF) and is a critical component for machinery protection systems (MPS) and condition monitoring programs, compliant with standards such as API 670.

Applications

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  • Large electric motors and generators
  • Gearboxes and other industrial rotating machinery with fluid-film bearings
  • Integration into predictive maintenance and machinery protection systems (MPS)
  • Axial (thrust) position and radial vibration monitoring

Technical FAQ

Q: What systems is the 330703-00-100-10-11-CN compatible with?
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Q: What are the installation requirements?
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