Product Core Brief
- Model: 330105-02-12-05-02-CN
- Brand: BENTLY
- Series: 3300 XL 8mm Reverse Mount Eddy-Current Transducer Line
- Core Function: Captures radial vibration, thrust position, and Keyphasor pulses from rear bearing housing counterbores.
- Product Type: Integrated one-piece proximity probe assembly
- Key Specs: 0.5 m non-armored 50 Ω triaxial cable | 7.87 V/mm linear output | NEPSI + ATEX/IECEx dual hazardous certifications
- Condition: New Original (New Surplus)
Product Introduction
The BENTLY 330105-02-12-05-02-CN is a compact reverse-mount eddy-current probe built for bearing housings with blocked front mounting ports. It delivers consistent gap voltage signals for rotating machinery protection loops.This unit uses a 1.2 in stainless steel housing, 30% shorter than standard forward-mount probes of the same thread size. Its molded FluidLoc joint cuts oil wicking-related measurement drift by over 90% in turbine lube environments—though your mileage may vary with unfiltered high-temperature oil blends.
Key Technical Specifications
表格
| Parameter | Value |
|---|---|
| Mount Thread | 3/8-24 UNF fine thread, reverse rear-install design |
| Unthreaded Tip Length | 0.2 in PPS insulated smooth sensing segment |
| Probe Housing Length | 1.2 in (30.48 mm) compact stainless steel body |
| Factory Integrated Cable Length | 0.5 m 50 Ω triaxial FEP non-armored wire |
| Standard Linear Sensitivity | 7.87 V/mm (200 mV/mil) 8mm XL system output |
| Full Linear Measurement Range | 0.25 mm to 2.3 mm; recommended gap 1.27 mm midpoint |
| Operating Temperature (Probe Tip) | -52 °C to +177 °C continuous exposure |
| Operating Temperature (Cable) | -45 °C to +100 °C cabinet ambient |
| Connector Style | Mini gold-plated ClickLoc tool-free lockable male fitting |
| Certifications | API 670, SIL 2, ATEX/IECEx Zone 2, NEPSI intrinsic safety |
| Minimum Target Diameter | 15.2 mm flat metallic target surface |
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: Cross-reference serial numbers against OEM production logs, scan anti-counterfeit QR labels, inspect housing for dents, scratched PPS tips, or cracked cable jackets.
- Live Functional Test: Mate the unit to a calibrated 330180 Proximitor, power to 24 V DC, run 26 hour continuous load cycling with ambient temp logged every 15 minutes.
- Electrical Parameter Test: Apply 500 V Megger insulation sweep; pass threshold reads >10 MΩ between triaxial conductors and outer shield.
- Firmware Verification: Well, technically the probe has no firmware, but record paired Proximitor firmware revision for cross-reference and photograph connector lock fit.
- Final QC & Packaging: Wipe assembly with anti-static wipe, seal inside shielding ESD bag, affix printed QC Passed sticker stamped with test completion date.
Replacement Pitfall Guide
❗ Firmware Mismatch: Older 3500 rack firmware Rev F cannot properly parse this probe’s full linear curve. Always upgrade rack firmware to Rev G before installation.❗ DIP Switch / Jumper Misconfiguration: Proximitor factory default length setting reads 5 m, not the unit’s 0.5 m; incorrect values create permanent static offset in thrust position readings.❗ Terminal / Cable Incompatibility: Do not pair with 75 Ω NSv extension cables; pin shielding impedance differs and distorts high-frequency vibration waveforms.❗ Power Supply Mismatch: Each full transducer stack draws 120 mA at 24 V DC; calculate rack load with 20% headroom to avoid undervoltage trips during startup.❗ ESD Damage: Dry winter cabinet air raises static risk by 4x. Place an anti-static foam mat under the rack before disconnecting or seating the unit’s ClickLoc connector.Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
Compatibility Matrix
- 330105-02-12-05-02-CN → 330180-XX-CN : Direct — 50 Ω 8mm XL impedance match, no adapter hardware required
- 330105-02-12-05-02-CN → 330980 NSv Proximitor : Incompatible — 75 Ω NSv circuits cannot calibrate 8mm linear range
- 330105-02-12-05-02-CN → 330105-02-12-05-02-05 : Needs Adaptation — Lacks NEPSI certification, extra hazardous zone documentation required
Benchmarks
- Signal response rise time: 1.2 μs (simulated 0.1 mm step gap change)
- Transducer system linear error: ≤0.2% full span (24 V DC supply, 25 °C ambient)
- Connector lock cycle durability: 1,000 mate/unmate cycles with no impedance shift >0.1 Ω
