Product Overview
The Bently Nevada 330905-00-25-10-02-05 is a precision-engineered 3300 NSv proximity probe designed for continuous vibration and position monitoring in critical rotating machinery. This industrial automation module delivers reliable performance in demanding environments, featuring an M10X1 thread, a 1.0-meter total length, and a miniature coaxial ClickLoc connector. With enhanced chemical resistance over previous 3300 RAM probes, the 330905-00-25-10-02-05 excels in process compressor applications.
This probe is mechanically and electrically interchangeable with Bently Nevada's earlier 3300 RAM series, simplifying upgrades. Its side-view characteristics outperform the 3000-series 190 probe, ensuring accurate gap measurements even at close distances. Each unit ships new and original in factory packing with a 12-month warranty.
Technical Specifications
The 330905-00-25-10-02-05 delivers a linear range of 1.5 mm (60 mils), starting at approximately 0.25 mm from the target. Its incremental scale factor (ISF) is 7.87 V/mm (200 mV/mil) with interchangeability error of +12.5%/-20%. The deviation from best fit straight line (DSL) remains less than ±0.06 mm (±2.3 mils), ensuring accurate readings.
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Probe DC Resistance: 4.2 ± 0.5 ohms (for 1.0 m probe)
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Extension Cable Capacitance: 69.9 pF/m typical
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Frequency Response: 0 to 10 kHz (+0, -3 dB) with up to 305 m field wiring
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Operating Temperature: -52°C to +177°C
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Probe Tip Material: Polyphenylene sulfide (PPS)
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Probe Case Material: AISI 304 stainless steel
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Maximum Torque: 0.56 N•m (5 in•lb)
Industry Applications
In process compressor applications, the 330905-00-25-10-02-05 provides reliable vibration monitoring even with aggressive chemicals present. Its increased chemical resistance compared to earlier models ensures long-term stability. For axial position measurements on shafts smaller than 13 mm, reducing the gap helps maintain scale factor accuracy, making this probe suitable for compact turbomachinery.
Additionally, the probe's robust construction and wide temperature range support use in gas turbines, pumps, and generators where continuous operation is critical. The high linearity and low DSL guarantee trustworthy data for predictive maintenance programs.
Installation & Setup Guidance
When installing the 330905-00-25-10-02-05, ensure the probe tip is finger tight, with maximum torque not exceeding 0.56 N•m. Recommended torque for M10X1 probe cases is 7.5 N•m (66 in•lb). Observe the minimum bend radius of 25.4 mm for the cable to avoid damage. Field wiring should use three-conductor shielded triad cable with 0.2 to 1.5 mm² cross-section; maximum length between the Proximitor Sensor and monitor is 305 meters.
For optimal performance, set the recommended gap to 1.0 mm (40 mils). Use a flat target with a recommended minimum diameter of 13 mm to maintain scale factor accuracy. Avoid excessive torque on the connector-to-connector interface; maximum rated torque is 22.6 N•m.
Maintenance & Reliability
Routine inspection of the probe cable and connector is essential. Check for signs of wear or chemical attack, especially in harsh environments. The PPS tip and stainless steel case resist corrosion, but periodic cleaning with a soft cloth is advisable. The probe is designed to seal differential pressure using a Viton O-ring; however, it is not pressure-tested before shipment. For applications requiring pressure seal verification, contact the custom design department.
Store the probe within the -52°C to +177°C range to preserve material integrity. With proper care, the 330905-00-25-10-02-05 delivers years of reliable service, reducing downtime and maintenance costs.
Compatibility & Integration
The 330905-00-25-10-02-05 is compatible with Bently Nevada 3300 XL NSv Proximitor Sensors and existing 3300 RAM systems. Its miniature coaxial ClickLoc connector ensures secure, quick installation. The probe works seamlessly with standard monitoring systems that accept eddy-current proximity probe inputs. For new integrations, verify that the monitor's frequency response matches the probe's 0-10 kHz range.
Selection Guide & Purchasing Advice
Before purchasing, confirm your required unthreaded length, overall case length, and total length. This model features 00 mm unthreaded length, 250 mm overall case length, and 1.0 meter total length. Ensure the connector type matches your extension cable. The agency approval option -05 indicates multiple approvals, suitable for international use. For bulk orders or technical support, PLC Source PRO offers genuine, factory-packed units with a 12-month warranty.