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The 330102-40-70-10-02-00 is a 3300 XL 8 mm eddy current proximity probe compliant with API 670 standards, developed for shaft vibration and position monitoring of heavy rotating machinery. This specific configuration features a 3/8-24 UNF imperial thread, a 4.0 inch unthreaded length, a 7.0 inch overall case length, and a 1.0 meter or 3.3 feet integrated coaxial cable fully enclosed in a flexible stainless steel armor jacket with a Miniature Coaxial ClickLoc connector.
Robust Flexible Stainless Steel Armor Protection
API 670 Interchangeability Eliminates Bench Calibration
Extended Imperial Case for Deep Hole and Insulation Penetration
The system provides an output voltage that is directly proportional to the distance between the probe tip and the observed conductive surface and can measure both static position and dynamic vibration values. The system’s primary applications are vibration and position measurements on fluid-film bearing machines, as well as Keyphasor reference and speed measurements.
The 3300 XL 8 mm system delivers the most advanced performance in our eddy current proximity transducer systems. The standard 3300 XL 8 mm 5-meter system also fully complies with the American Petroleum Institute API 670 Standard for mechanical configuration, linear range, accuracy, and temperature stability.
All 3300 XL 8 mm proximity transducer systems provide this level of performance and support complete interchangeability of probes, extension cables, and Proximitor sensors, eliminating the need to match or bench calibrate individual components. Each component is backward compatible and interchangeable with other non-XL 3300 series 5 mm and 8 mm transducer system components.
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 330102-40-70-10-02-00 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.
Oil & Gas Imperial Standard Compressors
Used in high pressure natural gas centrifugal compressors originally produced in Europe and America, where the long case smoothly penetrates the heavy double casings of the unit, and the armor layer protects the cable from accidental maintenance tool impacts in the field.
Petrochemical & Heavy Duty High Pressure Pumps
Installed on high load feed pumps in hydrocracking units, where the long case is suitable for imperial bearing housings with deep hole monitoring structures, preventing excessive axial displacement during high speed operations.
Thermal Power Large Steam Turbines with Insulation Layers
Monitors the radial vibration of steam turbine rotors in large generator sets, where the 7.0 inch case length easily spans across the wide thermal insulation layer on the outside of the unit to deliver the sensor tip accurately to the internal bearing pad.
Hydroelectric Power Vertical Hydro Turbines Deep Hole Monitoring
Monitors the runout and thrust displacement of large hydro generator shafts, where the long case extends vertically to the shaft surface through deep hole brackets, and the armored cable effectively resists high humidity water mist in the galleries.
Steel Smelting & Hot Rolling Mills High Temperature Environments
Monitors the mechanical conditions of blast furnace main blowers and hot rolling gearbox bearings, where the extended case routes the connector out of the core high temperature zone, and the armor layer resists splashing trace high temperature scale.
Pulp & Paper Heavy Duty Pressing Machinery
Monitors wear and alignment states of high speed dryer bearings in paper machines, where the long case facilitates penetration through external double sealing panels, and the armor layer resists high pressure water hose cleaning and humid steam.
Due to its 7.0 inch overall case length and 4.0 inch unthreaded length, specialized locknuts must be utilized to secure the probe firmly during imperial deep hole or bearing housing installations, preventing position drift under high vibration conditions. Precisely adjust the initial mounting gap to the center of its linear range, typically corresponding to minus 10 Vdc, and maintain a side physical clearance of at least twice the probe tip diameter to eliminate electromagnetic interference from surrounding metals.
During routing, although the cable is protected by an integrated stainless steel armor jacket, excessive pulling and sharp kinks must still be strictly avoided to ensure the bend radius stays above 25.4 mm. Before connecting the Miniature Coaxial ClickLoc connector, the core connecting interface must be kept completely clean and dry, and it must be tightened by hand only—never use tools.
Lastly, since this probe features a 1.0 meter cable, it must be combined with a matching 4.0 meter extension cable to connect to the Proximitor sensor, ensuring the measurement accuracy of the complete 5 meter system.
The Bently Nevada 330102-40-70-10-02-00 is an imperial threaded proximity eddy current probe belonging to the 3300 XL 8 mm series, primarily utilized for axial displacement, radial vibration, and Keyphasor phase reference monitoring of large industrial rotating machinery. Operating on eddy current principles, the product generates a high frequency electromagnetic field from the probe tip to interact with the observed metal shaft surface, providing an analog voltage signal directly proportional to the distance between the probe tip and the target conductive surface while simultaneously measuring both static position and dynamic vibration values.
It is a Bently Nevada brand 3300 XL series 8 mm imperial threaded proximity eddy current probe with integrated stainless steel armor, primarily used to measure the vibration and displacement of rotating shafts in industrial machinery.
What is the specific purpose of the 7.0 inch overall case length of 330102-40-70-10-02-00?
This long case specification is intended for heavy rotating machinery bearing housings that require penetration through thick mechanical casings, deep hole brackets, or external insulation layers.
How to use eddy current probe products like 330102-40-70-10-02-00?
It must be threaded into the probe mounting hole on the machinery bearing housing using its imperial thread, with the probe tip facing the metal shaft surface, and the other end must connect to a Proximitor via an extension cable.
What material is the probe tip of 330102-40-70-10-02-00 made of?
Its probe tip is made of polyphenylene sulfide, a high performance engineering plastic known for its high chemical stability and insulating properties.
What is the average scale factor of the 330102-40-70-10-02-00 output signal?
The average scale factor of the 330102-40-70-10-02-00 output signal is 7.87 V/mm (200 mV/mil).
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