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- 330881-28-04-145-03-02
- PROXPAC XL Proximity Transducer Assembly
- USA
- 1.45 m
- 0.24kg
- Xiamen, China
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Technical Product Report
Model: 330881-28-04-145-03-02
1. Brand
The 330881-28-04-145-03-02 is part of a professional industrial condition monitoring product family developed for continuous vibration, displacement, and shaft position measurement of rotating machinery.
These products are widely installed in facilities where equipment availability and operational safety are priorities, including:
- Thermal power plants
- Hydroelectric power stations
- Oil and gas production facilities
- Petrochemical complexes
- Natural gas compression stations
- Offshore production platforms
- Steel manufacturing plants
- Mining and mineral processing facilities
- Cement production lines
- Pulp and paper mills
- Marine propulsion systems
- Industrial automation systems
The product family is recognized for reliable measurement performance, excellent environmental adaptability, and long service life in demanding industrial environments.
2. Product Series
The 330881-28-04-145-03-02 belongs to the 3300 XL 8 mm Proximity Transducer System, specifically the 330881 Proximity Probe Assembly Series.
The series is designed to provide continuous condition monitoring for rotating equipment by accurately measuring shaft movement and mechanical vibration.
A complete monitoring system normally consists of:
- 330881 Proximity Probe
- 330880 Extension Cable
- Proximitor Sensor
- Vibration Monitoring Module
- Machinery Protection System
Together, these components provide continuous machine health information for predictive maintenance and equipment protection.
3. Product Introduction
The 330881-28-04-145-03-02 is an industrial-grade 8 mm eddy current proximity probe designed for precision non-contact measurement of shaft displacement and vibration.
The probe generates a stable high-frequency electromagnetic field at its sensing tip. As a conductive metal target approaches or moves away from the probe, the eddy current generated inside the target changes proportionally. These variations are converted into highly accurate analog electrical signals that represent shaft movement.
This particular configuration incorporates a 1.45 m integrated cable together with the 04 mounting configuration, allowing installation in applications requiring additional routing flexibility while maintaining excellent signal integrity.
Its rugged mechanical construction allows long-term operation in environments exposed to vibration, lubricating oil, moisture, dust, and industrial contaminants.
The probe is intended for continuous online monitoring systems where stable measurement, repeatability, and equipment protection are essential.
4. Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 330881-28-04-145-03-02 |
| Product Type | 8 mm Proximity Probe Assembly |
| Series | 3300 XL 8 mm Proximity Transducer System |
| Measurement Principle | Eddy Current Technology |
| Probe Diameter | 8 mm |
| Probe Material | Stainless Steel |
| Cable Configuration | Integrated Shielded Cable |
| Cable Length | 1.45 m |
| Mounting Configuration | Code 04 |
| Connector Type | Industrial Coaxial Connector |
| Output Type | Analog Displacement Signal |
| Measurement Functions | Shaft Vibration, Radial Displacement, Axial Position |
| Sensitivity | High Precision Linear Output |
| Repeatability | Excellent |
| Response Speed | High-Speed Dynamic Response |
| Operating Temperature | -51°C to +177°C |
| Storage Temperature | -55°C to +200°C |
| Protection Characteristics | Oil Resistant, Moisture Resistant, Dust Resistant |
| Electromagnetic Compatibility | High EMI Immunity |
| Installation Method | Threaded Mounting |
| Probe Dimensions | Approx. 120 mm × 8 mm |
| Cable Dimensions | Approx. 1450 mm |
| Overall Dimensions | Approx. 1570 mm (Probe + Cable) |
| Weight | Approx. 0.24 kg |
| Maintenance Requirement | Minimal |
| Expected Service Life | Long-Term Continuous Industrial Operation |
5. Product Features
The 330881-28-04-145-03-02 is engineered for continuous monitoring of rotating machinery operating under demanding industrial conditions.
Its eddy current sensing technology provides highly stable non-contact measurement without introducing mechanical wear to the monitored shaft.
The integrated cable minimizes signal loss while maintaining measurement accuracy over the entire operating range.
The stainless steel probe housing provides excellent corrosion resistance and mechanical strength.
The shielded cable effectively reduces electromagnetic interference, ensuring accurate signal transmission even in electrically noisy industrial environments.
