Description
Bently Nevada 330730-80-00-00
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 330730-80-00-00 |
| Cable Length | 8.0 meters (26.2 feet) |
| Connector and Cable Type | Standard cable |
| Agency Approval | Not required |
| Cable Type | 75 Ω triaxial |
| Insulation Material | Fluoroethylene propylene (FEP) |
| Capacitance | 69.9 pF/m (21.3 pF/ft) typical |
| DC Resistance (Core-to-Core) | 2.0 ± 0.5 Ω |
| DC Resistance (Shield-to-Shield) | 0.6 ± 0.2 Ω |
| Temperature Range | -52°C to +177°C (-62°F to +350°F) |
| Weight | 0.28 kg (0.62 lbs) |
| Minimum Bend Radius | 25.4 mm (1.0 in) |
Functional Features The cable features standard coaxial connectors at both ends. The triaxial 75 Ω construction ensures impedance matching throughout the system. The FEP insulation provides excellent dielectric properties and temperature resistance. The cable is fully interchangeable with other 3300 XL 11 mm system components. The standard configuration is suitable for general industrial environments where special environmental protection is not required.
Application Scenarios General industrial machinery monitoring systems, standard turbine supervisory instrumentation, compressor monitoring installations, pump vibration monitoring, generator shaft monitoring, axial position measurement systems, reciprocating compressor monitoring.
Performance Parameters The cable exhibits 69.9 pF/m capacitance and maintains stable electrical characteristics across the full -52°C to +177°C temperature range. The DC resistance is precisely controlled to 2.0 ± 0.5 Ω core-to-core for the 8.0 meter length. When combined with a 1.0 meter probe, this cable creates a 9.0 meter electrical length system compatible with 9.0 meter Proximitor Sensors.
Material Composition The cable uses copper conductors with FEP dielectric insulation. The shielding system consists of braided copper shields. Connector bodies are machined from brass and gold-plated. The outer jacket is FEP. The cable is non-armored for maximum routing flexibility.
Structural Characteristics The 8.0 meter overall length is manufactured to precise electrical length tolerances. Both ends are terminated with standard coaxial connectors. The cable outside diameter is 3.7 mm maximum. The construction features separate inner and outer shields for optimal noise immunity.
Working Principle The extension cable carries the RF excitation signal from the Proximitor Sensor to the probe tip and returns the amplitude-modulated signal containing the gap distance information. The triaxial design uses the center conductor for the signal, the inner shield for the RF return path, and the outer shield for ground and EMI protection.
Installation Requirements Install the cable between the probe and Proximitor Sensor. Maintain a minimum bend radius of 25.4 mm throughout the cable route. Secure the cable with appropriate clamps to prevent stress on the connectors. Verify that the total electrical length matches the Proximitor Sensor specification.
Usage Precautions Avoid installing the cable in areas where it will be crushed or abraded. The standard cable does not provide oil leak prevention. Use connector protectors in humid or oily environments. Do not coil excess cable in tight loops that violate the minimum bend radius.
