Product Overview
The Bently Nevada 330905-00-09-05-02-05 is a 3300 NSv proximity probe designed for reliable vibration and position monitoring in critical rotating machinery. This industrial automation module features an M10x1 threaded case without armor, a 0.5 meter (20 inch) total length, and a miniature coaxial ClickLoc connector with standard cable. It is mechanically and electrically compatible with the previous 3300 RAM probe, offering enhanced chemical resistance for demanding process compressor applications.
This probe delivers superior side-view characteristics compared to the 3000-series 190 probe, ensuring accurate gap measurements even at close distances. With a linear range of 1.5 mm (60 mils) and an incremental scale factor of 7.87 V/mm (200 mV/mil), the 330905-00-09-05-02-05 provides precise, repeatable data for condition monitoring systems.
Technical Specifications
Key performance parameters of the Bently Nevada 330905-00-09-05-02-05 include:
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Probe DC Resistance: 4.0 ± 0.5 ohms (0.5 m length)
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Linear Range: 1.5 mm (60 mils), from 0.25 to 1.75 mm (10 to 70 mils)
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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 Tip Material: Polyphenylene sulfide (PPS)
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Probe Case Material: AISI 304 stainless steel (SST)
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Probe Cable: 75 Ω coaxial, FEP insulated, available in lengths 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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Minimum Bend Radius: 25.4 mm (1.0 in)
Industry Applications
The 330905-00-09-05-02-05 is ideal for vibration monitoring on turbines, compressors, pumps, and electric motors. Its enhanced chemical resistance makes it particularly suitable for process compressor applications where exposure to aggressive media is common. The probe's superior side-view characteristics allow accurate gap measurements even when space is constrained.
In axial position monitoring on shafts smaller than 13 mm (0.5 in) diameter, the probe maintains reliable performance, though scale factor may vary; reducing the gap between probe and target helps limit this change. For maximum accuracy, use a flat target of at least 13 mm (0.5 in) diameter.
Installation & Setup Guidance
Proper installation is critical for optimal performance. Follow these guidelines:
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Mounting: Thread the M10x1 case into a drilled hole. Use finger-tight torque initially, then tighten to a maximum of 0.56 N•m (5 in•lb) for the probe case. For M10x1 probe cases, maximum rated torque is 22.6 N•m (200 in•lb), recommended 7.5 N•m (66 in•lb) on the first three threads.
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Gap Setting: Set the gap to 1.0 mm (40 mils) using the DC output voltage (approximately -1 to -13 Vdc over the linear range).
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Field Wiring: Use three-conductor shielded triad cable with cross-section 0.2 to 1.5 mm² (16 to 24 AWG). Maximum length between the 3300 XL NSv Proximitor Sensor and monitor is 305 meters (1,000 feet).
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Bend Radius: Do not bend the cable tighter than 25.4 mm (1.0 in) radius, with or without SST armor.
Maintenance & Reliability
The 330905-00-09-05-02-05 is built to endure harsh environments. Its PPS tip and stainless steel case resist corrosion and wear. The probe seals differential pressure with a Viton O-ring; however, probes are not pressure tested before shipment. For applications requiring pressure seal verification, contact our custom design department.
Routine inspection should include checking cable integrity, connector tightness, and target surface condition. Replace the probe if the cable shows cuts, kinks, or excessive wear. With proper care, this probe delivers long-term, dependable service, reducing downtime and maintenance costs.
Compatibility & Integration
The 330905-00-09-05-02-05 is mechanically and electrically interchangeable with Bently Nevada's earlier 3300 RAM proximity probe and extension cable. It works with 3300 XL NSv Proximitor Sensors and supports field wiring lengths up to 305 meters. The miniature coaxial ClickLoc connector ensures secure, reliable connections.
This probe integrates seamlessly into existing Bently Nevada monitoring systems, making it a straightforward upgrade or replacement for legacy 3300 series installations.
Selection Guide & Purchasing Advice
When ordering, verify the exact part number 330905-00-09-05-02-05 to ensure you receive the correct configuration: M10x1 thread, 00 mm unthreaded length, 90 mm overall case length, 0.5 m total length, miniature coaxial ClickLoc connector, standard cable, and multiple agency approvals. Confirm the total length and connector type match your application requirements.
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