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- Bently Nevada
- 330104-12-20-10-01-00
- 3300 XL 8 mm Proximity Probes
- USA
- 200 mm
- 0.34kg
- Xiamen, China
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Bently Nevada 330104-12-20-10-01-00 Proximity Probe – Full Technical Profile
1. Product Overview
The 330104-12-20-10-01-00 is an 8 mm eddy current proximity probe used for high-accuracy measurement of shaft vibration, axial displacement, and rotor position in rotating machinery.
It is part of the widely adopted 3300 XL 8 mm proximity transducer system, designed for continuous condition monitoring and machinery protection in industrial environments.
This probe delivers stable, non-contact measurement even under harsh operating conditions such as high temperature, heavy vibration, oil contamination, and dust exposure. It is commonly installed in turbines, compressors, pumps, and generators.
2. Brand Information
Brand: Bently Nevada
A globally recognized provider of machinery protection systems, vibration monitoring technologies, and predictive maintenance solutions for critical industrial equipment across power generation, oil & gas, petrochemical, and heavy industry sectors.
3. Product Series
Series: 3300 XL 8 mm Proximity Transducer System
Key characteristics:
- Eddy current non-contact displacement measurement
- High linear accuracy and long-term stability
- Strong resistance to oil, dust, vibration, and industrial contamination
- Modular system architecture (probe + extension cable + proximitor sensor)
- Designed for continuous 24/7 monitoring applications
- Compatible with standardized machinery protection systems
Typical performance range:
- Linear measurement range: approximately 0.25 mm to 2.0 mm
- Designed for rotating shaft vibration and displacement monitoring
4. Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 330104-12-20-10-01-00 |
| Measurement Principle | Eddy current proximity sensing |
| Probe Diameter | 8 mm |
| System Series | 3300 XL 8 mm |
| Unthreaded Length | 12 mm |
| Case Length | 200 mm |
| Output Signal | Linear voltage proportional to gap |
| Operating Temperature | -40°C to +125°C |
| Housing Material | Stainless steel |
| Probe Tip Material | PPS polymer |
| Cable Type | Coaxial shielded cable |
| Connector Type | ClickLoc miniature coaxial connector |
| Environmental Protection | Oil, dust, vibration resistant |
| Weight | ~0.22–0.34 kg (assembly dependent) |
| Dimensions | ~200 mm probe body configuration |
| Installation Type | Threaded mounting |
| Application Mode | Radial / axial shaft monitoring |
5. Product Applications
The 330104-12-20-10-01-00 probe is widely used in rotating machinery condition monitoring systems:
- Steam turbine vibration monitoring
- Gas turbine rotor displacement measurement
- Hydro turbine stability monitoring
- Centrifugal compressor condition monitoring
- Industrial pump vibration detection
- Gearbox alignment and wear monitoring
- Generator rotor dynamic tracking
- Refinery rotating equipment protection systems
- Power plant predictive maintenance systems
It is especially effective for early detection of mechanical issues such as imbalance, misalignment, looseness, and rotor instability.
6. Product Advantages
- High-precision non-contact measurement technology
- Stable long-term signal output
- Strong resistance to harsh industrial environments
- Suitable for continuous 24/7 operation
- Low drift and high repeatability
- Fully compatible with 3300 XL system architecture
- Fast and stable signal transmission
- Minimal maintenance requirements
- High durability under vibration-heavy conditions
- Proven reliability in critical rotating machinery
7. Related Models (Same Series / Compatible Variants)
| Model | Type | Key Parameter |
|---|---|---|
| 330104-10-20-10-01-00 | Standard version | 10 mm configuration |
| 330104-12-19-10-01-00 | Medium length variant | 190 mm body |
| 330104-12-17-10-01-00 | Shorter version | 170 mm body |
| 330104-08-20-10-01-00 | Compact probe | Reduced body size |
| 330105-12-20-10-01-00 | High sensitivity probe | Enhanced resolution |
8. Popular Models (Same Brand)
| Model | Type | Key Specification |
|---|---|---|
| 330104-12-20-10-01-00 | Proximity Probe | 8 mm eddy current probe |
| 330780-90-00 | Proximitor Sensor | Signal conditioning module |
| 330130-080-00-00 | Extension Cable | Standard probe cable |
| 3500/42M | Vibration Monitor Module | Multi-channel monitoring system |
| 3500/15 | Power Supply Module | Rack system power distribution |
9. Frequently Asked Questions (FAQ)
Q1: What is the main function of this probe?
A1: It measures shaft vibration and displacement using eddy current non-contact sensing technology.
Q2: Where is it commonly installed?
A2: It is used in turbines, compressors, pumps, and generators.
Q3: Can it operate continuously?
A3: Yes, it is designed for 24/7 industrial monitoring systems.
Q4: What is the measurement principle?
A4: It detects changes in electromagnetic fields caused by conductive shaft movement.
Q5: Is it suitable for harsh environments?
A5: Yes, it is resistant to vibration, oil, dust, and high temperature conditions.
Q6: What output does it provide?
A6: It outputs a linear voltage proportional to shaft displacement.
Q7: Does it require calibration?
A7: It is factory calibrated and generally requires no field adjustment.
Q8: What materials can it measure?
A8: It is optimized for conductive metallic surfaces such as steel shafts.
Q9: What is its service life?
A9: It provides long-term stable performance under proper installation conditions.
Q10: What maintenance is required?
A10: Only periodic inspection of cable condition and mounting integrity is needed.