Product Overview
When machine vibration monitoring systems require precise and durable sensing, the Bently Nevada 330709-000-230-90-11-00 3300 XL 11 mm Proximity Probes deliver consistent performance. This probe features a M16x1.5 thread, 0 mm unthreaded length, 230 mm overall case length, and a 9.0 meter cable with a miniature coaxial ClickLoc connector and FluidLoc cable. Designed for harsh industrial environments, this probe operates reliably across a wide temperature range from -52°C to +177°C.
Technical Specifications
The following specifications are extracted from the product datasheet for the Bently Nevada 330709-000-230-90-11-00:
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Probe Resistance: 8.5 ± 1.1 ohms (9.0 m probe length)
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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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Cable: 75 Ω triaxial, FEP insulated; available in 1, 5, or 9 meters (this unit is 9 m)
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Thread: M16x1.5
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Maximum Thread Engagement: 24 mm
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Recommended Probe Case Torque: 21.1 N·m (187 in·lb)
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Minimum Bend Radius: 25.4 mm (1.0 in)
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Temperature Range: -52°C to +177°C operating/storage
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Temperature Classification: T1 to T5 per EPL Ga/Gc and Dc schedules
For EPL Ga and Gc, the temperature classifications range from T1 (ambient -55°C to +232°C) down to T5 (-55°C to +40°C). For EPL Dc, the T280°C@Ta schedule supports up to 232°C ambient.
Application Scenarios
The Bently Nevada 330709-000-230-90-11-00 is ideal for vibration monitoring on rotating machinery such as turbines, compressors, and pumps. In a typical installation, the probe measures shaft displacement relative to the bearing housing. The 9.0 meter cable length allows flexible placement of the signal conditioning electronics. The FluidLoc cable resists moisture and chemicals, making it suitable for process industries. One common failure mode is cabling damage due to excessive bending; the minimum bend radius of 25.4 mm helps prevent this.
Installation and Setup Guidance
When installing the 330709-000-230-90-11-00, follow these guidelines:
- Use the recommended probe case torque of 21.1 N·m (187 in·lb) to avoid damaging the thread or housing.
- Ensure the connector-to-connector torque does not exceed 0.565 N·m (5 in·lb); finger tight is sufficient.
- Respect the minimum bend radius of 25.4 mm for the cable to prevent internal wire breakage.
- For best cross-talk immunity, the target flat surface should be at least 30.5 mm in diameter, and the shaft diameter at least 152 mm.
- Operate above -34°C to avoid premature pressure seal failure.
Maintenance and Reliability
Routine inspection of the Bently Nevada 330709-000-230-90-11-00 should focus on cable integrity and connector tightness. The probe case is stainless steel and resists corrosion; the PPS tip withstands chemical exposure. The temperature schedule ensures safe operation in hazardous areas (EPL Ga, Gc, Dc). To maximize service life, avoid temperatures below -34°C during operation and store within -52°C to +177°C.
Troubleshooting Common Issues
Common problems with proximity probes include false readings from cross-talk, cable damage, and thermal drift. For the Bently Nevada 330709-000-230-90-11-00, verify the probe resistance (8.5 ± 1.1 ohms) to check cable integrity. If readings are noisy, inspect the connector and cable for bends tighter than 25.4 mm. Ensure the target size meets minimum recommendations to avoid cross-talk. If temperature extremes affect performance, review the applicable temperature classification for your environment.
Selection Guide and Purchasing Advice
When selecting a replacement probe, confirm the thread size (M16x1.5), overall length (230 mm case, 9.0 m cable), and connector type (miniature coaxial ClickLoc). The Bently Nevada 330709-000-230-90-11-00 includes a connector protector and FluidLoc cable. For pricing and availability, visit ubest101 shop for genuine Bently Nevada parts.