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The 330710-000-050-50-02-00 is a 3300 XL 11 mm eddy current proximity probe manufactured by Bentley Nevada, USA. It is primarily used for vibration and displacement monitoring in large rotating machinery.
Axial (thrust) position measurements
Tachometer and zero speed measurements
Phase reference (Keyphasor) signals
The 3300 XL 11 mm Proximity Transducer System has a 3.94 V/mm (100 mV/mil) output for non-contacting vibration and displacement measurements on fluid film bearing machines. The large 11 mm tip enables this transducer system to have a longer linear range compared to our standard 3300 XL 8 mm Transducer System. The 3300 XL 11 mm Proximitor Sensor is designed to replace the 7200-series 11 mm and 14 mm Transducer Systems. When upgrading from the 7200-series system to the 3300 XL 11 mm system, every component must be replaced with 3300 XL 11 mm components. In addition, the monitoring system must be updated. If using a 3500 Monitoring System, an updated version of the configuration software that lists the 3300 XL 11 mm Transducer System as a compatible option is required.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Bently Nevada 330710-000-050-50-02-00 Proximity Probe Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Power Generation
Used to monitor the large-range thrust displacement of main shafts in large steam and gas turbines, preventing catastrophic rotor-to-stator collisions caused by thermal expansion or sudden load changes.
Oil & Gas
Used on centrifugal compressors along long-distance gas pipelines to monitor radial dynamic vibration of rotors under high-pressure, high-speed operation, ensuring delivery chain safety.
Petrochemical & Refining Industry
Deployed on large high-speed turbine-driven pumps in hydrogenation and cracking units to monitor journal bearing clearances and shaft runout through non-contact measurement penetrating the oil film.
Hydroelectric Power
Installed on vertical or horizontal shafts of large hydro-generator units. Since hydro turbine bearing clearances are typically large, the 11mm probe's wide range is ideal for monitoring low-speed, high-amplitude shaft orbit and runout.
Pulp & Paper
Deployed on the bearing support systems of large-diameter Yankee dryers and drying cylinders at the core of paper production lines to monitor thermal displacement and bearing wear under high-temperature operation.
When using the 330710-000-050-50-02-00 probe, the core focus lies in "precise installation" and "signal protection". First, the initial installation gap must be accurately calibrated to the center voltage of the linear range (approx. -10 VDC) using a multimeter, ensuring at least 3mm of clearance around the probe tip to prevent metal interference. Meanwhile, during routing, never over-bend the cable (bending radius > 25.4 mm), keep the connectors clean and fully locked, and ensure proper grounding of the armor to completely eliminate signal attenuation and electromagnetic interference.
This is a 3300 XL series 11mm eddy current non-contact proximity probe manufactured by Bently Nevada. It is primarily used to measure the vibration and relative displacement of rotating shafts in large industrial machinery.
How does a proximity sensor like 330710-000-050-50-02-00 work?
The high-frequency coil inside the probe tip generates an alternating magnetic field. When a metallic shaft approaches, eddy currents are induced on its surface, changing the field energy. The Proximitor sensor detects this change and converts it into a voltage signal proportional to the gap
What is the installation torque requirement for 330710-000-050-50-02-00?
The maximum rated thread torque for its M16x1.5 thread is 63.3 N·m. A torque wrench is recommended to avoid over-tightening and damage.
What are the maintenance precautions for 330710-000-050-50-02-00?
Regularly check the probe tip for metal debris buildup (which causes interference), keep the connector clean and dry, and ensure the cable bend radius is never less than 25.4 mm to avoid internal damage.
What are the primary industrial applications for 330710-000-050-50-02-00?
It is mainly used in heavy machinery like hydroelectric turbines, steam turbines, steel rolling mills, and large compressors to monitor axial (thrust) position, differential expansion, and keyphasor signals.
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Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
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