The Bently Nevada 330104-00-20-05-02-00, also cataloged as the 330104 Proximity Probe, operates as a dedicated hardware component for non-contacting vibration and displacement measurements within the 3300 XL Proximity Transducer System.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330104-00-20-05-02-00 |
| Brand | Bently Nevada |
| Origin | U.S.A. |
| Weight | 0.323 kg |
| Shipping Weight | 1.5 kg |
| Unthreaded Length | 0 mm |
| Overall Case Length | 200 mm |
| Total Length | 5.0 meters (16.4 feet) |
| Connector / Cable Type | Miniature coaxial ClickLoc connector, standard cable |
| Agency Approval | Not required |
| Probe Tip Material | Polyphenylene sulfide (PPS) |
| Probe Case Material | AISI 303 or 304 stainless steel (SST) |
| Operating Temp | -51 deg C to +177 deg C (-60 deg F to +351 deg F) |
Eddy-Current Probe Scaling and Gap Voltage Validation
The 3300 XL 8 mm proximity probe relies on eddy-current technology to determine the physical dynamic or static distance between the probe tip and a conductive target surface. Accurate system scaling requires correct calibration to a specific target material (typically AISI 4140 steel) to achieve a nominal scale factor of 7.87 V/mm (200 mV/mil). During physical loop commissioning, engineers must perform gap voltage validation to ensure the probe operates within its linear range. The target DC gap voltage is typically adjusted to -10 VDC, corresponding to the midpoint of the linear displacement envelope. Proper calibration mitigates signal cross-talk suppression issues when multiple probe cases are installed in close proximity within a machine housing, ensuring that overlapping electromagnetic fields do not introduce errors into the rotor dynamics data stream.
Frequently Asked Questions
Q: What is the significance of the -10 VDC target during physical installation?
A: The -10 VDC value represents the electrical midpoint of the linear range for the 3300 XL 8 mm transducer system. Setting the probe gap to this voltage ensures equal dynamic range for both positive and negative target displacements without clipping the output signal.
Q: Can the ClickLoc connector be disassembled or modified in the field?
A: No, the ClickLoc connector is factory-terminated to maintain precise physical impedance and environmental sealing. Modifying the connector assembly in the field alters the electrical length and total capacitance of the coaxial line, which corrupts the scale factor and system calibration.
Field Installation Guidelines
- Mechanical Mounting and Torque: Thread the probe case into the bracket or housing by hand until the correct physical gap or nominal -10 VDC gap voltage is indicated on a digital voltmeter. Do not exceed the maximum rated installation torque for the AISI 303/304 stainless steel case to prevent mechanical distortion.
- Coaxial Cable Routing and Bend Radius: Maintain a minimum bend radius of 25.4 mm (1.0 inch) for the standard extension cable. Avoid sharp bends, pinches, or routing parallel to high-voltage AC lines to minimize electromagnetic interference and cross-talk suppression issues.
- Connector Torque and Insulation: Connect the ClickLoc miniature coaxial fittings firmly by hand. Use clear heat-shrink tubing or dedicated connector protectors to electrically isolate the connection point from structural machine ground, preventing ground loop interference.
- Target Engagement: Ensure a minimum 5-to-1 engagement ratio for any threaded structural mounting fixtures to verify long-term physical stability against high rotor dynamics or casing vibration.
What's clients say about us
Excellent Emergency Support!
Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.
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Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.
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Engineering Lead, GermanyTop-tier Service and Quality
We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.
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