Bently Nevada 24701-34-05-20-018-03-02 Proximity Probe

Product Details

24701-34-05-20-018-03-02 Product Description

The Bently Nevada 24701-34-05-20-018-03-02 is an 8mm eddy-current proximity probe engineered for seamless deployment within the Bently Nevada 3300 XL vibration monitoring and machinery protection architecture. Designed to deliver continuous, high-fidelity radial and axial displacement measurements, this probe serves as the foundational sensing element in a layered industrial control system — bridging the physical machine layer with the signal conditioning, monitoring, and protection layers above it.

In modern turbomachinery and rotating equipment protection systems, the proximity probe is not a standalone component. It functions as the primary data source for the entire condition monitoring chain. The 24701-34-05-20-018-03-02 is factory-calibrated and system-matched to operate with Bently Nevada 3300 XL proximitor/seismic transducer modules, ensuring signal linearity, gap voltage accuracy, and sensitivity conformance across the full measurement range. This system-matched approach eliminates field calibration uncertainty and reduces commissioning time significantly.

The 24701-34-05-20-018-03-02 proximity probe achieves its full performance potential when deployed as part of a coherent Bently Nevada 3300 XL system architecture. At the signal conditioning layer, the probe pairs directly with the Bently Nevada 330180 proximitor/seismic transducer, which provides the regulated -24 VDC bias supply and converts the raw eddy-current signal into a calibrated DC voltage output. This output feeds into the Bently Nevada 3300/16-13-01-00-00-00-00 16-channel monitor housed within the 3300 XL rack, where vibration, position, and phase reference data are processed in real time.

At the rack and backplane layer, the Bently Nevada 3300/05-01-01-00-00-00 rack provides the structural and electrical backbone, distributing power and communication signals across all installed monitor modules. The Bently Nevada 3300/20-01-01-00-00-00 power supply module ensures stable, redundant DC power delivery to the entire monitoring system, supporting continuous operation even during single-supply fault conditions.

For communication and integration with the plant DCS or SCADA layer, the Bently Nevada 3500/92-01-01-00 communication gateway (or equivalent 3300 XL communication interface) enables Modbus, Profibus, or OPC-based data exchange with upstream control platforms such as GE Automation Series 90 PLCs or Emerson DeltaV DCS systems. This ensures that vibration and displacement data captured by the 24701-34-05-20-018-03-02 probe is available system-wide for process interlocks, alarm management, and predictive maintenance workflows.

At the HMI and visualization layer, System 1 Evolution software (Bently Nevada's condition monitoring platform) aggregates probe data across multiple measurement points, enabling trend analysis, orbit plots, and Bode diagrams that support both real-time protection and long-term asset health management. Integration with Bently Nevada 3300 XL keyphasor modules further enhances rotational speed reference accuracy, enabling phase-referenced vibration analysis critical for balancing and alignment diagnostics.

For installations requiring signal isolation or long cable runs in electrically noisy environments, signal isolator modules compatible with the 3300 XL analog output chain can be inserted between the proximitor output and the monitor input, preserving signal integrity across the full measurement bandwidth. The modular architecture of the 3300 XL system also supports future expansion with additional Bently Nevada 3300 XL temperature monitor modules and dynamic pressure monitor modules, allowing the control cabinet to grow with evolving machinery protection requirements without requiring a complete system redesign.

The Bently Nevada 24701-34-05-20-018-03-02 proximity probe is deployed across a wide spectrum of heavy industrial environments where rotating machinery protection is mission-critical:

Power Generation: In gas turbine and steam turbine protection systems at power plants, this probe monitors shaft radial displacement at journal bearings, providing the primary trip signal for overvibration protection. Its high-temperature rating makes it suitable for installation in close proximity to hot turbine casings.

Oil & Gas / Petrochemical: Centrifugal compressors, expanders, and boiler feed pumps in refinery and LNG processing facilities rely on 3300 XL-based protection systems. The 24701-34-05-20-018-03-02 provides the continuous shaft position data required for API 670 compliance, ensuring machinery protection systems meet international safety standards.

Water & Wastewater Treatment: Large vertical pump stations and blower systems in municipal water treatment facilities use proximity probes to detect bearing wear and shaft misalignment before catastrophic failure, reducing unplanned downtime and maintenance costs.

Mining & Minerals Processing: Ball mills, SAG mills, and large conveyor drive systems in mining operations benefit from continuous vibration monitoring. The robust construction of the 24701-34-05-20-018-03-02 withstands the high-vibration, dusty environments typical of mineral processing plants.

Marine & Offshore: Shipboard propulsion systems, diesel generator sets, and offshore platform compressor trains require compact, reliable proximity sensing solutions. The 3300 XL system's modular architecture and the probe's wide temperature range support marine classification society requirements.

Metallurgy & Steel: Rolling mill drives, continuous casting equipment, and large induction furnace cooling pumps in steel plants operate under extreme thermal and mechanical stress. Proximity-based shaft monitoring provides early warning of bearing degradation, enabling planned maintenance outages rather than emergency shutdowns.

Q1: Is the 24701-34-05-20-018-03-02 directly compatible with existing 3300 XL monitor racks without additional calibration?Yes. The 24701-34-05-20-018-03-02 is factory-calibrated and system-matched to the Bently Nevada 3300 XL proximitor/seismic transducer series. When paired with the correct 330180 proximitor and installed within the specified gap range, no field calibration is required. The probe, extension cable, and proximitor are supplied as a matched set to ensure sensitivity and linearity conformance per Bently Nevada system specifications.

Q2: What redundancy options are available when integrating this probe into a critical machinery protection architecture?The 3300 XL architecture supports dual-probe redundancy configurations at critical measurement points. Two probes can be installed 90° apart (X-Y configuration) to provide full orbital shaft motion data and enable voting logic within the monitor module. The 3300 XL rack also supports redundant power supply modules and communication paths, ensuring that a single component failure does not compromise the protection system's ability to issue trip signals. This architecture is fully compliant with API 670 redundancy requirements for critical rotating machinery.

Q3: What does the 12-Month Warranty cover, and how does NANKMOS support long-term inventory availability for this part?All units supplied by NANKMOS carry a 12-Month Warranty covering manufacturing defects, calibration conformance, and electrical performance under normal operating conditions. Each unit undergoes pre-shipment functional testing to verify gap voltage output, sensitivity, and cable integrity before dispatch. NANKMOS maintains dedicated inventory of Bently Nevada 3300 XL series components to support both immediate replacement requirements and long-term maintenance contracts. For planned outages or multi-unit projects, advance inventory reservation is available. Contact [email protected] or +86 18359268345 for availability and lead time confirmation.