Product Introduction
The Bently Nevada 330707-00-24-10-11-05 belongs to the trusted 3300 XL series, widely used in turbomachinery protection. This 11 mm proximity probe delivers non-contact displacement sensing for radial vibration, thrust position, and eccentricity measurements. Its rugged construction includes a polyphenylene sulfide (PPS) tip and a 304 stainless steel case, ensuring durability in harsh environments. Meanwhile, the FluidLoc cable and ClickLoc connector simplify installation while maintaining signal integrity. Many engineers choose this model for its straightforward mounting with standard 5/8-18 UNF threads. Additionally, its 1.0 metre overall length fits most retrofit and new build applications.
Technical Specifications
The 330707-00-24-10-11-05 probe uses a 75 Ω triaxial cable with FEP insulation, available in 1.0 metre total length. Its DC resistance from center conductor to outer conductor measures 5.9 ± 0.5 ohms, ensuring consistent output. The unthreaded length option is 0 inches, while the overall case length is 2.4 inches. For connectivity, this probe features a miniature coaxial ClickLoc connector with a protector, plus FluidLoc cable technology. Agency approvals include multiple certifications (option 05), making it suitable for global projects. Specifically, the probe tip material (PPS) resists chemical attack, and the case (AISI 304 SST) offers excellent corrosion resistance.
Mechanical & Environmental Parameters
This Bently Nevada probe handles an operating and storage temperature range of -51°C to +177°C (-60°F to +351°F). However, exposure below -34°C (30°F) may reduce pressure seal life. The probe case thread is 5/8-18 UNF with a maximum engagement length of 0.938 inches. For torque, the maximum rated value is 45.2 N•m (400 in•lb), while the recommended installation torque is 15.2 N•m (133 in•lb). The connector-to-connector torque should be finger tight, with a maximum of 0.565 N•m (5 in•lb). Moreover, the minimum bend radius for the cable (with or without SST armor) is 25.4 mm (1.0 inch). The probe also seals differential pressure between tip and case using a Viton O-ring, although it is not pressure tested before shipment.
Installation Guidelines
Before installing the 330707-00-24-10-11-05, always inspect the threaded hole for debris to avoid cross-threading. First, apply anti-seize compound on the 5/8-18 UNF threads if recommended by your site procedure. Next, hand-tighten the probe until the tip reaches the desired gap, then use a torque wrench to apply 15.2 N•m (133 in•lb). Remember to route the FluidLoc cable with a bend radius no less than 25.4 mm to prevent internal damage. Additionally, secure the ClickLoc connector by finger-tightening only; over-torquing may deform the connector protector. For optimal performance, confirm that the total probe length (1.0 metre) matches your extension cable requirements. Finally, avoid exposing the probe to temperatures below -34°C during storage, as this can compromise the Viton seal.
Packaging List
1 x Bently Nevada 330707-00-24-10-11-05 3300 XL 11 mm Proximity Probe
1 x Miniature coaxial ClickLoc connector protector (pre-installed)
1 x FluidLoc cable assembly (1.0 metre)
Installation torque specification card
Note: No mounting accessories, certificates, or warranty documents are included in the package.
Frequently Asked Questions (FAQ)
1. What machines commonly use the Bently Nevada 330707-00-24-10-11-05?
This probe is ideal for steam turbines, gas turbines, compressors, and large pumps where shaft vibration and position monitoring are critical.
2. Can I extend the 1.0 metre cable of this 3300 XL probe?
Yes, you can use Bently Nevada extension cables (e.g., 3300 XL 8 mm or 11 mm series) to reach up to 9 metres total system length.
3. How do I check if the 330707-00-24-10-11-05 is compatible with my existing system?
Verify your system uses 5/8-18 UNF mounting threads and accepts 75 Ω triaxial probes with ClickLoc connectors. Also, confirm the overall length fits your gap setting range.
4. What happens if I exceed the recommended torque on this probe?
Over-torquing can strip the 5/8-18 threads or deform the case, leading to measurement errors or permanent probe failure. Always stick to 15.2 N•m.
5. Is the 330707-00-24-10-11-05 suitable for subsea or high-humidity areas?
The FluidLoc cable and Viton O-ring provide good moisture resistance, but for subsea use, contact Bently Nevada for specialized sealing options.
