Description
Product Core Brief
- Model: 330907-A05-B30C05-D02-ECN
- Brand: Bently Nevada
- Series: 3300 NSv
- Core Function: Measures shaft vibration and position in restricted spaces.
- Product Type: NSv Reverse Mount Proximity Probe
- Key Specs: 0.5 m Cable | ClickLoc Connector | CN Approved
- Condition: New Original (New Surplus)
BENTLY 330907-A05-B30C05-D02-ECN
Product Introduction
BENTLY 330907- is a reverse mount proximity probe from the 3300 NSv series, manufactured in the USA. It is specifically engineered for centrifugal air compressors, refrigeration compressors, and process gas compressors where standard sensors cannot fit.
This unit features a compact 0.5-meter cable and a standard ClickLoc micro-coaxial connector. The BENTLY 330907- is ideal for small target applications and fluid-film bearing machines, and it holds specific China (CN) certification.
Key Technical Specifications
- Probe Tip Diameter: 8 mm (0.315 in)
- Cable Length: 0.5 meters (20 inches)
- Connector Type: Micro-coaxial ClickLoc (Standard Cable)
- Mounting Style: Reverse Mount (NSv)
- Sensitivity: 7.87 mV/µm (200 mV/mil)
- Linear Range: 2 mm (80 mils)
- 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.
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 330907- is reverse mount. Standard probes will not fit this bracket geometry.
❗ Cable Length: This unit has a fixed 0.5 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
- 330907- → 330907-05-30-05-02-CN : Direct — equivalent part number
- 330907- → 330906-02-12-05-02-CN : Needs Adaptation — 1.2m cable requires recalibration
- 330907- → 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)
