The Bently Nevada 330104-00-10-10-02-CN serves as a precision-engineered eddy current sensor within the 3300 XL 8mm Proximity Transducer System. This probe captures critical shaft vibration and displacement data from high-speed rotating machinery, such as steam turbines, centrifugal compressors, and large-scale motors. By maintaining a non-contact relationship with the target shaft, the sensor eliminates mechanical wear while delivering high-fidelity analog signals proportional to the physical gap.
As a foundational component of Turbine Supervisory Instrumentation (TSI), this 3300 XL probe identifies microscopic mechanical instabilities—including shaft unbalance, misalignment, and bearing degradation—long before they escalate into catastrophic failures. Its specialized 8mm tip provides a linear range of 2.0 mm (80 mils), ensuring comprehensive oversight of axial position and radial vibration in the most demanding oil, gas, and power generation environments.
The 330104-00-10-10-02-CN utilizes a modular coding structure to define its mechanical fit and regional compliance:
The -00 indicates a 0.0-inch unthreaded length. This configuration provides a fully threaded probe body (3/8-24 UNF), allowing for maximum mounting flexibility and stability when installing through machine casings.
This specifies a 1.0-inch overall case length. The compact 330104 housing facilitates installation in tight clearances where space between the mounting port and the shaft is restricted.
The -10 designates a 1.0-meter (approx. 3.3 feet) total system length. Because eddy current systems are electrically tuned, this 1.0m probe must pair with a compatible 4.0m or 8.0m extension cable to match the Proximitor’s 5.0m or 9.0m calibration.
The -02 option provides a miniature coaxial ClickLoc connector with a connector protector to prevent fluid ingress. The -CN suffix signifies specialized China-specific agency approvals, certifying the unit for safe operation in hazardous industrial areas within the Chinese market.
| Feature | Specification Details |
| Probe Tip Diameter | 8.0 mm (0.315 in) |
| Linear Range | 2.0 mm (80 mils) |
| Nominal Sensitivity (ISF) | 7.87 V/mm (200 mV/mil) |
| Thread Size | 3/8-24 UNF-2A |
| Operating Temperature | -51 °C to +177 °C (-60 °F to +351 °F) |
| Linearity Error | Less than ±5% of ideal straight line |
| Pressure Rating | Sealing up to 70 psi (4.8 bar) |
| Certifications | CN Approvals (China Hazardous Area) |
Achieving laboratory-grade accuracy in industrial environments requires strict adherence to gapping and routing standards:
The system requires a precise "Static Gap" setting using a Digital Multimeter (DMM). For the 3300 XL 8mm system, the center of the linear range corresponds to -10.0 VDC. Rotate the probe within its mounting until the Proximitor output reaches this value while the shaft remains at its rest position before tightening the locknuts.
Coaxial leads are sensitive to physical deformation. Maintain a minimum bend radius of 25.4 mm (1.0 inch). Always protect the cable lead with flexible conduit and avoid running leads parallel to high-voltage AC lines to prevent electromagnetic interference (EMI) from corrupting the vibration signal.
Utilize the ClickLoc connector protector at all times. Moisture or oil ingress into the coaxial junction is the primary cause of signal drift. Ensure the connectors are clean and dry before sliding the protector sleeve over the connection.
Superior PPS Tip Construction: The probe tip utilizes Polyphenylene Sulfide (PPS), a high-performance thermoplastic that resists chemical corrosion and maintains structural integrity across extreme thermal cycles.
TSI Seamless Integration: This probe interfaces natively with the Bently Nevada 3500 series monitoring racks, ensuring data flows instantly into System 1 software for comprehensive diagnostics.
Gold-Plated ClickLoc Connectors: Gold-plated contacts ensure low-resistance signal transmission and prevent oxidation, a critical feature for high-humidity environments.
CN Approval Compliance: The specialized -CN suffix ensures the probe meets local regulatory requirements in China, facilitating smooth project inspections and legal compliance.
Q1: What does the -CN suffix represent?
A1: The -CN suffix indicates that the probe carries specialized certifications and approvals required for hazardous area installations in China. It maintains the same technical performance as the standard 330104 but meets specific regional compliance standards.
Q2: Does this probe require an Ethernet router?
A2: No. This is a common database clerical error. The 330104-00-10-10-02-CN is an analog eddy-current sensor. It provides a raw signal to a Proximitor. Digital networking (Ethernet) only occurs at the 3500 Monitoring Rack level.
Q3: Can I use this 1.0m probe with a standard 5.0m system?
A3: Yes, provided you pair it with a 4.0-meter extension cable. The total electrical length (Probe + Cable) must equal the calibration of the Proximitor (e.g., 5.0m total) to maintain the correct 200 mV/mil sensitivity.
Q4: How do I verify the health of the 330104 probe?
A4: Measure the DC resistance between the center pin and the outer shield of the coaxial connector. A healthy 1.0m probe lead typically reads between 5.0 Ω and 9.0 Ω. An infinite reading indicates an open circuit, requiring probe replacement.
