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Product Introduction
The Bently Nevada 21747-040-00 is a high-performance probe extension cable used in conjunction with the Bently Nevada proximity transducer systems. It is part of the trusted 7200 series and plays a critical role in extending the distance between the proximitor sensor and its monitor, without compromising signal quality or system integrity. Designed to maintain optimal electrical characteristics over extended lengths, this cable enables accurate vibration and position measurements in demanding industrial environments.
Bently Nevada, a pioneer in machinery condition monitoring, ensures each component—such as the 21747-040-00 extension cable—meets rigorous industrial and safety standards. This model is often paired with proximity probes like the 3300 XL series and transducers, providing a complete monitoring system for critical rotating machinery such as turbines, compressors, and pumps.
Product Specifications
| Parameter | Specification |
|---|---|
| Model Number | 21747-040-00 |
| Product Type | Proximitor Probe Extension Cable |
| Series | Bently Nevada 7200 Series |
| Cable Length | 4.0 meters (13.12 feet) |
| Connector Type | Miniature coaxial connectors (matching 7200 series) |
| Cable Type | Coaxial, double-shielded |
| Jacket Material | Fluoropolymer (Teflon-based) |
| Operating Temperature | -51°C to +177°C (-60°F to +350°F) |
| Insulation Resistance | >10⁹ ohms |
| Characteristic Impedance | 50 ohms |
| Frequency Range | 0 – 10 kHz |
| Signal Attenuation | < 2% over full cable length |
| EMI/RFI Shielding | High-level shielding for electrical noise immunity |
| Vibration Tolerance | 20 g, 10–2000 Hz |
| Weight | 0.181 kg |
| Dimensions (Cable Diameter) | ~5.5 mm |
| Compliance | RoHS, CE |
| Typical Pairing | With 3300 XL Proximity Probes and 7200 Transducers |
Product Applications
The Bently Nevada 21747-040-00 is primarily used in the following applications:
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Turbomachinery Monitoring: Turbines, compressors, and large motors where precise shaft vibration and displacement monitoring is critical.
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Condition Monitoring Systems: Integration into continuous online monitoring systems for critical rotating assets.
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Predictive Maintenance Programs: Used as part of predictive diagnostics to reduce unplanned outages and extend asset life.
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Hazardous Environment Installations: With its high temperature tolerance and robust design, it is well-suited for oil & gas, power generation, and chemical processing facilities.
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OEM Equipment: Installed by machinery manufacturers in original configurations to ensure long-term monitoring compatibility.
Product Advantages
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Reliable Signal Transmission: Designed to preserve the integrity of the proximity signal over extended distances.
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Rugged Construction: Resistant to harsh industrial conditions including vibration, heat, and electromagnetic interference.
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Seamless Integration: Fully compatible with Bently Nevada proximity systems such as 3300 XL, 7200 series proximitor systems.
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Enhanced Safety: With high insulation resistance and shielding, it ensures operator safety and system reliability.
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Flexible Length Configuration: The 4-meter length offers installation flexibility without requiring multiple connections.
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Industry-Proven Quality: Backed by Bently Nevada’s legacy of performance in critical asset protection solutions.
Frequently Asked Questions (FAQ)
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Q: What systems are compatible with the 21747-040-00 cable?
A: It is compatible with Bently Nevada 7200 series proximitor sensors and the 3300 XL proximity probes. -
Q: Can this extension cable be used in high-temperature environments?
A: Yes, it operates in temperatures ranging from -51°C to +177°C, making it suitable for most industrial conditions. -
Q: Is the 21747-040-00 cable shielded against electrical interference?
A: Absolutely. It features high-level EMI/RFI shielding to protect against electrical noise. -
Q: How is the cable terminated?
A: The cable is terminated with miniature coaxial connectors designed to match Bently Nevada transducer systems. -
Q: What is the typical weight of the 21747-040-00?
A: The cable weighs 0.181 kg. -
Q: What maintenance is required for this cable?
A: It requires minimal maintenance. Periodic inspections for physical integrity are recommended. -
Q: Is this cable RoHS compliant?
A: Yes, it complies with RoHS directives and CE marking requirements. -
Q: What is the impedance of the cable?
A: It maintains a consistent 50-ohm impedance throughout its length. -
Q: Can it be installed in hazardous zones?
A: Yes, due to its robust insulation and shielding, it is often used in classified or hazardous environments. -
Q: What is the part number format for ordering different lengths?
A: Bently Nevada uses a standardized part number system where the last three digits indicate the cable length in feet or meters, depending on region or customer specification.
Related Models from the Same Series or Application
| Model Number | Description | Cable Length | Compatibility |
|---|---|---|---|
| 21747-020-00 | Probe Extension Cable for 2.0 meters | 2.0 m | 7200/3300 XL Systems |
| 21747-030-00 | Probe Extension Cable for 3.0 meters | 3.0 m | 7200/3300 XL Systems |
| 21747-050-00 | Probe Extension Cable for 5.0 meters | 5.0 m | 7200/3300 XL Systems |
| 21747-070-00 | Probe Extension Cable for 7.0 meters | 7.0 m | 7200/3300 XL Systems |
| 330130-040-00 | 3300 XL 4.0 Meter Extension Cable | 4.0 m | 3300 XL Proximity System |
| 330130-080-00 | 3300 XL 8.0 Meter Extension Cable | 8.0 m | 3300 XL Proximity System |
Popular Models from Bently Nevada Brand
| Model Number | Description | Application | Type |
|---|---|---|---|
| 330104-00-05-10-02-00 | 3300 XL Proximity Probe | Shaft Vibration Monitoring | Proximity Probe |
| 330180-91-00 | 3300 XL NSv Proximitor | Small Shaft Vibration | Proximitor Sensor |
| 3500/22M-01-01-00 | Transient Data Interface Module | Condition Monitoring | Module |
| 3500/15-05-01-00 | Power Supply Module (High Voltage) | 3500 Series Racks | Power Module |
| 3500/42M-01-00 | Vibration Monitor Module | Machinery Protection Systems | Monitor Module |
| 146031-01 | TDI Cable Assembly | Transient Data Interface Cabling | Communication Accessory |
