Description
Bently Nevada 330103-00-12-10-02-CN Proximity Probe for 3300 XL Systems – Reliable Shaft Vibration and Position Measurement
The Bently Nevada 330103-00-12-10-02-CN is part of the 3300 XL 8 mm proximity transducer system that maintenance teams use every day to measure shaft vibration, radial position, and axial (thrust) movement on critical rotating machinery. From my experience, this model is a practical drop-in when you need a robust probe that stays stable through heat, oil, and tight mounting spaces. It’s a solid choice for pairing with a 3300 XL Proximitor Sensor and the standard extension cable to complete a full transducer loop.
Company’s Order Placement Process and Guarantees
- Warranty: 365 days
- Lead time: typically 1 week if in stock; no more than one month at the latest
- Payment: 50% advance payment, full payment prior to delivery
- Express delivery: FedEx, UPS, DHL
Key Features
- 3300 XL 8 mm eddy-current technology – Stable, industry-proven measurement for vibration and gap on rotating shafts.
- Designed as part of a complete transducer system – Works with a 3300 XL extension cable and 3300 XL Proximitor Sensor to deliver a calibrated output to your monitor.
- Standard system sensitivity – Typically –200 mV/mil (–7.87 mV/µm) with up to 2.0 mm (80 mil) linear range when used with the matching Proximitor.
- Rugged probe construction – Stainless-steel body and durable cable help resist oil, vibration, and thermal cycling.
- Consistent performance – You might notice that the gap and phase readings remain stable even during long runs and temperature swings.
- Compatibility – Integrates smoothly with Bently Nevada monitoring systems (such as 3500 series) in most cases.
- CN variant – The “CN” suffix typically indicates a regional compliance/marking option for the China market; functionality remains equivalent.
Technical Specifications
| Brand / Model | Bently Nevada 330103-00-12-10-02-CN (8 mm proximity probe) |
| HS Code | 903180 (Measuring/Checking Instruments, Other) |
| Power Requirements | Probe is passive; powered via 3300 XL Proximitor Sensor (–24 Vdc nominal supply from monitor) |
| Dimensions & Weight | 8 mm tip diameter; cable length per ordering code; weight varies by length (typically < 0.2 kg for common builds) |
| Operating Temperature | Probe typically –51 to +177 °C; extension cable often –51 to +121 °C; Proximitor typically –35 to +65 °C (system dependent) |
| Signal Input/Output | Eddy-current probe input; analog output from Proximitor typically –200 mV/mil (–7.87 mV/µm), linear range up to ~2.0 mm (80 mil) |
| Communication Interfaces | None (analog voltage to monitoring system) |
| Installation Method | Threaded probe mounting with locknuts; routed to 3300 XL extension cable and Proximitor; observe shielding and grounding best practices |
Application Fields
Typically used on:
- Steam and gas turbines (radial vibration, thrust position)
- Centrifugal and axial compressors
- Large pumps, fans, and blowers
- Gearboxes and test stands
- Generators and motors in continuous process industries
One thing I appreciate is how predictable the gap voltage looks during startups; it makes diagnosing misalignment or rubs much faster on machines that don’t give you much time to react.
Advantages & Value
- Reliability – 3300 XL probes are known for long service life under heat and oil splash, reducing unexpected stops.
- Compatibility – Calibrated to standard Bently Nevada monitors (e.g., 3500 series), which streamlines spares and commissioning.
- Lower lifecycle cost – Stable calibration means fewer rework hours and less frequent probe replacement.
- Technical support – Documentation and field know‑how are widely available, which in many cases speeds up troubleshooting.
Installation & Maintenance
- Mounting – Install the probe with the proper thread engagement and locknuts; set the cold gap per your monitor’s recommended DC bias voltage.
- Routing – Keep sensor cables away from high-voltage lines and VFDs; maintain shielding continuity from probe to Proximitor.
- Cabinet standards – House Proximitor sensors in a ventilated cabinet; typical practice is DIN-rail or panel mounting with good grounding.
- Safety – De-energize the monitor channel before service; confirm hazardous area approvals for your site if applicable.
- Routine checks – Verify gap voltage and runout during shutdowns; clean probe tips if fouling occurs; review monitor firmware and calibration annually.
Quality & Certifications
- Manufactured under ISO 9001 quality systems (manufacturer-level)
- CE and RoHS conformity commonly available for the series
- Meets API 670 practices in most cases when used with matching Proximitor and monitors
- Supplier warranty: 365 days
Related/Supporting Components
To complete the transducer system, pair the 330103 probe with:
- Bently Nevada 3300 XL extension cable (8 mm series)
- Bently Nevada 3300 XL Proximitor Sensor (8 mm calibration)
A maintenance manager told us they swapped in a 330103 on a hot gas compressor and “didn’t have to touch the gap again for a full run,” which seems to be the common feedback when installation practices are followed.
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