Description
Bently Nevada 330105‑02‑12‑10‑02‑00 — 3300‑XL 8 mm Reverse‑Mount Eddy‑Current Proximity Probe
Product Overview
The 330105‑02‑12‑10‑02‑00 is a non‑armored reverse‑mount eddy‑current proximity probe within Bently Nevada 3300‑XL 8 mm transducer family. It converts physical gap displacement between probe tip and metallic rotating target into impedance signals for matching proximitor module. Compliant with API 670, this reverse‑mount probe performs radial vibration, axial thrust‑position and auxiliary Keyphasor reference measurements for critical turbomachinery protection and predictive condition‑monitoring applications. Designed for rear‑of‑casing installation where front‑side machine access is restricted.
Critical Compatibility Warning
- Only compatible with 3300‑XL 8 mm proximitor (330180‑xx‑00) and 330130 series ClickLoc extension cables.
- Not interchangeable with 11 mm probe series or NSv transducer series.
- Total system cable length = probe integral pigtail length + extension cable length, must strictly match the rated total‑system length of paired 8 mm proximitor. Incorrect total cable length will cause scale‑factor deviation and measurement error.
- Works with 3500/42M, 3300/12, 3300/15 monitor racks for alarm, trip and trending functions.
Part Number Decoding
- 330105：3300‑XL 8 mm proximity probe, reverse‑mount type, non‑armored
- ‑02：Reverse‑mount thread specification: 3/8‑24 UNF
- ‑12：Unthreaded body length =12 mm
- ‑10：Integral pigtail cable length =1.0 m
- ‑02：ClickLoc miniature coaxial connector
- ‑00：Non‑intrinsically‑safe standard version, without ATEX / IECEx / CSA hazardous‑area certifications
330105-02-12-10-02-00
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | 330105‑02‑12‑10‑02‑00 |
| Series | 3300‑XL 8 mm Reverse‑Mount Proximity Probe |
| Probe Tip Diameter | 8 mm |
| Mounting Thread | 3/8‑24 UNF (reverse‑mount) |
| Unthreaded Body Length | 12 mm |
| Integral Pigtail Cable Length | 1.0 m |
| Connector Type | ClickLoc miniature coaxial connector |
| Scale Factor | 7.87 V/mm (200 mV/mil), calibrated for AISI‑4140 steel target |
| Linear Measurement Range | 2.0 mm (80 mils) |
| Recommended Operating Gap | 1.27 mm (50 mils) |
| Frequency Response | 0 Hz ~ 10 kHz |
| Operating Temperature Range | ‑35 °C ~ +175 °C |
| Certifications | Standard non‑IS version, no hazardous‑area approvals |
| Housing Material | Stainless‑steel body, PPS tip insulator |
| Calibration Target | Factory calibrated on AISI‑4140 steel |
| Country of Origin | USA |
| Weight | ≈0.19 kg |
Main Features
- API‑670‑compliant 3/8‑24 UNF reverse‑mount probe: Optimized for rear‑side casing installation when front‑side access is unavailable. Fully interoperable with standard 3300‑XL 8 mm transducer chain; incompatible with 11 mm and NSv series components.
- 12 mm unthreaded body segment: Compact reverse‑mount mechanical profile, fits standard turbomachinery rear‑access bore holes.
- 1.0 m built‑in pigtail cable: Short pre‑attached cable, flexible to achieve required total‑system length by mating with ClickLoc extension cables.
- Standard 2.0 mm linear measurement range: Suitable for shaft radial vibration and axial thrust‑position monitoring.
- Wide operating temperature tolerance ‑35 °C ~ +175 °C: Resists oil‑mist and high‑temperature casing environment within non‑hazardous machinery compartments.
- ClickLoc quick‑lock coaxial interface: Provides stable, low‑noise connection with 330130‑xx‑xx‑00 extension cables.
- Non‑intrinsically‑safe standard unit: For use in safe, non‑classified industrial areas only.
- Good interchangeability within 3300‑XL 8 mm family, no mandatory component‑pairing requirement.
