Product Overview
When unexpected machine vibration threatens production uptime, the Bently Nevada 330709-000-070-50-01-05 3300 XL 11 mm Proximity Probes provides the precise measurement you need. This probe is part of the trusted 3300 XL series, designed for continuous monitoring of shaft vibration and position in rotating machinery such as turbines, compressors, and pumps. The model includes a 5.0 meter cable with miniature coaxial ClickLoc connector and connector protector, ensuring secure signal transmission in harsh industrial environments. With its robust construction and wide temperature range, this probe delivers long-term value by reducing unplanned downtime and extending equipment life.
Technical Specifications
- Model: Bently Nevada 330709-000-070-50-01-05
- Probe Length: 5.0 meters (16.4 feet)
- Probe DC Resistance (RPROBE): 7.2 ± 0.8 ohms
- Probe Tip Material: Polyphenylene sulfide (PPS)
- Probe Case Material: AISI 304 stainless steel (SST)
- Probe Cable: 75 Ω triaxial, FEP insulated
- Probe Case Thread: M16 x 1.5
- Maximum Length of Thread Engagement: 24 mm
- Operating and Storage Temperature: -52°C to +177°C (-62°F to +351°F)
- Recommended Probe Case Torque: 21.1 N·m (187 in·lb)
- Maximum Probe Case Torque: 63.3 N·m (560 in·lb)
- Minimum Bend Radius: 25.4 mm (1.0 in)
- Connector Type: Miniature coaxial ClickLoc with connector protector
- Agency Approval: Multiple Approvals (option 05)
These specifications are critical for accurate and reliable proximity measurement. The 5-meter length ensures compatibility with the five-meter Proximitor sensor. The low resistance tolerance (7.2 ± 0.8 ohms) guarantees consistent signal output.
Installation and Setup
Proper installation of the Bently Nevada 330709-000-070-50-01-05 is essential for optimal performance. Follow these guidelines:
- Torque the probe case to the recommended 21.1 N·m (187 in·lb). Do not exceed 63.3 N·m (560 in·lb).
- Maintain a minimum bend radius of 25.4 mm (1.0 in) on the cable to prevent damage.
- Engage the M16 x 1.5 thread for a maximum of 24 mm. Avoid over-tightening.
- When mounting, ensure the target surface is flat and at least 30.5 mm (1.2 in) in diameter for a shaft diameter of at least 152 mm (6.0 in) to minimize cross-talk.
- Use finger-tight torque for connector-to-connector connections; maximum 0.565 N·m (5 in·lb).
Reliability and Maintenance
The 330709-000-070-50-01-05 is built for long service life in demanding conditions. The PPS tip resists chemical attack and wear, while the 304 SST case withstands corrosion. However, note that exposure below -34°C (-30°F) may cause premature failure of the pressure seal. For temperature classifications, refer to the ambient temperature schedules: for EPL Ga and Gc up to T1 (+232°C) and for EPL Dc up to T280°C. Regularly inspect the cable for cuts or kinks and verify the connector is secure. A proactive maintenance approach extends the probe’s life and prevents unexpected failures, reinforcing the cost-benefit of this investment.
Selection Guide
When purchasing the Bently Nevada 330709-000-070-50-01-05, verify that your system uses a five-meter Proximitor sensor, as this probe is designed specifically for that length. Also confirm the thread size (M16 x 1.5) and environmental temperature range. For reliable supply and technical support, choose UBEST Automation (ubest101.myshopify.com). We stock genuine Bently Nevada parts and can assist with compatibility questions. This probe is an ideal replacement for older 3300 series probes, offering improved durability and measurement accuracy.