Bently Nevada 330105-20-12-10-02-00 300 XL 8 mm Reverse Mount Probe
Bently Nevada 330105-20-12-10-02-00 3300 XL 8 mm Reverse Mount Probe
Configured for contactless axial position and radial vibration execution in 3300 XL monitoring platforms, the Bently Nevada 330105-20-12-10-02-00 (330105 Proximity Probe) provides direct physical/electrical execution.
Suffix Breakdown & Model Matrix
- 330105: 3300 XL 8 mm Reverse Mount Probe (3/8-24 UNF threads)
- -20: Unthreaded Length Option (2.0 inches)
- -12: Overall Case Length Option (1.2 inches)
- -10: Total Length Option (1.0 meter / 3.3 feet)
- -02: Connector & Cable Type Option (Miniature ClickLoc coaxial connector, FluidLoc cable)
- -00: Agency Approval Option (Not required / Standard, no hazardous area certification)
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330105-20-12-10-02-00 |
| Brand | Bently Nevada |
| Origin | United States |
| Weight | 0.15 kg |
| Dimensions | 3/8-24 UNF threads, 1.2 in case length, 1.0 m total length |
| Operating Temp | -51 to +177 deg C |
| Power Consumption | Driven by Proximitor Sensor (-18 VDC to -24 VDC supply) |
| Probe Tip Material | Polyphenylene sulfide (PPS) |
| Probe Case Material | AISI 303 or 304 Stainless Steel |
| Connector Material | Gold-plated brass |
| Linear Range | 2.0 mm (80 mils) with matched 3300 XL Proximitor |
| Cable Type | FluidLoc oil/chemical leak blocking standard cable |
Rotor Dynamics and Eddy-Current Probe Scaling
Eddy-current probe scaling maintains a linear sensitivity of 7.87 V/mm (200 mV/mil) when measuring AISI 4140 steel targets across the 2.0 mm operational range. During mechanical commissioning, gap voltage validation targeting -10 VDC verifies correct positioning at the midpoint of the linear voltage curve. Proper physical separation between adjacent 8 mm probe heads eliminates cross-talk suppression issues caused by overlapping high-frequency magnetic fields on high-speed rotating shafts.
Frequently Asked Questions
Q: How does the FluidLoc cable option function compared to standard coaxial lead wires?
A: The FluidLoc cable construction prevents oil and liquid process chemicals from wicking through the internal conductor strands and entering external junction enclosures or control rooms.
Q: What is the target material requirement for maintaining specified probe scaling?
A: The probe is factory calibrated for AISI 4140 steel with a minimum flat target diameter of 15.2 mm (0.6 in) to achieve full linear response without edge effect distortion.
Field Installation Guidelines
- Verify 3/8-24 UNF mounting threads are clean and free of burrs before positioning the reverse mount housing into the machine bracket.
- Set physical gap distance by monitoring Proximitor output voltage, adjusting mechanical insertion depth until obtaining a -10 VDC baseline reading.
- Ensure the FluidLoc cable maintains a minimum bend radius of 25.4 mm (1.0 in) to prevent internal conductor strain or outer sheath damage.
- Insulate the miniature ClickLoc coaxial connector using self-fusing silicone tape or connector protectors to prevent accidental grounding against machine casing.
- Maintain shield integrity by grounding the overall cable shield strictly at the monitor rack end to prevent ground loop current paths.
Bently Nevada 330105-20-12-10-02-00 300 XL 8 mm Reverse Mount Probe
