The Bently Nevada 330704-000-100-10-02-00 is a 3300 XL 11mm proximity probe with 1/2-20 threads and a 1.0m armored cable. It offers an extended linear range for monitoring large turbines and compressors in harsh industrial environments.
The Bently Nevada 330704-000-100-10-02-00 provides high-resolution non-contact measurements for critical industrial machinery. As an 11mm proximity probe, it offers a wider linear range than standard 8mm sensors. This increased range proves essential when tracking large shaft displacements or thermal expansions. The probe detects radial vibration and axial position with extreme precision. Consequently, it serves as a primary input for protective monitoring systems. Its design ensures that operators receive early warnings of mechanical instability. Therefore, facilities can avoid catastrophic failures and optimize maintenance intervals.
The model code 330704-000-100-10-02-00 defines specific mechanical and electrical properties. The -000- option indicates a standard 1/2-20 UNF threaded body without unthreaded length. Furthermore, the -100- suffix specifies a case length of 10.0 inches for deep-reach installations. The -10- segment provides a 1.0-meter integrated cable for connection to extension leads. Additionally, the -02- armored option includes a stainless steel conduit for physical protection. This robust armor shields the cable from mechanical abrasion and fluid contamination.
Industrial monitoring sites often face extreme heat and electromagnetic interference. Therefore, Bently Nevada utilizes advanced polyphenylene sulfide (PPS) for the probe tip. This material resists chemical erosion from oils and acidic solvents effectively. The probe functions reliably across a temperature range of -51°C to +177°C. Moreover, the 3300 XL series features superior RFI/EMI immunity for clean signal transmission. The gold-plated ClickLoc connectors provide a secure, low-resistance electrical link. These characteristics guarantee stability in the most challenging industrial conditions.
Power plants and refineries deploy this 11mm probe on heavy rotating equipment. It is particularly effective for monitoring large steam and gas turbines. Furthermore, the extended linear range supports thrust position measurements on massive centrifugal compressors. This hardware integrates seamlessly with 3500 series machinery protection racks. The armored cable allows for safe installation near hot surfaces and moving parts. Reliable data collection remains vital for maintaining high-availability industrial operations.
The 330704-000-100-10-02-00 adheres to strict global safety and quality standards. It carries multiple certifications for use in hazardous areas and explosive atmospheres. Additionally, the SpringLoc terminal compatibility ensures fast and secure field wiring. Precise gapping remains simple due to the consistent voltage-to-distance output curve. This accuracy supports sophisticated diagnostics through System 1 software integration. Using this probe maximizes the lifespan and safety of critical production assets.
| Feature | Detailed Specification |
| Probe Tip Diameter | 11 mm |
| Thread Pitch | 1/2-20 UNF-2A |
| Case Length | 10.0 inches (254 mm) |
| Total Cable Length | 1.0 Meter (3.3 feet) |
| Cable Shielding | Stainless Steel Flexible Armor |
| Linear Range | 4.0 mm (160 mils) approximately |
The Bently Nevada 330703-00-100-10-11-CN is an 11 mm eddy current proximity probe designed for non-contact displacement and vibration measurement on rotating machinery. It functions as a core component of the 3300 XL 11 mm Transducer System, which also includes a matched extension cable and a 3300 XL 11 mm Proximitor Sensor. The system operates on the eddy current principle, where the Proximitor Sensor emits a high-frequency radio frequency (RF) signal through the probe and extension cable. This signal radiates from the probe tip, creating an electromagnetic field. When a conductive target, such as a machine shaft, enters this field, eddy currents are induced on its surface. These currents create a secondary magnetic field that opposes the primary field, causing a measurable change in the RF signal's impedance. The Proximitor Sensor demodulates this signal to produce a DC voltage directly proportional to the gap between the probe tip and the target surface. This analog voltage signal is then transmitted to a monitoring system, such as the Bently Nevada 3500 series, for real-time analysis of radial vibration, axial position, and shaft speed. The 330703-00-100-10-11-CN features a robust stainless steel case and a chemically resistant Polyphenylene Sulfide (PPS) tip, ensuring reliability in harsh industrial environments.
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Part Number | 330703-00-100-10-11-CN |
| Product Type | 3300 XL 11 mm Proximity Probe |
| Condition | Brand New |
| Warranty | 12 Months |
| Linear Range | 4.0 mm (160 mils) |
| Scale Factor | 2.00 mV/µm (50 mV/mil) ± 6.5% |
| Total Length | 1.0 metre |
| Probe Tip Material | Polyphenylene Sulfide (PPS) |
| Probe Case Material | AISI 304 Stainless Steel |
| Connector Type | Miniature coaxial ClickLocâ„¢ connector, gold-plated |
| Agency Approval | CN Ex (China Ex) for hazardous area installations |
The 330703-00-100-10-11-CN proximity probe is engineered for high reliability in demanding industrial applications, particularly within Oil & Gas and Power Generation sectors. Its 11 mm tip provides a larger linear measurement range and is well-suited for monitoring large shaft diameters or applications requiring a greater standoff distance. The probe's construction ensures operational integrity across a wide temperature range, with the probe tip rated for -51 °C to +177 °C (-60 °F to +351 °F). The 3300 XL system design provides enhanced immunity to radio frequency interference (RFI/EMI), minimizing the risk of signal corruption from nearby motors, generators, or radio sources. The gold-plated ClickLoc™ connector ensures a secure, corrosion-resistant connection that prevents intermittent signals caused by vibration. When installed and maintained according to manufacturer specifications, the system demonstrates high Mean Time Between Failures (MTBF) and is a critical component for machinery protection systems (MPS) and condition monitoring programs, compliant with standards such as API 670.
Q: What systems is the 330703-00-100-10-11-CN compatible with?
A: The 330703-00-100-10-11-CN probe must be used as part of a complete Bently Nevada 3300 XL 11 mm Transducer System. This requires a matching 3300 XL 11 mm Proximitor Sensor (e.g., part number 330780) and a 3300 XL 11 mm extension cable. It is not interchangeable with components from 5 mm or 8 mm transducer systems, as the scale factor and linear range are different. The complete transducer system provides a voltage output compatible with Bently Nevada monitoring systems, including the 3500 and 3300 series, as well as third-party PLCs, DCS, and data acquisition systems designed to accept a 3-wire, -24 Vdc powered eddy current probe input.
Q: What are the installation requirements?
A: Proper installation is critical for accurate measurements. The probe must be mounted perpendicular to the observed shaft surface using a rigid bracket. The target area on the shaft must be smooth (typically 0.4 to 0.8 µm / 16 to 32 µin Ra), free of chrome or other non-conductive plating, and clear of any residual magnetism or electrical runout. The probe must be gapped correctly by adjusting its distance to the shaft until the Proximitor Sensor output voltage is at the center of the linear range, typically -10.0 Vdc. The probe case locknut should be torqued to the specified value to prevent loosening. The integral cable and any extension cable should be secured to avoid strain on the connectors and routed away from high-voltage power cables to minimize interference.
The Bently Nevada 330104-00-14-10-11-00 Proximity Probes is a genuine industrial component.
| Condition | New |
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