Typical Application Scenarios
- Steam / gas turbine vibration & thrust‑position protection loops with rear‑side casing access only, non‑hazardous area
- Refinery & petrochemical centrifugal compressors located in safe‑area adopting reverse‑mount probe layout
- Large critical pumps, blowers and gearbox condition‑monitoring systems in non‑classified industrial locations
- Auxiliary Keyphasor phase‑reference and shaft‑speed measurement for reverse‑mount mechanical layout
- Indoor power‑plant machinery monitoring without explosive‑atmosphere requirements
- Spare‑part replacement for existing non‑IS 3300‑XL reverse‑mount transducer loops
Related & Recommended Alternative Models
| Model | Description |
|---|---|
| 330105‑02‑12‑10‑12‑05 | Reverse‑mount probe,12 mm unthreaded body,1.0 m pigtail, Microdot, IS‑certified |
| 330105‑02‑12‑05‑02‑00 | Reverse‑mount probe,12 mm unthreaded body,0.5 m pigtail, ClickLoc, non‑IS |
| 330105‑02‑12‑20‑02‑00 | Reverse‑mount probe,12 mm unthreaded body,2.0 m pigtail, ClickLoc, non‑IS |
| 330130‑xx‑02‑00 | 8 mm ClickLoc extension‑cable series |
| 330180‑05‑00 | 8 mm proximitor, total 5 m system length, DIN‑rail mount |
| 330180‑07‑00 | 8 mm proximitor, total 7 m system length, DIN‑rail mount |
| 330180‑09‑00 | 8 mm proximitor, total 9 m system length, DIN‑rail mount |
| 330180‑12‑00 | 8 mm proximitor, total 12 m system length, DIN‑rail mount |
Compatible Components & Accessories
- ClickLoc extension cables: 330130‑xx‑02‑00 series. Total system length = probe 1.0 m + extension cable = proximitor rated total length.
- Matched 8 mm proximitor: 330180‑xx‑00 DIN‑rail proximitor sensor.
- Monitor hardware: Bently 3500/42M, 3300/12, 3300/15 monitor racks.
- Mounting parts: 3/8‑24 UNF lock‑nut for reverse‑mount probe securing.
- Calibration test fixture: 8 mm static gap calibration rig for pre‑commission validation.
- Torque wrench: Special torque tool for ClickLoc connector tightening.
Installation and Configuration Guide
Warning: Installation must be performed by qualified instrumentation technicians. Always refer to original Bently Nevada 3300‑XL official manual as primary reference document. This non‑IS probe shall NOT be installed within explosive hazardous classified zones.
- Mechanical Reverse‑Mount Probe Installation
- Insert the probe from casing rear side through 3/8‑24 UNF bore hole; fasten lock‑nut on outer threaded section after gap setting.
- Maintain probe‑tip perpendicular alignment against metallic shaft target; tilt angle will degrade linear‑range performance and measurement accuracy.
- Ensure sufficient mechanical clearance; prevent probe‑to‑rotor collision under full shaft thermal‑growth and vibration excursion.
- Connector Mating & Torque Control
- Align ClickLoc pin positions before insertion; do not force connector mating.
- Tighten ClickLoc connector to manufacturer‑specified torque value. Over‑torque will damage pins; under‑torque causes intermittent signal faults.
- Never connect or disconnect transducer cables while proximitor power supply is active.
- System Total‑Length Validation
- Calculate total transducer cable length = probe integral pigtail length + extension cable(s) length.
- Confirm calculated total length matches the rated cable length of installed proximitor. Mismatch will produce incorrect scale‑factor output.
- System Commissioning Test
- Complete full transducer loop wiring, power on proximitor.
- Perform static gap calibration test with calibration fixture, verify output voltage and scale‑factor performance.
- Confirm Not‑OK fault status is cleared after correct wiring.
- Maintenance & Troubleshooting
- Inspect ClickLoc connectors for dirt, corrosion and loose connection during machinery turnaround.
- Check cable jacket for abrasion, oil erosion and mechanical damage.
- Signal drift or intermittent Not‑OK alarms may indicate defective probe or poor ClickLoc contact. Replace complete probe assembly; field repair of probe cable is not recommended.
- Special Installation Restriction
- This 330105‑02‑12‑10‑02‑00 is non‑intrinsically‑safe variant. Installation is limited to non‑hazardous safe‑area locations only. Do not apply for ATEX / IECEx classified zones.
Supplementary Remark
330105‑02‑12‑10‑02‑00 is a 3/8‑24 UNF reverse‑mount 3300‑XL 8 mm proximity probe with 12 mm unthreaded body segment, 1.0 m integral pigtail cable and ClickLoc connector. This is the standard non‑IS version without hazardous‑area certifications, intended exclusively for safe‑area reverse‑mount measurement loops. It must pair exclusively with standard 8 mm‑series proximitor and ClickLoc extension‑cable assemblies. Prior to commissioning, cross‑check part‑number configuration, reverse‑mount thread dimension, pigtail length, connector type and non‑IS property against project BOM and mechanical drawings.
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