Bently Nevada 330708-00-40-10-02-00 11 mm Probe

Product Introduction

The Bently Nevada 330708-00-40-10-02-00 represents a robust solution within the 3300 XL platform, engineered for precision proximity measurement in critical rotating machinery. This 11 mm probe provides non-contact vibration and position sensing, making it ideal for radial vibration, thrust position, and speed measurement applications. Its construction includes a PPS tip and AISI 304 stainless steel case, offering excellent durability in demanding industrial environments. Notably, this variant comes without armor and with a standard cable configuration, providing cost-effective flexibility for many installation scenarios.

Technical Specifications

The 3300 XL 11 mm Proximity Probe incorporates a 75 Ω triaxial cable with FEP insulation, delivering consistent signal transmission over its 1.0 metre (3.3 feet) total length. The DC resistance between the center conductor and outer conductor measures 5.9 ± 0.5 ohms, facilitating straightforward system calibration and interchangeability. Specifically, the probe case utilizes a 5/8-18 UNF thread with a maximum engagement length of 0.938 inches, accommodating various mounting block designs. Additionally, the recommended installation torque is 15.2 N•m (133 in•lb), while the maximum rated torque reaches 45.2 N•m (400 in•lb). For the connector interface, finger-tight torque suffices for proper mating, with an absolute maximum of 0.565 N•m (5 in•lb) to prevent thread or contact damage. This model includes the "00" agency approval option, indicating no specific certification requirements, which simplifies procurement for standard industrial applications.

Mechanical and Environmental Ratings

Engineered for harsh environments, this probe operates reliably across a temperature range of -51°C to +177°C (-60°F to +351°F) for both operation and storage. However, sustained exposure below -34°C (30°F) may accelerate wear on the Viton O-ring pressure seal. The probe cable maintains a minimum bend radius of just 25.4 mm (1.0 inch), even without armor, allowing flexible routing in confined machine spaces. Furthermore, the PPS tip material provides outstanding chemical resistance, while the AISI 304 SST case ensures corrosion protection in humid or mildly corrosive atmospheres.

Installation Guidelines

Installing the Bently Nevada 330708-00-40-10-02-00 requires following specific torque and alignment procedures. First, inspect the mounting hole to ensure the 5/8-18 thread is clean and undamaged. Next, hand-thread the probe into position until it seats against the mounting surface. Then, apply the recommended torque of 15.2 N•m using a torque wrench, avoiding overtightening which could stress the case or affect measurement accuracy. Meanwhile, route the cable with careful attention to the 25.4 mm minimum bend radius, preventing internal conductor damage. For optimal differential pressure sealing, ensure the Viton O-ring is properly seated before final tightening. If your application requires verifying the pressure seal integrity, consult Bently Nevada's engineering team for custom testing options prior to installation.

Packaging List

• Bently Nevada 330708-00-40-10-02-00 3300 XL 11 mm proximity probe (1 unit)

• Attached 1.0 metre triaxial FEP-insulated standard cable

• Miniature coaxial ClickLoc connector (pre-installed)

• Torque specification reference card

• Product identification and traceability label

FAQ

1. What does the "without armor" specification mean for this probe?
This 330708-00-40-10-02-00 does not include stainless steel armor over the cable, making it lighter and more flexible for installations where mechanical protection is not critical.

2. Can I use this probe with a 5/8-18 UNF mounting hole?
Yes, the 3300 XL probe features a 5/8-18 UNF thread specifically designed for standard North American mounting hardware.

3. What is the significance of the "10" in the model number?
The "10" indicates the total cable length option, representing 1.0 metre (3.3 feet) for this particular configuration.

4. Is this probe suitable for axial thrust position measurement?
Absolutely, the 3300 XL series excels at both radial vibration and axial thrust position monitoring in turbines, compressors, and pumps.

5. How is this item shipped?
All orders are dispatched via FedEx, UPS, or DHL with comprehensive tracking and protective packaging to guarantee safe arrival.