Product Core Brief
- Model: 330903-00-05-50-02-05
- Brand: BENTLY NEVADA
- Series: 3300 XL NSv
- Core Function: Measures dynamic shaft vibration and static position for rotating machinery.
- Product Type: Eddy Current Proximity Probe
- Key Specs: 8mm Tip Diameter | 5.0m System Length | 7.87 V/mm Sensitivity
- Condition: New Original / New Surplus
Product Introduction
BENTLY 330903-00-05-50-02-05 is an 8mm eddy current proximity probe for shaft monitoring. It converts tip-to-target clearance into a linear voltage output for your condition monitoring system.
This industrial automation unit features a 5.0m total system length with 7.87 V/mm sensitivity. It operates reliably from -51°C to +177°C in demanding environments.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Probe Tip Diameter | 8mm (0.315 in) |
| System Electrical Length | 5.0 Meters |
| Sensitivity | 7.87 V/mm (200 mV/mil) |
| Linear Range | 2.0mm (80 mils) |
| Recommended Gap | 1.27mm (50 mils) |
| Operating Temperature | -51°C to +177°C |
| Thread Specification | M8 x 1 Metric |
| Cable Type | Standard Non-Armored |
| Connector Type | Micro-Coaxial |
| Frequency Response | 0–10 kHz |
BENTLY 330903-00-09-10-02-05
Quality Control Process
We validate every BENTLY 330903-00-05-50-02-05 before shipment. First, we measure DC coil resistance with a precision LCR meter. Out-of-spec coils get rejected immediately.
Next, we run a gap-voltage linearity test against a certified steel target. Output must stay within 1% across the full 2mm range. We also inspect micro-coax connectors under magnification for pin damage.
Finally, each replacement module ships in anti-static shielding with desiccant packs. This prevents moisture ingress during transit.
Replacement Pitfall Guide
❗ System Length Mismatch: The “50” in your part number means 5.0m total electrical length. Probe cable plus extension cable MUST equal this exactly. Even 10cm of error ruins calibration.
❗ Ground Loop Noise: Never ground the probe shield at both ends. This creates a ground loop that mimics vibration signals. Ground only at the proximitors side.
❗ Thread Engagement: The M8 x 1 metric thread is fine-pitch. Cross-threading destroys the housing seal. Hand-start only, then torque to spec.
❗ Cable Routing: Keep probe cables away from VFD output lines. High-frequency switching noise will corrupt your displacement signal.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| 330903-00-05-50-02-05 | 330903-00-05-50-02-00 | Direct | Verify agency approval code |
| 330903-00-05-50-02-05 | 330903-00-05-70-02-05 | Needs Adaptation | 7.0m length; recalibrate system |
| 330903-00-05-50-02-05 | 330903-00-05-50-01-05 | Needs Adaptation | Different connector type |
- Sensitivity: 7.87 V/mm (200 mV/mil) nominal
- Frequency Response: 0–10 kHz (-3dB)
