Product Overview
The Bently Nevada 330905-00-03-10-01-CN is a precision 3300 NSv proximity probe designed for reliable vibration and position monitoring in critical rotating machinery. This industrial automation module delivers accurate, real-time data to help prevent unplanned downtime and extend equipment life. With a 1.0 meter (39 inch) total length and a miniature coaxial ClickLoc connector, this probe integrates seamlessly into existing monitoring systems.
Engineered for harsh environments, the 330905-00-03-10-01-CN features a polyphenylene sulfide (PPS) probe tip and an AISI 304 stainless steel case, offering superior chemical resistance compared to earlier models. It is mechanically and electrically interchangeable with previous 3300 RAM probes, making upgrades straightforward.
Technical Specifications
Key parameters for the Bently Nevada 330905-00-03-10-01-CN include:
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Linear Range: 1.5 mm (60 mils), from 0.25 to 1.75 mm (10 to 70 mils) approximately -1 to -13 Vdc.
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Recommended Gap Setting: 1.0 mm (40 mils)
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Incremental Scale Factor (ISF): 7.87 V/mm (200 mV/mil) ±12.5%/-20% including interchangeability error.
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Deviation from Best Fit Straight Line (DSL): Less than ±0.06 mm (±2.3 mils)
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Frequency Response: 0 to 10 kHz: +0, -3 dB typical with up to 305 meters (1000 feet) of field wiring.
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Probe DC Resistance: 4.2 ± 0.5 ohms (for 1.0 m probe)
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Extension Cable DC Resistance: Center conductor 0.220 Ω/m, shield 0.066 Ω/m
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Extension Cable Capacitance: 69.9 pF/m typical
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Operating Temperature: -52°C to +177°C (-62°F to +351°F)
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Storage Temperature: -52°C to +177°C (-62°F to +351°F)
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Probe Case Material: AISI 304 stainless steel
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Probe Tip Material: Polyphenylene sulfide (PPS)
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Recommended Torque: Finger tight; maximum 0.56 N•m (5 in•lb)
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Minimum Bend Radius: 25.4 mm (1.0 in)
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Thread: M10x1, maximum engagement 15 mm
Key Features and Benefits
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High Accuracy: ISF of 7.87 V/mm ensures precise measurement over the full linear range.
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Robust Construction: Stainless steel case and PPS tip withstand demanding process environments.
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Chemical Resistance: Improved over 3300 RAM probes, ideal for process compressor applications.
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Interchangeability: Directly replaces older 3300 RAM probes without system modifications.
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Long Cable Runs: Supports up to 305 meters of field wiring with minimal signal degradation.
Industry Applications
The 330905-00-03-10-01-CN is widely used in process compressors, turbomachinery, and rotating equipment for shaft vibration and axial position monitoring. Its enhanced chemical resistance makes it especially suitable for applications involving aggressive media. For example, in a natural gas compressor, the probe reliably tracks shaft displacement even when exposed to process gases, enabling early detection of mechanical issues.
In petrochemical plants, this probe helps maintain machine health by providing continuous data to condition monitoring systems, reducing the risk of catastrophic failures. The side-view characteristics outperform older 3000-series probes, allowing more accurate gap settings.
Installation & Setup Guidance
Proper installation is essential for optimal performance. Follow these guidelines:
- Mount the probe with the recommended torque—finger tight, up to a maximum of 0.56 N•m (5 in•lb). Over-tightening can damage threads.
- Ensure the target surface is clean and flat. For shafts smaller than 13 mm (0.5 in) diameter, expect scale factor changes; adjust gap accordingly.
- Use the specified field wiring: three-conductor shielded triad cable, 0.2 to 1.5 mm² (16 to 24 AWG). Maximum length 305 meters (1000 feet).
- Maintain a minimum bend radius of 25.4 mm (1.0 in) for the probe cable to prevent damage.
- Verify the gap setting using the recommended 1.0 mm (40 mils) as a starting point.
Maintenance & Reliability
Regular inspection of the probe and cable is recommended to ensure long-term reliability. Check for physical damage, cable wear, and connector integrity. The probe's stainless steel case and PPS tip offer excellent resistance to corrosion and chemicals, reducing maintenance frequency. In environments with high vibration, periodic re-torquing of the mounting may be necessary. The 12-month factory warranty provides additional peace of mind.
Selection Guide & Purchasing Advice
When ordering a replacement, verify the exact model number 330905-00-03-10-01-CN to ensure compatibility with your system. This probe includes a 1.0 meter cable and a miniature coaxial ClickLoc connector with connector protector. If your application requires a different cable length or connector type, consult the full 3300 NSv series options. For reliable sourcing, consider PLC Source PRO, a trusted supplier of industrial automation parts.
Before purchasing, confirm the thread type (M10x1) and overall case length (30 mm) match your installation requirements. The probe is supplied new and in original factory packing, with a 12-month warranty.