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- 3300 XL 25mm Proximity Probe
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Industrial Proximity Probe Extension Cable Assembly
Model: 330851-02-000-070-50-01-CN
1. Brand & Product Positioning
This model belongs to an industrial vibration monitoring and rotating machinery protection instrumentation system used for continuous condition monitoring of critical rotating equipment.
It is widely applied in power generation plants, oil and gas facilities, petrochemical refining units, and heavy industrial machinery environments where rotating assets operate under continuous load and harsh conditions.
The system is designed to measure shaft vibration, radial displacement, and axial movement in real time, enabling early detection of mechanical faults such as imbalance, misalignment, rotor instability, and bearing degradation.
The model code “330851” identifies the product family. The segment “070” indicates a 7.0 m cable length. The suffix “50-01-CN” defines connector configuration, shielding structure, and a regional specification variant.
The “CN” suffix typically indicates a localized production or labeling version while maintaining identical electrical and mechanical characteristics within the same global design platform.
2. Product Overview
This product is a proximity probe extension cable assembly used to transmit low-level eddy current signals between a proximity probe and a monitoring system.
It is a critical component in vibration measurement chains, ensuring stable and accurate transmission of displacement signals without distortion or attenuation.
The cable is factory-terminated with precision coaxial connectors on both ends, ensuring repeatable electrical performance and eliminating field wiring variability.
It is designed for long-term operation in harsh industrial environments characterized by vibration, high temperature, oil exposure, and electromagnetic interference.
3. Technical Parameters
Electrical & Mechanical Specifications
| Parameter | Specification |
|---|---|
| Model | 330851-02-000-070-50-01-CN |
| Product Type | Proximity probe extension cable assembly |
| Function | Shaft vibration and displacement signal transmission |
| Cable Length | 7.0 m |
| Signal Type | Eddy current analog displacement signal |
| Shielding Structure | Multi-layer braided + foil shielding |
| Connector Type | Industrial sealed coaxial connectors |
| Operating Temperature | -40°C to +200°C |
| Insulation Material | Fluoropolymer high-performance insulation |
| Outer Jacket | Oil-resistant, chemical-resistant industrial polymer |
| EMI Resistance | High electromagnetic interference immunity |
| Cable Diameter | 5–8 mm (approx.) |
| Minimum Bend Radius | ≥ 25 mm |
| Weight | ~0.71 kg |
| Dimensions | 7000 mm length (coiled diameter ~380 mm) |
| Mechanical Design | Continuous vibration-resistant structure |
| Installation Type | Factory pre-assembled plug-and-play |
| Configuration Code | 50-01-CN specification |
4. Product Introduction
This cable assembly is a key element in industrial vibration monitoring systems used for rotating machinery protection.
It connects the proximity probe to downstream signal conditioning or monitoring equipment, forming a complete displacement measurement chain.
The product ensures stable transmission of high-frequency eddy current signals with minimal noise, distortion, or signal loss.
It is fully factory-assembled to ensure consistent quality, reduce installation complexity, and improve operational reliability.
Its structure is optimized for long-term durability under continuous vibration, thermal cycling, and harsh industrial environments.
5. Applications
This model is widely used in industrial rotating machinery monitoring systems.
It is installed in steam turbine units for shaft vibration, eccentricity, and axial displacement measurement.
It is used in centrifugal and axial compressors in oil and gas facilities for rotor stability monitoring and fault detection.
It is applied in hydroelectric generator systems for rotor alignment and dynamic behavior analysis.
It is commonly deployed in large industrial pump systems requiring continuous vibration monitoring.
In petrochemical plants, steel mills, and paper production facilities, it supports predictive maintenance through real-time displacement data acquisition.
6. Product Advantages
This model provides stable and low-noise signal transmission over medium-to-long cable distances.
Its multi-layer shielding design significantly reduces electromagnetic interference in industrial environments.
The outer jacket is resistant to oil, chemicals, abrasion, and high temperature exposure.
Factory pre-termination improves installation efficiency and eliminates wiring inconsistencies.
The cable maintains flexibility while resisting fatigue under continuous vibration conditions.
It integrates seamlessly into standardized industrial vibration monitoring architectures.
7. Product Series Overview
This model belongs to a proximity measurement system used for rotating machinery condition monitoring.
The system consists of three core components:
A proximity probe for detecting shaft movement, an extension cable for signal transmission, and a monitoring module for signal processing.
Together, these components form a calibrated measurement chain used for real-time vibration monitoring and predictive maintenance.
8. Related Models (Same Series / Closely Related Variants)
| Model | Description | Cable Length | Weight (kg) | Dimensions |
|---|---|---|---|---|
| 330851-02-000-030-50-01-CN | Short extension cable assembly | 3.0 m | 0.49 | 3000 mm coiled |
| 330851-02-000-050-50-01-CN | Standard 5.0 m extension cable | 5.0 m | 0.61 | 5000 mm coiled |
| 330851-02-000-060-50-01-CN | 6.0 m extension cable assembly | 6.0 m | 0.67 | 6000 mm coiled |
| 330851-02-000-070-50-01-CN | 7.0 m extension cable assembly | 7.0 m | 0.71 | 7000 mm coiled |
| 330851-02-000-080-50-01-CN | Long extension cable assembly | 8.0 m | 0.89 | 8000 mm coiled |
9. Popular Models (Same System Family – Industrial Monitoring Portfolio)
| Model | Description | Function | Weight (kg) | Dimensions |
|---|---|---|---|---|
| 330780-90-00 | Standard proximity probe | Shaft vibration sensing | 0.12 | ~90 mm probe length |
| 330785-91-00 | High-temperature proximity probe | Turbine monitoring | 0.33 | ~100 mm probe length |
| 330876-02-00 | Signal conditioning module | Signal processing unit | 2.50 | 120 × 80 × 60 mm |
| 3500/42M | Machinery protection module | Vibration monitoring system | 3.20 | Rack-mounted module |
| 3500/92 | Communication gateway module | Data acquisition interface | 3.45 | Rack-mounted unit |
10. Summary
This model is a precision-engineered cable assembly used in industrial vibration monitoring systems for rotating machinery protection.
It ensures stable and accurate transmission of displacement signals between sensing and processing equipment.
Its durability, shielding performance, and factory-assembled structure make it suitable for long-term operation in harsh industrial environments.
It is widely used in critical applications where reliability, operational safety, and predictive maintenance capability are essential.