Description
Bently Nevada 330130-070-00-00
Technical Specifications:
- Cable Length: 7.0 meters (22.9 feet)
- Cable Type: Standard non-armored cable
- Connector Type: Micro-coaxial ClickLoc gold-plated copper connectors
- Conductor Type: 75Ω triaxial coaxial structure
- Insulation Material: FEP (Fluoroethylene Propylene)
- Operating Temperature Range: -52°C to +177°C
- Minimum Bend Radius: 25.4mm (1 inch)
- Certification: No special certification required
- Compliance Standard: API 670 (4th Edition)
Functional Features:
- 75Ω triaxial coaxial structure ensures impedance matching and signal transmission integrity
- FEP insulation material provides excellent chemical resistance and high-temperature performance
- Multi-layer shielding design effectively resists electromagnetic interference in the field
- ClickLoc gold-plated copper connectors ensure corrosion-resistant, tool-free reliable connections
- Fully interchangeable with the 3300 XL 8mm system, no individual calibration required
- Backward compatible with non-XL 3300 series 5mm and 8mm components
- Low-loss high-frequency signal transmission
Application Scenarios:
- Steam turbine shaft vibration monitoring
- Compressor axial displacement measurement
- Generator bearing vibration monitoring
- Large fan shaft vibration monitoring
- Feedwater pump vibration and displacement monitoring
- Gearbox condition monitoring
- Applications requiring longer cable runs without armored protection
Performance Parameters:
- Cable Capacitance: 69.9 pF/m (21.3 pF/ft)
- Output Impedance: 50Ω
- Sensitivity Stability: Output changes less than 2mV per 1 volt change in input voltage
- Frequency Response: 0 to 10kHz
- Signal Loss: Extremely low loss in the 0 to 10kHz frequency range
- Core Resistance (RCORE): 1.54Ω ± 0.23Ω (for 7.0m length)
- Jacket Resistance (RJACKET): 0.46Ω ± 0.09Ω (for 7.0m length)
Material Composition:
- Conductor: Copper core with braided shielding layer
- Insulation Layer: FEP (Fluoroethylene Propylene)
- Connector: ClickLoc gold-plated copper
- Outer Jacket: Standard industrial-grade polymer
Structural Characteristics: Flexible coaxial cable with a triaxial structure. The cable is equipped with ClickLoc gold-plated copper connectors. The standard non-armored structure is suitable for indoor or conduit installations where the risk of mechanical damage is low. The 7.0-meter length provides sufficient wiring margin for standard 9-meter system configurations (when paired with a 2-meter probe).
Working Principle: The extension cable serves as the signal transmission bridge in the eddy current sensor system, transmitting the high-frequency signal generated by the probe tip coil to the Proximitor without loss through the coaxial structure. The outer shielding braid of the coaxial structure prevents external electromagnetic interference from intruding, while the inner signal line maintains constant impedance. Once the signal reaches the Proximitor, it undergoes amplification, demodulation, and linearization, ultimately outputting a DC voltage signal proportional to the distance between the probe tip and the target surface.
Installation Requirements:
- Ensure the total length of the probe cable plus the extension cable strictly equals 5.0 meters or 9.0 meters
- Cable routing must maintain at least 30cm clearance from high-voltage power cables
- Maintain a minimum bend radius of 25.4mm; prohibit excessive bending
- ClickLoc connectors are hand-tightened; do not use tools
- The shielding layer must be grounded at a single point on the Proximitor end; prohibit multi-point grounding to prevent ground loops
- Use conduit or cable trays for protection in areas with mechanical damage risk
Usage Notes:
- The “00” code indicates a standard non-armored cable without connector protector, suitable for clean indoor environments
- Inspect connector condition at each maintenance interval
- Never cut or splice the extension cable; any modification will destroy impedance matching
- Regularly inspect connector connection status to ensure there is no looseness or corrosion
- Avoid prolonged exposure of the cable to high-temperature environments (exceeding 177°C)
- When replacing the cable, select a specification that exactly matches the original model
