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- 330851-03-000-010-10-00-05
- 3300 XL 25mm Proximity Probe
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Technical Engineering Report
330851-03-000-010-10-00-05 Proximity Probe System
1. Product Overview
The model 330851-03-000-010-10-00-05 is an 8 mm eddy current proximity probe system designed for precision measurement of shaft vibration, axial displacement, and rotor dynamic behavior in rotating machinery.
It is a non-contact sensing device that converts changes in the gap between the probe tip and a conductive target surface into a proportional electrical signal. This signal is used for real-time machinery condition monitoring and protection applications.
The “010” in the model code typically represents a short cable configuration segment, making this version suitable for compact installations where the distance between probe and monitoring system is relatively small.
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 measurement system
- System architecture: Probe + Extension cable + Driver module
This product series is widely used in industrial rotating machinery monitoring applications, especially in turbines, compressors, and pumps where continuous monitoring is required.
3. Product Introduction
This probe system is designed for permanent installation in rotating machinery such as turbines, compressors, pumps, and generators.
It forms part of a complete vibration measurement chain, where the probe detects shaft motion, the cable transmits the signal, and the driver converts it into a usable output for monitoring systems.
The system is engineered for harsh industrial environments including high temperature, vibration, oil exposure, and electromagnetic interference conditions.
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: 1.0 m (model segment “010”)
- Cable type: Shielded high-temperature coaxial cable
- Connector type: Miniature industrial coaxial connector
- Installation type: Threaded probe mounting
- Environmental resistance: Oil, heat, and vibration resistant
4.3 Dimensions and Weight
| Item | Specification |
|---|---|
| Probe diameter | 8 mm |
| Probe length | ~100 mm |
| Cable length | 1.0 m |
| Total system length | ~1.2–1.5 m |
| Probe weight | 0.11 kg |
| Cable weight | 0.08 kg |
| System reference weight | 0.25 kg |
| Total assembled system weight | 0.19 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 stability condition
- Short-range precision mechanical monitoring
6. Application Areas
This model is typically used in compact or short-distance industrial monitoring installations:
- Small steam turbine assemblies
- Auxiliary pump systems
- Compressor skid units
- Gearbox monitoring points
- Test bench rotating equipment
- Laboratory or OEM machinery setups
- Compact industrial motor systems
- Condition monitoring test rigs
It is commonly used where installation space is limited but high precision measurement is still required.
7. Product Advantages
- High precision micro-displacement measurement capability
- Compact installation design for short-distance systems
- Stable signal output performance
- Strong electromagnetic interference resistance
- Suitable for confined industrial environments
- Reliable continuous monitoring capability
- High linearity across full measurement range
- Proven durability in industrial applications
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 architecture
- High interchangeability between 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) |
|---|---|---|---|---|
| 330851-03-000-005-10-00-05 | Ultra short cable version | 8 mm probe, 0.5 m cable | 8 mm × 90 mm | 0.18 |
| 330851-03-000-010-10-00-05 | Current model | 8 mm probe, 1 m cable | 8 mm × 100 mm | 0.19 |
| 330851-03-000-020-10-00-05 | Short cable version | 8 mm probe, 2 m cable | 8 mm × 100 mm | 0.21 |
| 330851-03-000-050-10-00-05 | Medium cable version | 8 mm probe, 5 m cable | 8 mm × 100 mm | 0.24 |
| 330851-03-000-080-10-00-05 | 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 | Enhanced thermal resistance design | 8 mm × 102 mm | 0.21 |
| 330180-50-00 | Signal conditioning module | Converts probe signal to output | 120 × 80 × 40 mm | 0.45 |
| 330100-90-00 | Driver module | Signal amplification and conditioning | 150 × 100 × 50 mm | 0.82 |
| 3500/42M | Monitoring module | Multi-channel machinery protection system | 220 × 130 × 60 mm | 1.25 |
11. Engineering Summary
The 330851-03-000-010-10-00-05 proximity probe system is designed for compact installation environments requiring short cable routing and high-precision shaft displacement measurement.
It provides stable and accurate monitoring of vibration and axial movement in rotating machinery, making it suitable for OEM equipment, test systems, and space-constrained industrial applications.
The system is widely used in predictive maintenance strategies to detect early mechanical issues such as imbalance, misalignment, and bearing wear, helping improve equipment reliability and reduce maintenance costs.