Bently Nevada 330106-05-30-10-02-00‌ 3300 XL series 8mm Reverse Mount Proximity Probe‌

Description

‌Product Specific Information‌

The ‌Bently Nevada 330106-05-30-10-02-00‌ is a ‌3300 XL series 8mm Reverse Mount Proximity Probe‌. This specialized probe is designed for applications where standard forward-mount probes cannot be installed due to severe axial space constraints behind the machinery casing. It enables precise, non-contact measurement of shaft vibration and position (radial and axial) in critical rotating equipment, such as turbines and compressors. Its reverse-mount design allows installation from the “back side” of the bearing housing, making it an essential solution for retrofit projects or tightly packaged machinery.

‌Technical Parameters (Specifications)‌

‌Compatibility & Integration‌

• ‌System Compatibility:‌ This probe is fully compatible with the ‌Bently Nevada 3300 XL 8 mm Proximitor® Sensor‌ (e.g., 330180-50-00) and the entire ‌3500 Series Machinery Protection System‌ (e.g., 3500/42M Vibration Monitor, 3500/32M Displacement Monitor).
• ‌Mechanical Compatibility:‌ The M10 x 1 thread requires a correspondingly tapped reverse-mount hole in the machinery casing. It is ‌not‌ interchangeable with standard forward-mount probes without proper adapter and housing modification.
• ‌Electrical Compatibility:‌ The Miniature ClickLoc connector is designed to mate with standard 3300 XL extension cables and directly into the Proximitor.

‌Installation Pitfalls to Avoid‌

1. ‌Incorrect Gap Setting:‌ The mechanical gap (distance between probe tip and shaft surface) is critical. ‌Always use a micrometer or feeler gauge to set the gap to the specification provided by the machinery OEM or Bently Nevada.‌ Do not rely solely on the gap voltage until the system is powered and calibrated.
2. ‌Improper Thread Engagement & Sealing:‌ Ensure the M10 threads are clean and undamaged. Use the correct sealant (if specified) on the threads to prevent oil leakage and secure the probe, but avoid contaminating the sensing tip.
3. ‌Cable Strain & Routing:‌ The 1.0-meter integral cable is relatively short. Avoid sharp bends (minimum bend radius typically 25mm) and ensure the cable is not under tension, which can damage internal connections. Use proper cable clamps.
4. ‌Target Surface Condition:‌ The shaft surface in front of the probe tip must be clean, smooth, and free of coatings, scratches, or magnetism, as these can severely affect measurement accuracy.
5. ‌Misalignment:‌ The probe must be mounted perpendicular to the shaft surface. Any angular misalignment will introduce measurement error.

‌Standard Operating Procedure (SOP) Outline‌

‌1. Pre-Installation:‌

• Verify machinery is locked out/tagged out (LOTO) and safe for work.
• Confirm the probe part number (330106-05-30-10-02-00) matches the requisition and application drawing.
• Inspect the probe tip and cable for any physical damage.
• Clean and inspect the mounting hole threads in the casing.

‌2. Mechanical Installation:‌

• Apply a small amount of recommended thread sealant (e.g., Loctite 577) if specified.
• Hand-thread the probe into the mounting hole, ensuring it goes in straight.
• Using a gap setting tool, adjust the probe depth to achieve the specified mechanical gap (e.g., 1.0 mm / 40 mils).
• Tighten the lock nut to the specified torque while holding the probe body to prevent rotation.

‌3. Electrical Connection:‌

• Route the cable gently to the junction box or Proximitor.
• Connect the Miniature ClickLoc connector to the mating extension cable or directly to the 3300 XL Proximitor.
• Ensure the connection is secure and the locking mechanism is engaged.

‌4. Commissioning & Verification:‌

• Power up the associated 3500 Series monitor.
• Verify the gap voltage (-V dc) reading on the monitor is within the acceptable range (typically -9 to -11 V dc for a properly set gap).
• Perform a “bump test” or slow-roll the rotor to observe dynamic voltage changes, confirming the system is operational.

‌Typical Application Scenarios‌

• ‌Retrofit Projects on Steam/Gas Turbines:‌ Where existing casing design lacks space for standard probe installation.
• ‌Centrifugal Compressors:‌ Particularly in high-pressure stages with compact bearing housing designs.
• ‌Auxiliary Equipment with Space Constraints:‌ Such as small turbines, pumps, or fans where bearing housing space is minimal.
• ‌API 670 Compliant Machinery Protection Systems:‌ As part of a certified monitoring system for critical equipment.

‌Recommended Supporting Components‌

For a functional measurement loop, this probe requires:

1. ‌Proximitor® Power Supply & Sensor:‌ 3300 XL 8 mm Proximitor® (e.g., 330180-50-00).
2. ‌Extension Cable:‌ Cable with matching Miniature ClickLoc connector on one end and the required connector for the Proximitor or monitor on the other (length as per site requirement).
3. ‌Monitor Module:‌ Bently Nevada 3500/42M (Vibration) or 3500/32M (Displacement/Position) module in a 3500 Series rack.
4. ‌Mounting Hardware:‌ Appropriate lock nuts, sealing washers, and conduit fittings as per the installation drawing.
5. ‌Calibration & Test Equipment:‌ TK-3 Proximitor Tester or equivalent for system calibration and troubleshooting.

‌Related Model Recommendations‌

1. ‌Standard Forward-Mount Alternative:‌ ‌330103-00-05-10-02-00‌ – 3300 XL 8mm Standard Mount Probe with 1.0m cable, for applications with sufficient axial space.
2. ‌Longer Cable Variant:‌ ‌330106-05-30-15-02-00‌ – Identical reverse mount probe but with a 1.5m integral cable for longer routing distances.
3. ‌Compatible Proximitor:‌ ‌330180-50-00‌ – The standard 3300 XL 8 mm Proximitor® sensor required to power the probe and convert gap change to a voltage signal.
4. ‌System Monitor:‌ ‌3500/42M-01-00-00-00‌ – 4-Channel Vibration Monitor for processing the signal from up to four such probe/Proximitor pairs.