Description
Product Core Brief
- Model: 33010502-12-10-02-05
- Brand: Bently Nevada
- Series: 3300 XL 8 mm
- Core Function: Measures shaft vibration and position in restricted spaces.
- Product Type: Reverse Mount Proximity Probe
- Key Specs: 8 mm Tip | 1.0 m Cable | Reverse Install
- Condition: New Original (New Surplus)

Bently Nevada 33010502-12-10-02-05
Product Introduction
BENTLY 33010502-12-10-02-05 is an 8 mm reverse mount proximity probe. It connects to standard 3300 XL Proximitor systems for vibration monitoring.
Unlike standard probes, this unit mounts back-to-back against the bracket. The BENTLY 33010502-12-10-02-05 features a 1.0 meter cable and 2 mm linear range. Verify bracket clearance before installation.
Key Technical Specifications
- Probe Tip Diameter: 8 mm (0.315 in)
- Cable Length: 1.0 meters
- Mounting Style: Reverse Mount
- 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
- Coil Resistance: 9.5 Ω ±1 Ω at 25 °C
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
❗ Mounting Orientation: The BENTLY 33010502-12-10-02-05 is reverse mount. Standard probes will not fit this bracket geometry.
❗ Cable Length: This unit has a fixed 1.0 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.
❗ ESD & Handling: Never touch the probe tip with bare fingers. Skin oils attract debris and alter gap readings.
Keep these in mind and you’ll cut 90% of rework time.

Bently Nevada 33010502-12-10-02-05
Compatibility Matrix & Benchmarks
- 33010502-12-10-02-05 → 330105-02-12-10-02-05 : Direct — equivalent part number
- 33010502-12-10-02-05 → 330105-02-12-05-02-05 : Needs Adaptation — 0.5m cable requires recalibration
- 33010502-12-10-02-05 → 330100-00-10-10-02-00 : Incompatible — Standard mount style
