Bently Nevada 330708-00-10-50-02-00 3300 XL Probe

3300 XL 11 mm Proximity Probe – Bently Nevada 330708

Product Introduction

The Bently Nevada 330708-00-10-50-02-00 is a high-performance 11 mm proximity probe from the trusted 3300 XL series. It is specifically engineered for non-contact displacement and vibration monitoring on rotating machinery. This model features a 5/8-18 UNF thread without armor, and includes a 5.0 meter FEP insulated triaxial cable. Additionally, it uses a miniature coaxial ClickLoc connector for secure and quick installation. Its rugged construction ensures stable operation across a broad temperature range. Therefore, it is an ideal choice for turbines, compressors, and pumps.

Technical Specifications

Electrical Characteristics
The probe’s DC resistance from the center conductor to the outer conductor is 7.2 ± 0.8 ohms. Meanwhile, the cable impedance is 75 Ω triaxial, which guarantees signal integrity. The system operates with a standard 3300 XL proximity driver (sold separately) for linear output.

Mechanical Dimensions

• Unthreaded Length Option: 00 = 0 inches

• Overall Case Length Option: 10 = 1.0 inch

• Total Length Option: 50 = 5.0 meters (16.4 feet)

• Connector Option: 02 = Miniature coaxial ClickLoc connector, standard cable

• Agency Approval: 00 = Not required

Materials and Durability

• Probe Tip: Polyphenylene sulfide (PPS) – resistant to chemicals and wear.

• Probe Case: AISI 304 stainless steel (SST) – provides excellent corrosion resistance.

• Cable Insulation: Fluoroethylene propylene (FEP) – ensures durability at extreme temperatures.

Environmental and Mechanical Ratings

Temperature Range

• Operating and Storage: -51°C to +177°C (-60°F to +351°F)

• However, exposing the probe below -34°C (30°F) may shorten the pressure seal’s life.

Pressure and Sealing
The 3300 XL probe is designed to seal differential pressure between the tip and the case. A Viton® O-ring provides the sealing. Nevertheless, units are not pressure tested before shipping. If your application requires a pressure test, please contact the custom design department.

Thread and Torque Specifications

• Case Thread: 5/8-18 UNF

• Maximum Thread Engagement: 0.938 inches

• Maximum Rated Torque: 45.2 N•m (400 in•lb)

• Recommended Torque: 15.2 N•m (133 in•lb)

• Connector-to-Connector Torque: Finger tight (max 0.565 N•m / 5 in•lb)

• Minimum Bend Radius: 25.4 mm (1.0 inch) – with or without armor.

Installation Guidelines

First, ensure the mounting surface is clean and the target shaft is within the specified range. Next, thread the Bently Nevada 330708 probe into the mounting hole using the recommended torque of 15.2 N•m. Do not overtighten, as this may damage the thread or the internal components. Then, connect the ClickLoc connector by hand until it clicks; do not use tools beyond finger tight. Finally, route the cable with a bend radius of at least 25.4 mm to avoid kinking. For optimal performance, pair this probe with the appropriate 3300 XL extension cable and driver.

Packaging List

• 1 x Bently Nevada 330708-00-10-50-02-00 Proximity Probe (assembled with 5.0 m cable and ClickLoc connector)

• 1 x Installation instruction sheet (quick start guide)

• 1 x Protective plastic cap for the probe tip

Note: Drivers, extension cables, and mounting hardware are not included and must be ordered separately.

Shipping Information

All orders are shipped via FedEx, UPS, or DHL with tracking numbers. Delivery typically takes 3–5 business days for in-stock items. For urgent requests, please contact our sales team to arrange expedited shipping options.

Frequently Asked Questions (FAQ)

1. What is the total length of the cable on this model?
The total length is 5.0 meters (16.4 feet), which is suitable for most standard machine installations. For longer runs, consider using an extension cable.

2. Can I use this probe in a high-pressure environment?
Yes, the probe is designed to seal differential pressure with a Viton O-ring. However, it is not pressure tested at the factory. For pressure-seal validation, please contact the custom design department.

3. What is the difference between the 330708 and standard 3300 probes?
The 330708 specifically has a 5/8-18 UNF thread, a 1.0-inch case length, and a 5.0-meter cable with a Miniature ClickLoc connector. Other models may vary in thread size, length, or connector type.

4. Is the probe compatible with third-party extension cables?
For best accuracy and signal stability, use only genuine Bently Nevada extension cables and drivers. Third-party cables may alter the impedance and reduce measurement accuracy.

5. How should I clean the probe tip before installation?
Use a soft, lint-free cloth with isopropyl alcohol. Gently wipe the PPS tip – do not use abrasive materials or solvents that could damage the surface.