Product Introduction
The Bently Nevada 330903-02-16-05-02-00 is a precision 3300 NSv proximity probe designed for reliable vibration and position monitoring in critical rotating machinery. This industrial automation module is engineered with an M8x1 thread, without armor, and a 20 mm unthreaded length, making it suitable for a wide range of mounting configurations. With a total length of 0.5 meters (20 inches) and a miniature coaxial ClickLoc connector, this probe integrates seamlessly into existing monitoring systems.
Part of the proven 3300 series, the 330903-02-16-05-02-00 offers enhanced chemical resistance compared to the earlier 3300 RAM probe, enabling its use in demanding process compressor applications. Its superior side-view characteristics ensure accurate gap measurements even when mounted at a distance from the target.
Technical Specifications
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Probe dc Resistance: 4.0 ± 0.5 ohms (for 0.5 m probe length, measured from center conductor to outer conductor)
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Linear Range: 1.5 mm (60 mils), from 0.25 mm to 1.75 mm (10 to 70 mils) from target
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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) with +12.5%/-20% 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 of field wiring
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Target Size (flat target): Minimum 8.9 mm diameter; recommended minimum 13 mm diameter
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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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Probe Cable: 75 Ω coaxial, FEP insulated, available in 0.5, 1, 5, or 7 meters
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Operating/Storage Temperature: -52°C to +177°C (-62°F to +351°F)
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Maximum Torque: 0.56 N•m (5 in•lb)
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Minimum Bend Radius: 25.4 mm (1.0 in)
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Connector-to-Connector Torque (M8x1): Maximum 7.3 N•m, recommended 5.1 N•m
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Maximum Thread Engagement: 12 mm for M8x1
Industry Applications
The 330903-02-16-05-02-00 is ideal for vibration and axial position monitoring on compressors, turbines, pumps, and other rotating equipment. Its enhanced chemical resistance makes it particularly well-suited for process compressor applications where exposure to aggressive media is a concern. The probe's linear range and scale factor ensure accurate measurements in tight clearances, supporting predictive maintenance strategies that reduce unplanned downtime.
For example, in a hydrocarbon processing plant, the 330903-02-16-05-02-00 can be installed to monitor shaft vibration on a centrifugal compressor. Its robust construction and reliable performance help operators detect early signs of bearing wear or misalignment, allowing maintenance to be scheduled before a catastrophic failure occurs.
Installation & Setup Guidance
When installing the 330903-02-16-05-02-00, ensure the probe tip is positioned according to the recommended gap setting of 1.0 mm (40 mils) from the target surface. Use the finger-tight torque for initial positioning, then apply a maximum torque of 0.56 N•m (5 in•lb) to secure the probe. For M8x1 threaded cases, the recommended connector-to-connector torque is 5.1 N•m (45 in•lb), with a maximum of 7.3 N•m (65 in•lb).
Field wiring should use a three-conductor shielded triad cable with conductor sizes of 0.2 to 1.5 mm² (16 to 24 AWG). The maximum length between the Proximitor Sensor and the monitor is 305 meters (1,000 feet). Always verify that the probe cable is not bent beyond the minimum bend radius of 25.4 mm (1.0 in) to avoid damage.
Maintenance & Reliability
Routine inspection of the probe and cable is recommended to ensure reliable operation. Check for any signs of physical damage, especially at the connector and cable entry points. Keep the probe tip clean and free of debris that could affect measurement accuracy. The probe's stainless steel case and PPS tip provide excellent resistance to corrosion and chemical attack, extending service life in harsh environments.
Because the probe is not pressure tested prior to shipment, if your application requires a pressure seal test, contact the custom design department before installation. Regular calibration checks against a known target can help maintain measurement accuracy over time.
Compatibility & Integration
The 330903-02-16-05-02-00 is mechanically and electrically compatible with Bently Nevada's previous 3300 RAM proximity probe and extension cable systems, allowing for straightforward upgrades. It works with 3300 XL NSv Proximitor Sensors and is designed to integrate with Bently Nevada monitoring systems. The miniature coaxial ClickLoc connector ensures a secure and reliable connection.
Selection Guide & Purchasing Advice
Before purchasing the 330903-02-16-05-02-00, verify the required unthreaded length, overall case length, total length, and connector type for your specific application. Ensure that the probe's linear range and scale factor meet your measurement needs. PLC Source PRO offers this industrial automation module as new and original in factory packing, backed by a 12-month factory warranty. For detailed specifications or assistance with your selection, rely on PLC Source PRO's expertise in industrial automation parts.