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- 330851-04-000-015-10-01-05
- 3300 XL 25mm Proximity Probe
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Technical Engineering Report
330851-04-000-015-10-01-05 Proximity Probe System
1. Product Overview
The model 330851-04-000-015-10-01-05 is an 8 mm eddy current proximity probe assembly designed for high-precision monitoring of shaft vibration, axial displacement, and rotor dynamic behavior in rotating machinery.
It is a non-contact measurement system that converts changes in distance between the probe tip and a conductive shaft surface into a proportional electrical signal. This signal is used for continuous condition monitoring and machinery protection functions in industrial environments.
The “015” typically represents a 1.5-meter cable configuration, while the suffix variation “10-01-05” defines calibration, connector, and system configuration details within the same probe family architecture.
2. Brand and Product Series
- Brand: Industrial vibration monitoring instrumentation manufacturer
- Product family: 3300 XL 8 mm Proximity Transducer System
- Technology type: Eddy current displacement sensing system
- System structure: Probe + Extension cable + Driver module
This product series is widely used in rotating machinery protection systems where high reliability and long-term stability are required.
3. Product Introduction
This probe system is designed for permanent installation in industrial rotating equipment such as turbines, compressors, pumps, and generators.
It forms part of a complete vibration monitoring chain where the probe senses shaft movement, the cable transmits the signal, and the driver converts it into a usable electrical output for monitoring systems.
The system is engineered for harsh industrial environments including high temperature, vibration, oil exposure, and electromagnetic interference.
4. Technical Parameters
4.1 Electrical Characteristics
- Measurement principle: Eddy current non-contact displacement sensing
- Output signal: Linear voltage proportional to shaft gap
- Sensitivity: ~7.87 mV/µm (standard 8 mm system)
- Operating voltage: -17 VDC to -24 VDC
- Frequency response: DC to several kHz vibration range
- Linear measurement range: ~2.0 mm
- Calibration: Factory matched probe-cable-driver system
4.2 Mechanical Characteristics
- Probe diameter: 8 mm
- Probe material: Stainless steel housing
- Cable length: 1.5 m
- Cable type: Shielded high-temperature coaxial cable
- Connector type: Industrial miniature coaxial connector
- Installation type: Threaded mounting design
- Environmental resistance: Oil, heat, vibration resistant
4.3 Dimensions and Weight
| Item | Specification |
|---|---|
| Probe diameter | 8 mm |
| Probe length | ~100 mm |
| Cable length | 1.5 m |
| Total system length | ~1.7–2.1 m |
| Probe weight | 0.11 kg |
| Cable weight | 0.10 kg |
| System reference weight | 0.32 kg |
| Total assembled system weight | 0.22 kg |
5. Product Function Description
The system operates using eddy current sensing technology. A high-frequency electromagnetic field is generated at the probe tip.
When a conductive shaft approaches the probe, eddy currents are induced in the shaft surface, changing the impedance of the probe coil. This change is converted into a voltage signal proportional to the distance between probe and shaft.
This enables continuous monitoring of key mechanical conditions such as:
- Shaft radial vibration
- Axial displacement (thrust position)
- Rotor dynamic stability
- High-resolution short-distance measurement points
6. Application Areas
This model is commonly used in compact or precision industrial monitoring environments:
- Small turbine systems
- Auxiliary pump assemblies
- Compressor skid units
- Gearbox monitoring points
- OEM machinery integration
- Test bench rotating equipment
- Laboratory measurement systems
- Compact industrial motor systems
It is selected where installation space is limited but measurement accuracy is critical.
7. Product Advantages
- High precision micro-displacement measurement capability
- Compact structure suitable for tight installation spaces
- Stable long-term signal performance
- Strong electromagnetic interference resistance
- Reliable operation in harsh industrial environments
- Modular architecture for flexible integration
- High linearity across measurement range
- Suitable for OEM and compact system design
8. Product Series Overview
This model belongs to the 8 mm eddy current proximity probe system family, characterized by:
- Standard 8 mm probe geometry
- Modular probe-cable-driver structure
- High interchangeability between system components
- Designed for permanent industrial installation
- Widely used in rotating machinery monitoring systems
9. Recommended Models (Same Series or Closely Related)
Same Series Variants
| Model | Description | Key Parameters | Dimensions | Weight (kg) |
|---|---|---|---|---|
| 330851-04-000-010-10-01-05 | Short cable version | 8 mm probe, 1 m cable | 8 mm × 95 mm | 0.19 |
| 330851-04-000-015-10-01-05 | Current model | 8 mm probe, 1.5 m cable | 8 mm × 100 mm | 0.22 |
| 330851-04-000-020-10-01-05 | Medium cable version | 8 mm probe, 2 m cable | 8 mm × 100 mm | 0.23 |
| 330851-04-000-050-10-01-05 | Standard extension version | 8 mm probe, 5 m cable | 8 mm × 100 mm | 0.25 |
| 330851-04-000-080-10-01-05 | Extended cable version | 8 mm probe, 8 m cable | 8 mm × 102 mm | 0.47 |
10. Recommended Models (Same Brand Popular Units)
| Model | Description | Key Parameters | Dimensions | Weight (kg) |
|---|---|---|---|---|
| 330780-90-00 | Standard proximity probe | 8 mm vibration monitoring probe | 8 mm × 100 mm | 0.18 |
| 330400-02-00 | High temperature probe | Thermal resistant probe design | 8 mm × 102 mm | 0.21 |
| 330180-50-00 | Signal conditioning module | Signal conversion unit | 120 × 80 × 40 mm | 0.45 |
| 330100-90-00 | Driver module | Signal amplification module | 150 × 100 × 50 mm | 0.82 |
| 3500/42M | Monitoring module | Multi-channel protection system | 220 × 130 × 60 mm | 1.25 |
11. Engineering Summary
The 330851-04-000-015-10-01-05 proximity probe system is designed for compact installation environments requiring short cable routing and high-precision measurement performance.
It provides stable and continuous monitoring of shaft vibration and displacement, making it suitable for OEM machinery, compact rotating systems, and precision test applications.
The system is widely used in predictive maintenance strategies to detect early mechanical faults such as imbalance, misalignment, and bearing wear, improving operational stability and reducing downtime.