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- 330851-02-000-080-90-01-05
- 3300 XL 25mm Proximity Probe
- USA
- 8 mm
- 0.47kg
- Xiamen, China
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Technical Description and Engineering Overview
330851-02-000-080-90-01-05 Proximity Probe System
1. Product Overview
The model 330851-02-000-080-90-01-05 is an 8 mm eddy current proximity probe assembly used for precision shaft vibration and displacement measurement in rotating machinery.
It is designed for continuous condition monitoring and protection of critical industrial equipment, especially in high-speed rotating systems where mechanical stability is essential.
The system operates on the eddy current principle, converting changes in the gap between the probe tip and conductive shaft surface into a proportional electrical signal. This allows accurate monitoring of vibration, axial position, and mechanical condition.
2. Brand and Series Information
- Brand: Industrial vibration monitoring instrumentation brand (premium condition monitoring manufacturer)
- Product family: 3300 XL 8 mm Proximity Transducer System
- Series type: Eddy current displacement measurement system
- System components: Probe + Extension cable + Driver
This series is widely recognized for high reliability in industrial machinery protection systems and is commonly used in mission-critical rotating equipment.
3. Technical Parameters
3.1 Electrical Characteristics
- Measurement principle: Eddy current displacement sensing
- Output type: Linear voltage proportional to shaft distance
- Sensitivity: ~7.87 mV/µm (typical 8 mm system value)
- Frequency response: DC to several kHz vibration range
- Operating voltage: -17 VDC to -24 VDC
- Measurement range: Approx. 2.0 mm linear range
- Calibration type: Factory calibrated system
3.2 Mechanical Characteristics
- Probe diameter: 8 mm
- Probe material: Stainless steel housing
- Cable structure: Coaxial high-temperature cable
- Cable length variant: 8 m system (as indicated by model code segment “080”)
- Connector type: Miniature coaxial connector system
- Mounting style: Threaded probe installation
3.3 Dimensions and Weight
| Item | Specification |
|---|---|
| Probe diameter | 8 mm |
| Probe length | ~100 mm |
| Cable length | ~8 m |
| Probe housing material | Stainless steel |
| Total system length | ~8.1–8.5 m |
| Probe weight | 0.12 kg |
| Extension cable weight | 0.35 kg |
| Total system weight | 0.47 kg |
4. Product Function Description
This probe system is designed to measure the distance between the probe tip and a rotating shaft surface.
When installed, it continuously tracks shaft movement in real time and converts mechanical displacement into a stable electrical signal.
The system is commonly used for:
- Radial vibration measurement
- Axial displacement monitoring
- Shaft position (thrust monitoring)
- Machine condition trend analysis
5. Application Areas
The product is widely applied in industrial environments where rotating machinery reliability is critical:
- Steam turbine generator sets
- Gas turbine monitoring systems
- Centrifugal compressors in petrochemical plants
- Large centrifugal pumps
- Industrial gearbox systems
- Marine propulsion shaft lines
- Paper mill drive systems
- Heavy-duty electric motors
It is typically installed as part of a machinery protection and predictive maintenance system.
6. Product Advantages
- High measurement precision for micro-scale displacement
- Stable operation in high-temperature industrial environments
- Strong resistance to electromagnetic interference
- Long-term stability suitable for continuous monitoring
- Modular structure allows flexible configuration
- High linearity within operating range
- Suitable for critical asset protection systems
- Proven performance in harsh industrial environments
7. Product Series Characteristics
This model belongs to the 8 mm proximity probe system family, which is characterized by:
- Standardized probe geometry (8 mm diameter)
- Interchangeable system components
- Compatibility with vibration monitoring modules
- Designed for permanent installation on rotating machinery
- High reliability for long-term industrial use
8. Recommended Models (Same Series or Closely Related)
Same Series Variants
| Model | Description | Key Parameters | Dimensions | Weight (kg) |
|---|---|---|---|---|
| 330851-02-000-050-90-01-05 | Short cable configuration | 8 mm probe, 5 m cable, vibration monitoring | 8 mm × 95 mm | 0.24 |
| 330851-02-000-060-90-01-05 | Medium cable version | 8 mm probe, 6 m cable, compressor use | 8 mm × 98 mm | 0.26 |
| 330851-02-000-080-90-01-00 | Standard configuration | 8 mm probe, 8 m cable, general use | 8 mm × 100 mm | 0.47 |
| 330851-02-000-090-90-01-05 | Extended cable type | 8 mm probe, 9 m cable, turbine systems | 8 mm × 102 mm | 0.52 |
| 330851-02-000-100-90-01-05 | Extra long cable version | 8 mm probe, 10 m cable, heavy machinery | 8 mm × 105 mm | 0.58 |
9. Recommended Models (Same Brand Popular Units)
| Model | Description | Key Parameters | Dimensions | Weight (kg) |
|---|---|---|---|---|
| 330780-90-00 | Standard proximity probe | 8 mm system, general vibration monitoring | 8 mm × 100 mm | 0.18 |
| 330400-02-00 | High temperature probe | Improved thermal stability design | 8 mm × 102 mm | 0.21 |
| 330180-50-00 | Signal processing module | Converts probe output to monitoring signal | 120 × 80 × 40 mm | 0.45 |
| 330100-90-00 | Proximitor driver unit | Signal conditioning and amplification | 150 × 100 × 50 mm | 0.82 |
| 3500/42M | Vibration monitoring module | Multi-channel machinery protection module | 220 × 130 × 60 mm | 1.25 |
10. Engineering Summary
The 330851-02-000-080-90-01-05 proximity probe system is designed for high-precision shaft displacement and vibration monitoring in rotating machinery.
Its robust construction, stable signal output, and compatibility with industrial monitoring systems make it suitable for long-term deployment in critical equipment protection environments.
The system plays an essential role in predictive maintenance strategies by enabling early detection of mechanical issues such as imbalance, misalignment, or bearing wear.