Product Overview
When process compressor reliability is non-negotiable, the Bently Nevada 330907-05-30-10-12-00 delivers precise vibration monitoring in harsh chemical environments. This 3300 NSv Reverse Mount Probe is engineered for side-view proximity sensing, offering superior chemical resistance compared to the 3300 RAM probe. Its reverse mount design allows installation from the back of the machine case, simplifying routing and reducing clearance issues.
Manufactured in the U.S.A., the 330907-05-30-10-12-00 features M10X1 threads, a 1.0 meter (39 inch) total length, and a miniature coaxial ClickLoc connector with FluidLoc cable. All components use gold-plated brass ClickLoc connectors that lock securely, preventing loosening from vibration. The patented TipLoc molding method ensures a robust bond between the probe tip and body, enhancing durability in demanding service.
Key Technical Specifications
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Probe DC Resistance: 4.2 ± 0.5 ohms (from center conductor to outer conductor at 1.0 m length)
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Linear Range: 1.5 mm (60 mils), from approximately 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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Probe Tip Material: Polyphenylene sulfide (PPS)
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Probe Case Material: AISI 304 stainless steel
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Operating/Storage Temperature: -52°C to +177°C (-62°F to +351°F)
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Maximum Thread Engagement: 15 mm (for M10x1)
Industry Applications
The 330907-05-30-10-12-00 is ideally suited for process compressor applications where chemical resistance is critical. Its side-view characteristics outperform the 3000-series 190 probe when gapping at the same distance, making it a preferred choice for turbomachinery health monitoring. Typical installations include:
- Centrifugal and reciprocating compressors in oil & gas facilities
- Turboexpanders and pumps in chemical processing plants
- Generators and large rotating machinery in power generation
By using this reverse mount probe, maintenance teams can reliably track shaft vibration and position, enabling predictive maintenance and reducing unplanned downtime—a direct contributor to lower operating costs.
Installation & Setup Guidance
Proper installation is critical for accurate readings. Follow these guidelines:
- Set the probe gap to the recommended 1.0 mm (40 mils) using a suitable shim or gap tool.
- Apply the recommended mounting torque of 7.5 N•m (66 in•lb) for reverse mount probes; maximum rated torque is 22.6 N•m (200 in•lb).
- Ensure the probe tip is clean and free of debris before installation.
- Use the ClickLoc connector to secure the cable; verify it locks into place.
- For field wiring, use a three-conductor shielded triad cable with conductors from 0.2 to 1.5 mm² (16 to 24 AWG). If using ferrules, use 0.25 to 0.75 mm² (18 to 23 AWG). Maximum cable length between the Proximitor Sensor and monitor is 305 meters (1,000 feet).
Maintenance & Reliability
The 330907-05-30-10-12-00 is designed for long service life, but routine inspection enhances reliability. Check the probe tip for wear or contamination and inspect the cable for chafing or chemical damage. The Viton O-ring seal provides pressure integrity, but avoid sustained exposure to temperatures below -34°C (-30°F) to prevent premature seal failure. With proper care, this probe minimizes lifecycle costs by reducing false alarms and unscheduled maintenance.
Selection Guide & Purchasing Advice
Before ordering, verify your system's thread type and length requirements. This model uses M10X1 threads and a 1.0 meter (39 inch) cable. Confirm compatibility with your existing Proximitor sensor and monitor. For expert assistance and genuine Bently Nevada parts, trust PLC Source PRO to supply the right component for your rotating machinery protection needs.