Description
Product Core Brief
- Model: 330906-02-12-05-02-CN
- Brand: Bently Nevada
- Series: 3300 XL NSv
- Core Function: Measures shaft radial vibration and axial position in restricted spaces.
- Product Type: NSv Reverse Mount Proximity Probe
- Key Specs: 8 mm Tip | 1.2 m Cable | Reverse Install | CN Approved
- Condition: New Original (New Surplus)
BENTLY 330906-02-12-05-02-CN
Product Introduction
BENTLY 330906-02-12-05-02-CN is an 8 mm reverse mount proximity probe from the 3300 XL NSv series. It is specifically engineered for centrifugal air compressors, refrigeration compressors, and process gas compressors where standard 5 mm or 8 mm sensors cannot fit.
This unit features a 1.2-meter cable and holds China (CN) certification. The BENTLY 330906-02-12-05-02-CN is ideal for small target applications (e.g., shafts < 51 mm) and fluid-film bearing machines. It is designed to directly replace older 3300 RAM and 3000/7000 series 190 sensor systems.
Key Technical Specifications
- Probe Tip Diameter: 8 mm (0.315 in)
- Cable Length: 1.2 meters (code -12)
- Mounting Style: Reverse Mount (NSv)
- Sensitivity: 7.87 mV/µm (200 mV/mil)
- Linear Range: 2 mm (80 mils)
- Frequency Response: 0 to 10 kHz
- Operating Temp: -51 °C to +177 °C
- Certification: CN (China Approval)
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: Trace source via serial number. Inspect probe tip for scratches or pitting.
- Live Functional Test: Connect to TK-3E calibrator. Verify linearity across full 2 mm gap.
- Electrical Parameter Test: Measure coil resistance and insulation (500 V Megger, >10 MΩ).
- Cable Integrity Test: Check continuity and shield grounding at connector.
- Final QC & Packaging: Seal in anti-static bag. Apply QC Passed label with date.
BENTLY 330906-02-12-05-02-CN
Replacement Pitfall Guide
❗ System Upgrade Rules: If upgrading from a 3300 RAM system, you can reuse existing extension cables. If upgrading from 3000/7000 series, the entire system (probe, extension cable, and Proximitor) must be replaced.
❗ Mounting Orientation: The BENTLY 330906-02-12-05-02-CN is reverse mount. Standard probes will not fit this bracket geometry.
❗ Cable Length: This unit has a fixed 1.2 m cable. Adding extensions changes system calibration and may violate API 670 limits.
❗ Target Material: Eddy current response varies with conductivity. Verify target material matches original OEM spec. Aluminum and steel behave differently.
❗ Gap Voltage: Set initial gap to -9 Vdc to -10 Vdc for steel targets. Well, technically you can use other points, but -9.5 Vdc is the industry standard center point.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
- 330906-02-12-05-02-CN → 330906-02-12-05-02-00 : Direct — identical sensor, non-CN certified
- 330906-02-12-05-02-CN → 330906-02-12-10-02-00 : Needs Adaptation — 1.0m cable requires recalibration
- 330906-02-12-05-02-CN → 330105-02-12-05-02-CN : Incompatible — Standard 3300 XL vs NSv system
Benchmarks:
- Signal-to-noise ratio: >60 dB (calibrated gap, steel target)
- Temperature drift: <0.5 mV/°C (compensated system)
