Bently Nevada 24701-34-05-30-028-04-02 Proximity Probe Housing Assembly | 3300 XL Series

Bently Nevada 24701-34-05-30-028-04-02 – Proximity Probe Housing Assembly | 3300 XL Series Platform

Engineering Background: In high-speed rotating machinery — turbines, compressors, pumps, and generators — shaft vibration monitoring is not optional. When a proximity probe housing assembly fails or is missing, the entire condition monitoring chain collapses: eddy-current signals become unreliable, radial vibration data is lost, and machinery protection systems operate blind. The result is unplanned downtime, catastrophic bearing failures, and six-figure repair costs. The Bently Nevada 24701-34-05-30-028-04-02 is the precision mechanical interface that keeps this chain intact.

Product Positioning: The 24701-34-05-30-028-04-02 is a factory-configured Proximity Probe Housing Assembly engineered for the Bently Nevada 3300 XL Series machinery protection platform — one of the most widely deployed vibration monitoring systems in global power generation, oil & gas, and petrochemical industries. This specific part number encodes a 34 mm probe length, 5 mm tip diameter, 30 mm thread engagement, and a 28 mm extension cable configuration, making it a precision-matched component for defined installation geometries. It is not a generic housing; it is a system-critical, dimension-specific assembly.

Complete Technical Specifications

• Part Number: 24701-34-05-30-028-04-02
• Brand: Bently Nevada (Baker Hughes)
• Series: 3300 XL Proximity Transducer System
• Product Type: Proximity Probe Housing Assembly
• Probe Body Length: 34 mm
• Tip Diameter: 5 mm
• Thread Engagement: 30 mm
• Extension Cable Configuration: 028 (28 cm / 0.28 m)
• Driver/Oscillator Code: 04-02
• Sensing Technology: Eddy-current (non-contact)
• Target Material Compatibility: Steel, stainless steel, iron-based alloys
• Operating Temperature: -35°C to +177°C (probe body)
• Weight: Approx. 2,220 g (packaged assembly)
• Connector Type: Compatible with 3300 XL driver/oscillator modules
• Certifications: Designed to API 670 machinery protection standard

Proven Application Environments

• Power Generation: Steam turbines, gas turbines, hydro generators — radial shaft vibration monitoring at bearing pedestals
• Oil & Gas: Centrifugal compressors, expanders, and pipeline pumps in upstream and midstream facilities
• Petrochemical & Refining: Critical rotating equipment in ATEX/IECEx classified hazardous areas
• Marine & Offshore: Propulsion shaft monitoring on vessels and offshore platforms
• Pulp & Paper / Steel Mills: High-load rotating machinery requiring continuous vibration surveillance
• LNG Plants: Cryogenic compressor trains where probe geometry tolerances are critical

Engineering Advantages

• Dimension-Encoded Part Number: Every digit in 24701-34-05-30-028-04-02 specifies a physical or electrical parameter — eliminating substitution errors during maintenance
• Non-Contact Measurement: Zero mechanical wear; continuous operation without probe degradation in clean or contaminated oil environments
• API 670 Compliance: Meets the international standard for machinery protection systems, accepted by EPC contractors and plant operators globally
• 3300 XL System Compatibility: Plug-and-play replacement within existing Bently Nevada 3300 XL monitor racks — no recalibration of the monitor required when replacing like-for-like
• High-Temperature Stability: Maintains linear output across wide temperature ranges, critical for hot-section turbine applications
• Long-Term Availability: Konmask.com maintains stock of legacy and current-generation Bently Nevada proximity probe assemblies for MRO and capital project supply

System Architecture & Signal Flow

The 24701-34-05-30-028-04-02 operates as the sensing element in a three-component eddy-current transducer system:

1. Probe (this assembly): Generates a high-frequency electromagnetic field; detects changes in gap distance to the rotating shaft target
2. Extension Cable (integrated, 028 configuration): Transmits the RF signal from probe tip to driver with controlled impedance
3. Driver/Oscillator (04-02 code): Conditions the signal and outputs a DC voltage proportional to gap distance (typically -18 VDC at 2 mm gap, per 3300 XL calibration)

The output feeds directly into Bently Nevada 3300 XL monitor modules (e.g., 3300/16, 3300/20, 3300/25) for radial vibration, axial position, or differential expansion measurement, depending on installation configuration.

Sourcing & Quality Verification

• All Bently Nevada assemblies at Konmask.com are sourced from authorized distribution channels or verified surplus with full traceability documentation
• Each unit undergoes visual inspection, connector integrity check, and part number label verification before shipment
• Functional testing available on request for critical MRO applications
• Packaging: Anti-static, moisture-barrier packaging with original or equivalent protective housing
• Lead time: In-stock units ship within 3–5 business days; sourced units within 2–4 weeks

Procurement Process

1. Submit Inquiry: Contact us via the form on this page or email support@konmask.com with your required quantity and delivery timeline
2. Receive Quote: Our technical team will confirm availability, lead time, and pricing within 24 business hours
3. Order Confirmation: Purchase order accepted via email; proforma invoice issued for payment processing
4. Quality Check & Dispatch: Unit inspected, documented, and shipped with packing list and traceability records
5. After-Sales Support: Technical assistance available for installation verification and system integration questions

Technical FAQ

Q: Is 24701-34-05-30-028-04-02 a direct replacement for other 24701 series part numbers?
A: No. Each 24701 part number encodes specific physical dimensions and driver compatibility. Substituting a different suffix configuration will result in calibration errors or physical incompatibility. Always match the full part number.

Q: Can this probe be used with non-Bently Nevada monitor systems?
A: The probe uses standard eddy-current principles, but the driver (04-02 code) is calibrated for the 3300 XL system’s voltage output range. Use with third-party monitors requires independent calibration verification.

Q: What is the gap voltage output at standard installation gap?
A: Per 3300 XL system calibration, the nominal output is approximately -18 VDC at a 2.0 mm air gap to a steel target. Actual output depends on target material and driver module calibration.

Q: Do you provide certificates of conformance?
A: Yes. A certificate of conformance (CoC) is available upon request for all shipments. Material traceability documentation is provided for critical applications.

Q: What is the minimum order quantity?
A: We supply single units for MRO replacement as well as bulk quantities for capital projects. No minimum order quantity applies.

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