Bently Nevada 330106-05-30-20-02-05 Reverse Mount Probe

Bently Nevada 330106-05-30-20-02-05 3300 XL 8 mm Reverse Mount Probe

Product Introduction

The Bently Nevada 330106-05-30-20-02-05 belongs to the trusted 3300 XL series. This 8 mm reverse mount probe is engineered for non-contact vibration and position sensing on rotating equipment. Many plants rely on this 3300 XL probe for steam turbines, compressors, and pumps.

The model 330106-05-30-20-02-05 includes a 2.0-meter total cable length. Its M10x1 thread allows straightforward installation in standard mounting holes. Furthermore, the Miniature ClickLoc coaxial connector ensures a secure and quick connection. This reverse mount probe handles high temperatures and harsh conditions without losing accuracy.

Additionally, this unit carries CSA, ATEX, and IECEx approvals. Therefore, you can safely use it in potentially explosive atmospheres. Its construction uses PPS for the tip and AISI 303/304 stainless steel for the case. These materials provide excellent chemical resistance and mechanical strength.

Technical Specifications

This Bently Nevada 330106-05-30-20-02-05 offers precise DC resistance characteristics. The nominal probe resistance (RPROBE) from center to outer conductor measures 7.88 Ω ± 0.50 at 2.0 meters. This consistency ensures reliable signal transmission to your monitoring system.

The probe cable uses 75Ω triaxial construction with FEP insulation. For extended temperature needs, PFA-insulated cable is also available. The standard cable lengths range from 0.5 to 9 meters. Moreover, you can order optional flexible armor made of AISI 302/304 SST with an FEP outer jacket.

The connector material is gold-plated brass or beryllium copper. This choice minimizes contact resistance and corrosion. The tensile strength rating reaches 330 N (75 lbf) from case to lead, and 270 N (60 lbf) at lead-to-extension connectors. These figures guarantee durability during installation and operation.

Mechanical and Environmental Ratings

The probe case thread is M10x1 with a maximum engagement length of 15 mm. The unit weighs 323 g per meter (11.4 oz/m), making it light enough for easy handling.

For temperature performance, the standard 3300 XL probe operates from -52°C to +177°C (-62°F to +350°F). Meanwhile, the extended temperature version supports up to +218°C (+425°F) at the tip and +260°C (+500°F) for the cable. Please note that exposing the probe below -34°C (-30°F) may damage the pressure seal.

The pressure seal uses a Viton® O-ring to block differential pressure between tip and case. Although each unit is not pressure-tested before shipment, you can request custom testing. Furthermore, humidity testing shows less than 3% ASF change after 56 days at 93% relative humidity per IEC 68-2-3.

Installation Guidelines

Follow these steps to install the Bently Nevada 330106-05-30-20-02-05 correctly:

• Thread preparation : Clean the M10x1 mounting hole thoroughly. Use a thread gauge to verify the hole depth.

• Cable routing : Avoid sharp bends near the connector. Maintain a minimum bend radius of 50 mm.

• Torque setting : Tighten the probe case to 20–30 N·m. Over-tightening may strip the threads.

• Connector mating : Align the Miniature ClickLoc connector and push until it clicks. Then pull gently to confirm the lock.

• Cable securing : Use cable ties every 300 mm to prevent vibration-induced chafing.

After installation, check the air gap between the probe tip and the target surface. A typical gap for this reverse mount probe is 1.5 mm to 2.5 mm, depending on your application. Use a calibrated proximity meter to set the initial voltage. Finally, perform a run-out test before starting the machine.

Packaging List

Your shipment for the Bently Nevada 330106-05-30-20-02-05 includes:

• 1 x 3300 XL 8 mm reverse mount probe with 2.0 m cable and ClickLoc connector

• 1 x mounting instruction sheet (quick-start guide)

• 1 x anti-static protective bag for storage

• 1 x shipping carton with foam inserts

Shipping method : FedEx, UPS, or DHL (tracking number provided upon dispatch).

Frequently Asked Questions

1. Can I use this 3300 XL probe with an existing Bently Nevada extension cable?
Yes, the 330106-05-30-20-02-05 uses a standard Miniature ClickLoc connector. It is fully compatible with Bently Nevada extension cables that have the same connector type.

2. What is the maximum cable length I can extend this reverse mount probe to?
You can extend it up to 9 meters total using approved extension cables. However, keep the total system length within the driver’s calibration range for best accuracy.

3. Is the probe tip replaceable if it gets damaged?
No, the tip is not field-replaceable. You must replace the entire Bently Nevada 330106-05-30-20-02-05 if the tip is worn or broken.

4. How do I clean the probe tip without affecting its performance?
Use a soft cloth with isopropyl alcohol. Avoid abrasive materials that could scratch the PPS surface. Always let it dry completely before reinstallation.

5. Does this probe work in high-vibration environments like a reciprocating compressor?
Yes, the 3300 XL series is designed for severe machinery applications. The robust case and cable armor option provide excellent resistance to continuous vibration.