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Key Technical Specifications
- Part Number: 330105-02-12-05-02-05
- Product Name: 3300 XL 8 mm Reverse Mount Probe
- Brand: Bently Nevada
- Measurement Type: Displacement (static position), vibration (dynamic)
- Technology: Eddy current, non-contact sensing
- Tip Diameter: 8 mm (0.315 in)
- Total Cable Length: 0.5 m (1.6 ft)
- Connector Type: Miniature ClickLoc coaxial connector
- Thread Size: 3/8-24 UNF
- Tip Material: Polyphenylene Sulfide (PPS)
- Case Material: AISI 303/304 Stainless Steel
- Operating Temperature: -51°C to +177°C (-60°F to +351°F)
- Storage Temperature: -51°C to +177°C (-60°F to +351°F)
- Agency Approvals: Multiple Approvals (CSA, ATEX, IECEx)
- Linear Range: Compliant with API 670 (4th Edition)
- Sensitivity: 3.5 V/mm (typical for 3300 XL 8 mm system)
- Frequency Response: 0 Hz to 10 kHz (typical)
- Weight: 0.323 kg
- Country of Origin: United States (USA)
- HS Code: 85389091
- Interchangeability: Compatible with other 3300 XL and non-XL 5 mm and 8 mm probes, extension cables, and Proximitor sensors
- Mounting Type: Reverse mount design for confined spaces
Product Introduction
Bently Nevada 330105-02-12-05-02-05 is a 3300 XL 8 mm Reverse Mount Proximity Probe for non-contact measurement of displacement, position, and vibration in rotating machinery. It uses eddy current sensing to generate an output voltage proportional to the distance between the probe tip and the conductive target surface.
The reverse-mount design with 3/8-24 UNF thread, 0.5 m cable, Miniature ClickLoc coaxial connector, and multiple agency approvals (CSA/ATEX/IECEx) enables installation in confined spaces on fluid-film bearing machines. The probe is fully API 670-compliant and interchangeable with other 3300 XL and non-XL probes, extension cables, and Proximitor sensors.worldofcontr
- 330105-02-12-05-02-05
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No output voltage from probe | Probe not powered or damaged | ✅ High | Measure supply voltage at the Proximitor conditioner; check for continuity in cable | Verify conditioner power and cable integrity before replacing probe |
| Output voltage stuck at max/min | Probe tip damaged, coated, or wrong gap | ✅ High | Inspect probe tip for damage or debris; measure probe-to-target gap | Clean/replace tip or re-set gap to 1.0 mm (40 mils) nominal before replacing |
| Signal noisy or unstable | Loose connector, broken cable, or EMI | ✅ High | Check ClickLoc connector tightness; inspect cable for breaks; verify shield grounding | Repair cable/connector and ground shield at one end only |
| Output does not match expected gap | Incorrect sensitivity setting in conditioner | ✅ Medium | Verify Proximitor conditioner sensitivity (3.5 V/mm for 8 mm) | Adjust conditioner sensitivity to match probe type |
| Probe reads 0 V or no change with movement | Open circuit in probe or connector | ✅ High | Measure resistance across probe terminals; check for continuity | Replace probe if open circuit confirmed |
| Probe case corroded or thread damaged | Harsh environment or physical damage | ❌ Low | Inspect case and thread for corrosion or cracks | Replace probe if physical damage is evident |
Contact technical support with photos of the probe tip, connector, cable, mounting, and any Proximitor conditioner readings if the fault is still unclear.
Frequently Asked Questions
Can I use 330105-02-12-05-02-05 as a direct replacement for an older 3300 XL probe?
Yes. The 3300 XL 8 mm system is fully interchangeable with other 3300 XL and non-XL 5 mm and 8 mm probes, extension cables, and Proximitor sensors. The -05-02-05 suffix adds 0.5 m cable, ClickLoc connector, and multiple agency approvals.
Is this probe hot-swappable?
This is a transducer probe, not a rack module. You can disconnect and reconnect it without removing a rack card, but you should consider whether the Proximitor conditioner input is live and follow your site’s electrical safety procedure when handling live circuits.
What is the reverse-mount design for?
The reverse-mount configuration with 3/8-24 UNF thread enables installation in confined spaces where a standard front-mount probe would not fit.
Why is surplus stock cheaper than factory new?
Surplus parts often come from excess inventory, decommissioned systems, or channel stock. The price is lower, but you still need a clear test record and condition statement (New Original, New Surplus, or Refurbished tested).
What condition should I expect on a surplus unit?
For a credible sale listing, state whether it is New Original, New Surplus, or Refurbished (tested). Buyers in this market want the truth up front, not a vague “used” label. Probes are sensitive to tip damage and cable integrity.
Does this part fail often?
Not usually. More often, probe tip damage, coating/debris on the tip, wrong gap setting, loose connector, broken cable, or Proximitor conditioner issues cause the fault. Always inspect the tip, check the gap (1.0 mm nominal), and verify the conditioner before replacing the probe.
What certifications does this probe have?
The -05 suffix includes multiple approvals: CSA, ATEX Zone 1, and IECEx, making it suitable for hazardous areas in oil/gas, chemical, and power generation applications.
