Product Overview
The Bently Nevada 330904-00-15-50-12-05 is a 3300 NSv proximity probe designed for reliable vibration and position monitoring in critical rotating machinery. This industrial automation module features an M8X1 threaded case, a 150 mm overall case length, and a 5.0-meter (16.4 feet) total length with a miniature coaxial ClickLoc connector and FluidLoc cable. With multiple agency approvals, this probe meets stringent industry requirements.
Compared to previous 3300 RAM probes, the 330904-00-15-50-12-05 offers increased chemical resistance, making it ideal for process compressor applications. Its side-view characteristics outperform the 3000-series 190 probe when gapping at the same distance from the target.
Key Specifications
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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%
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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
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Operating Temperature: -52°C to +177°C (-62°F to +351°F)
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Probe Tip Material: Polyphenylene sulfide (PPS)
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Probe Case Material: AISI 304 stainless steel
Technical Specifications
| Parameter |
Value |
| Probe DC Resistance (RPROBE) |
5.3 ± 0.7 ohms (5.0 m length) |
| Extension Cable DC Resistance (Center Conductor) |
0.220 Ω/m (0.067 Ω/ft) |
| Extension Cable DC Resistance (Shield) |
0.066 Ω/m (0.020 Ω/ft) |
| Extension Cable Capacitance |
69.9 pF/m (21.3 pF/ft) typical |
| Field Wiring |
0.2 to 1.5 mm² (16 to 24 AWG), 3-conductor shielded triad, max 305 m (1000 ft) |
| Target Size (flat target) |
Minimum 8.9 mm (0.35 in) diameter; recommended 13 mm (0.5 in) |
| Probe Cable |
75 Ω coaxial, FEP insulated; lengths 0.5, 1, 5, or 7 m |
| Recommended Torque |
Finger tight; maximum 0.56 N•m (5 in•lb) |
| Minimum Bend Radius |
25.4 mm (1.0 in) |
| Storage Temperature |
-52°C to +177°C (-62°F to +351°F) |
| Probe Case Torque (M8X1) |
Maximum 7.3 N•m (65 in•lb), recommended 5.1 N•m (45 in•lb) |
| Thread Engagement (M8x1) |
Maximum 12 mm |
Industry Applications
The 330904-00-15-50-12-05 excels in harsh environments where chemical resistance is critical. Typical applications include:
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Process Compressors: The enhanced chemical resistance allows reliable operation in aggressive media, reducing downtime and maintenance costs.
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Turbomachinery Monitoring: Provides accurate shaft vibration and position data for predictive maintenance programs.
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Pumps and Fans: Detects early signs of bearing wear or misalignment, preventing catastrophic failures.
In each scenario, the probe's linear range and scale factor ensure precise measurements, supporting condition-based maintenance strategies that extend equipment life.
Installation & Setup Guidance
Proper installation is essential for accurate readings. Follow these guidelines:
- Ensure the target surface is clean and free of runout.
- Mount the probe with the recommended torque (finger tight, maximum 0.56 N•m) to avoid damaging the threads.
- Maintain a minimum bend radius of 25.4 mm (1.0 in) on the cable to prevent internal damage.
- Set the initial gap to 1.0 mm (40 mils) for optimal linear range performance.
- Use shielded triad cable for field wiring, keeping total length under 305 meters to preserve frequency response.
Maintenance & Reliability
Routine inspection of the probe and cable is recommended to ensure long-term reliability. Check for:
- Physical damage to the probe tip or cable insulation.
- Loose connections at the ClickLoc connector.
- Accumulation of contaminants on the probe tip that could affect measurements.
With proper care, the 330904-00-15-50-12-05 delivers consistent performance, reducing unplanned outages and lowering total cost of ownership.
Compatibility & Integration
This probe is mechanically and electrically interchangeable with Bently Nevada's previous 3300 RAM proximity probe and extension cable, simplifying upgrades in existing systems. It works with 3300 XL NSv Proximitor Sensors and compatible monitors, providing seamless integration into your current monitoring architecture.
Selection Guide & Purchasing Advice
Before purchasing, verify that the probe length, thread type (M8X1), and connector style match your application requirements. The 330904-00-15-50-12-05 includes a 5.0-meter FluidLoc cable with a miniature coaxial ClickLoc connector, suitable for most installations. For custom pressure testing or special requirements, contact the manufacturer.
PLC Source PRO offers this genuine Bently Nevada 330904-00-15-50-12-05 in new, factory-sealed condition with a 12-month warranty. Ensure you order the correct part number to avoid compatibility issues.