Description
System Architecture & Operational Principle
The Bently Nevada 330130-045-02-05 is a 3300 XL Series extension cable designed for Level 1 (Device) or Level 2 (Control) of the Purdue Model in industrial automation. It resides in the field (e.g., on a machine’s guard or control cabinet) and serves as the bridge between 3300 NSv proximity probes (e.g., 330905-00-25-02-CN) and 3300 NSv proximitor sensors (e.g., 330980-51-00).
Upstream Communication
Receives raw eddy current signals from the proximity probe, which vary with the gap between the probe tip and the rotating shaft. The probe emits a high-frequency magnetic field that induces eddy currents in the shaft’s surface; these currents modulate the field, creating a signal proportional to the gap.
Downstream Communication
Transmits these weak eddy current signals to the proximitor sensor, which amplifies and conditions the signal into a DC voltage (proportional to the gap) for use by 3500 Series monitor modules (e.g., 3500/40M vibration monitors).
Operational Advantages
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High Compatibility: Fully compatible with Bently Nevada 3300 NSv series probes and proximitors, ensuring seamless integration into existing machinery protection systems.
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Robust Construction: Stainless steel overbraid and PTFE insulation provide resistance to moisture, oil, and mechanical stress, making it suitable for harsh industrial environments.
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Stable Signal Transmission: The cable’s design minimizes signal attenuation, ensuring accurate data transfer over the 4.5 m length—critical for reliable machinery monitoring.
Core Technical Specifications
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Attribute
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Specification
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Cable Type
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3300 XL Series Extension Cable (for Proximity Probes)
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Length
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4.5 m (14.8 ft) ± 0.1 m
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Connector Type
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Miniature coaxial ClickLoc (corrosion-resistant, tool-free connection)
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Insulation Material
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PTFE (polytetrafluoroethylene)
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Overbraid Material
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Stainless steel (304 grade)
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Operating Temperature
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-52°C to +177°C (-62°F to 350°F)
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Storage Temperature
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-50°C to +85°C (-58°F to 185°F)
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Shielding
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Braided copper (90% coverage) + aluminum foil
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Impedance
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50 Ω (nominal)
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Attenuation
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≤ 0.5 dB/m at 1 MHz (typical)
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Certifications
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CE, UL, CSA, ATEX (hazardous locations); API 670 compliant
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Bently 330105-02-12-10-02-CN
Customer Value & Operational Benefits
Reliable Signal Integrity
The cable’s PTFE insulation and braided copper shield minimize electromagnetic interference (EMI) and signal loss, ensuring that proximitor sensors receive accurate eddy current signals. This is critical for detecting small changes in shaft vibration or displacement—early signs of machinery faults.
Simplified Maintenance
The ClickLoc connectors allow for tool-free installation and replacement, reducing maintenance time and labor costs. Technicians can replace a damaged cable in minutes without needing specialized tools or re-calibration.
Extended Asset Life
By providing stable signal transmission, the cable helps ensure that machinery protection systems operate reliably, reducing the risk of unplanned downtime and extending the life of critical assets (e.g., turbines, compressors).
Compliance with Industry Standards
API 670 compliance ensures that the cable meets the rigorous requirements of industries like oil & gas and power generation, making it a trusted choice for facilities seeking to adhere to regulatory or corporate safety standards.
Field Engineer’s Notes (From the Trenches)
When installing the 330130-045-02-05, always verify the connector orientation—the ClickLoc connector has a keyed design to prevent incorrect mating. I once saw a site where a contractor forced the connector, bending the pins and causing intermittent signal loss. Use a flashlight to check the alignment before inserting the connector.Another gotcha: keep the cable away from power cables—EMI from nearby power lines can interfere with the eddy current signal. If you must route the cable near power cables, cross them at 90 degrees (not parallel) to minimize interference.If the cable shows signs of wear (e.g., cracked insulation, frayed overbraid), replace it immediately—even minor damage can lead to signal loss or short circuits. I’ve fixed countless “no signal” faults by replacing worn cables.
Real-World Applications
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Power Generation: Steam Turbine MonitoringA coal-fired power plant uses the 330130-045-02-05 to connect a 330905-00-25-02-CN proximity probe (installed on the turbine’s #3 bearing) to a 330980-51-00 proximitor. The proximitor sends vibration data to a 3500/40M monitor, which trips the turbine if amplitude exceeds 10 mils—preventing damage to the turbine blades.
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Oil & Gas: Centrifugal Compressor Protection
An offshore oil platform uses the cable to link a 330901-00-12-10-02-CN proximity probe (compressor shaft) to a 330980-90-00 proximitor. The system triggers a shutdown if axial displacement hits 0.6 inches—avoiding impeller damage and costly downtime.
Bently 330105-02-12-10-02-CN
High-Frequency Troubleshooting FAQ
Q: What is the maximum length of the 330130-045-02-05 cable?
A: The standard length is 4.5 m (14.8 ft). Longer lengths are available as custom orders—contact Bently Nevada or an authorized distributor for details.
Q: Can the 330130-045-02-05 be used with non-Bently proximitors?
A: No, the cable is designed exclusively for Bently Nevada 3300 NSv series proximitors. Non-Bently proximitors may not have the correct input impedance, leading to signal mismatch or damage.
Q: How do I test the cable for continuity?
A: Use a multimeter to measure the resistance between the probe and proximitor ends. The resistance should be ≤ 5 Ω (nominal). If the resistance is infinite, the cable is broken and needs replacement.
Q: What is the operating temperature range of the 330130-045-02-05?
A: The cable operates from -52°C to +177°C (-62°F to 350°F). For applications exceeding 177°C, use a high-temperature version (e.g., 330130-045-02-05-HT).
Commercial Availability & Pricing
Please note: The listed price is not the actual final price. It is for reference only and is subject to appropriate negotiation based on current market conditions, quantity, and availability.