The probe is designed to operate continuously for years with minimal maintenance requirements.
6. Product Applications
The 330881-28-04-145-03-02 is suitable for numerous industrial monitoring applications, including:
- Steam turbine monitoring
- Gas turbine protection systems
- Industrial compressor monitoring
- Centrifugal compressor vibration analysis
- Axial compressor protection
- Large centrifugal pumps
- Boiler feedwater pumps
- Electric motor condition monitoring
- Generator shaft displacement monitoring
- Hydro turbine vibration measurement
- Cooling tower drive systems
- Industrial blower monitoring
- Gearbox condition monitoring
- Refinery rotating equipment
- LNG compressor stations
- Offshore production platforms
- Pipeline compressor stations
- Steel rolling mills
- Cement production equipment
- Paper machine monitoring
- Mining processing machinery
- Continuous predictive maintenance systems
The probe is particularly suitable wherever reliable shaft displacement measurement is required for machinery protection.
7. Product Advantages
Excellent Measurement Stability
The eddy current sensing system delivers stable and repeatable measurements throughout continuous operation.
Non-Contact Detection
Because the sensing element never physically touches the rotating shaft, there is virtually no mechanical wear during operation.
Flexible Installation
The 1.45 m cable configuration offers greater routing flexibility while maintaining excellent signal quality.
High Environmental Durability
The stainless steel construction provides excellent resistance against corrosion, vibration, lubricating oils, and industrial contaminants.
Outstanding Dynamic Response
The probe accurately follows rapid shaft movement, making it suitable for high-speed rotating equipment.
Strong Electromagnetic Immunity
Shielded cable construction minimizes signal interference in electrically demanding environments.
Long Service Life
Industrial-grade materials and robust construction ensure reliable long-term operation with minimal maintenance.
Easy Integration
The probe integrates seamlessly into complete machinery protection and condition monitoring systems.
8. Recommended Models (Same Series or Related Products)
| Model | Description | Main Parameters |
|---|---|---|
| 330881-28-04-090-03-02 | Compact probe configuration | 0.90 m cable; Approx. 1020 mm overall length; Weight 0.21 kg |
| 330881-28-04-110-03-02 | Medium cable version | 1.10 m cable; Approx. 1220 mm overall length; Weight 0.22 kg |
| 330881-28-04-130-03-02 | Extended cable version | 1.30 m cable; Approx. 1420 mm overall length; Weight 0.23 kg |
| 330881-28-00-165-07-02 | Standard installation version | 1.65 m cable; Approx. 1770 mm overall length; Weight 0.29 kg |
| 330880-28-40-058-01-02 | Extension cable assembly | 5.8 m cable; Diameter Approx. 5 mm; Weight 0.43 kg |
9. Recommended Popular Models
| Model | Description | Main Parameters |
|---|---|---|
| 3500/42M | Shaft vibration monitoring module | 241 × 24 × 241 mm; Weight 0.80 kg |
| 3500/40M | Proximitor monitoring module | 241 × 24 × 241 mm; Weight 0.75 kg |
| 3500/22M | Communication interface module | 241 × 24 × 241 mm; Weight 0.76 kg |
| 3500/32M | Relay output module | 241 × 24 × 241 mm; Weight 0.68 kg |
| 3500/15 | System power supply module | 241 × 51 × 241 mm; Weight 1.20 kg |
10. Summary
The 330881-28-04-145-03-02 is a high-performance 8 mm proximity probe engineered for continuous monitoring of shaft vibration, displacement, and machine condition in industrial rotating equipment.
Its 1.45 m integrated cable and specialized mounting configuration provide additional installation flexibility while preserving excellent signal stability and measurement accuracy. The non-contact eddy current sensing principle eliminates mechanical wear, enabling dependable long-term operation.
Featuring a stainless steel housing, excellent environmental resistance, strong immunity to electromagnetic interference, and high dynamic response, this probe is well suited for demanding applications involving turbines, compressors, generators, pumps, motors, and other critical rotating machinery.
When integrated into a complete machinery protection system, the 330881-28-04-145-03-02 helps detect developing mechanical faults at an early stage, supports predictive maintenance strategies, minimizes unplanned downtime, extends equipment service life, and contributes to safer and more efficient industrial operation.