Product Overview
- Brand: Bently Nevada
- Model: 330708-00-20-50-02-05
- Series: 3300 XL 11 mm Proximity Probes
- Product Type: Eddy current proximity transducer system component
- Manufacturing Origin: Made in U.S.A
- Primary Function: Measures static and dynamic vibration and displacement in industrial machinery
- Core Design: Non-contact measurement technology ensures high reliability and long operating life
- Shipping Speed: Dispatched within 12 to 48 hours
- Shipping Carriers: FedEx, UPS, DHL
- Warranty Terms: 12 months standard warranty
Configuration Breakdown
- Base Model and Tip Size: 330708
- 3300 XL 11 mm Probe
- 5/8-18 UNF thread structure
- Design excludes armor protection
- Unthreaded Length Option: 00
- 0 inches of unthreaded body
- Overall Case Length Option: 20
- 2.0 inches total case length
- Total Length Option: 50
- 5.0 meters or 16.4 feet total system length
- Optimized exclusively for five-meter Proximitor Sensors
- Connector and Cable-Type Option: 02
- Miniature coaxial ClickLoc connector
- Standard high-frequency cable design
- Agency Approval Option: 05
- Multiple global hazardous area approvals
Technical Data
- Brand: Bently Nevada
- Model: 330708-00-20-50-02-05
- Probe Tip Material: Polyphenylene sulfide, known as PPS
- Probe Case Material: AISI 304 stainless steel, known as SST
- Probe Cable Specification: 75 ohm triaxial cable insulated with fluoroethylene propylene, known as FEP
- Probe dc Resistance: 7.2 plus or minus 0.8 ohms from center conductor to outer conductor
- Probe Case Thread: 5/8-18 UNF standard thread
- Maximum Thread Engagement: 0.938 inches
- Maximum Case Torque: 45.2 Newton meters or 400 inch pounds
- Recommended Case Torque: 15.2 Newton meters or 133 inch pounds
- Connector Torque: Finger tight recommended, maximum 0.565 Newton meters or 5 inch pounds
- Minimum Bend Radius: 25.4 millimeters or 1.0 inch with or without armor
- Operating Temperature: Minus 51 degrees Celsius to plus 177 degrees Celsius
- Storage Temperature: Minus 51 degrees Celsius to plus 177 degrees Celsius
- Shipping Weight: 0.17 kilograms
Installation Guidelines
- Mount the probe into a compatible 5/8-18 UNF machine thread.
- Apply the recommended torque of 15.2 Newton meters during installation.
- Do not exceed the maximum torque limit of 45.2 Newton meters to prevent thread damage.
- Maintain a minimum bend radius of 25.4 millimeters for the coaxial cable.
- Keep the miniature coaxial ClickLoc connector clean and dry before mating.
- Ensure proper clearance between the probe tip and the target shaft.
Commissioning and Maintenance Convenience
- Verify DC resistance values before final system startup.
- Inspect the FEP cable insulation regularly for cuts or abrasions.
- Check connector security to prevent signal loss from vibration.
- Monitor proximity output voltages using standard diagnostic tools.
- Replace damaged O-rings if fluid sealing fails during operation.
Compatibility and Standards
- Compatible Hardware: Works with 5-meter Bently Nevada Proximitor Sensors.
- Thread Compatibility: Matches standard industrial 5/8-18 UNF mounting ports.
- Connector Standard: Utilizes ClickLoc miniature coaxial connection systems.
- Compliance: Meets multiple global hazardous area certification standards.
Certifications and Approvals
- Hazardous Location Ratings: Multiple approvals for diverse industrial environments.
- Temperature Classifications for EPL Ga and Gc: Supports T1 through T5 classifications based on ambient ranges.
- Temperature Classifications for EPL Dc: Supports surface temperature ratings from T90 degrees Celsius to T280 degrees Celsius.
Package Contents and Logistics
- Package Contents: One Bently Nevada 330708-00-20-50-02-05 proximity probe unit.
- Documentation: Standard manufacturer compliance sheet included.
- Processing Time: Orders ship within 12 to 48 hours.
- Logistics Partners: Fast dispatch via FedEx, UPS, and DHL.
- Warranty Protection: Full 12-month replacement or repair guarantee.
Suitable Devices and Application Scenarios
- Heavy Industrial Turbines: Monitors shaft vibration in large steam and gas turbines.
- Centrifugal Compressors: Tracks rotor radial position in high-speed compressors.
- Industrial Pumps: Measures dynamic movement in boiler feed water pumps.
- Gearboxes: Evaluates mechanical health in heavy-duty industrial gear drives.
- Generators: Protects critical electrical power generation machinery.
Expert Review and Manager Insight
- Expert Review: Engineers rely on this probe for precise vibration monitoring. The robust SST case withstands harsh industrial environments without signal degradation. The ClickLoc connector ensures secure wiring even under severe machine vibration.
- Manager Insight: Industrial plants choose this model for proven reliability and global safety approvals. Fast delivery options reduce costly facility downtime during scheduled maintenance outages.
Frequently Asked Questions
- Question: What is the exact length of this probe assembly?
- Answer: This model features a total length of 5.0 meters.
- Question: Can I use this probe with a one-meter driver?
- Answer: No, five-meter probes require matching five-meter Proximitor sensors.
- Question: What material forms the outer probe case?
- Answer: The outer case uses durable AISI 304 stainless steel.
- Question: How do I select the right replacement probe?
- Answer: Match your existing part number suffix codes exactly to ensure proper thread size, case length, and cable compatibility.
- Question: What causes premature seal failure in cold weather?
- Answer: Exposing the probe to temperatures below minus 34 degrees Celsius can damage the internal Viton seal.
Download Product Manual
- Please click Download Product Manual to access complete technical documentation and wiring diagrams for the Bently Nevada 330708-00-20-50-02-05.
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