Bently Nevada 330708-00-10-90-02-00 3300 XL 11mm Probe

Bently Nevada 330708-00-10-90-02-00 – 3300 XL 11mm Proximity Probe

Product Introduction

The Bently Nevada 330708-00-10-90-02-00 is a trusted member of the 3300 XL series. This 11 mm proximity probe is specifically designed for non-contact vibration and position monitoring of rotating machinery. As a result, it plays an essential role in predictive maintenance programs for turbines, compressors, and pumps. Its rugged construction guarantees long-term stability, even in challenging thermal environments. Moreover, this particular model carries the agency approval option 00, meaning no formal certification is required for its use.

Core Technical Parameters

This Bently Nevada 330708 probe features a Polyphenylene sulfide (PPS) tip, which provides excellent resistance to chemicals and wear. Additionally, the probe case is fabricated from AISI 304 stainless steel (SST) for superior corrosion resistance. The probe comes with a 75 Ω triaxial FEP-insulated cable that measures 9.0 meters in total length. For signal accuracy, the DC resistance from the center conductor to the outer conductor is rated at 8.5 ± 1.1 ohms. Furthermore, the assembly includes a miniature coaxial ClickLoc connector that ensures a secure and reliable connection. The agency approval code 00 indicates that this model does not require multiple certifications, making it a cost-effective choice.

Environmental and Mechanical Specifications

The operating and storage temperature range for this probe spans from -51°C to +177°C (-60°F to +351°F). However, extended exposure below -34°C (30°F) may reduce the pressure seal's lifespan. The probe case thread is 5/8-18 UNF, with a maximum thread engagement of 0.938 inches. For installation, the recommended torque is 15.2 N•m (133 in•lb), while the maximum allowable torque is 45.2 N•m (400 in•lb). Meanwhile, the connector should only be finger-tightened, not exceeding 0.565 N•m (5 in•lb). Additionally, the cable's minimum bend radius is 25.4 mm (1.0 inch), regardless of armor presence.

Installation Best Practices

First, confirm that the mounting hole is clean and properly tapped for the 5/8-18 UNF thread. Next, thread the Bently Nevada 330708 probe into the housing while observing the gap voltage on a compatible monitor. Specifically, use a torque wrench set to 15.2 N•m to achieve optimal tightness without damaging the case. Then, attach the ClickLoc connector by turning it finger-tight only; tools are not required. For cable routing, ensure all bends maintain a radius larger than 25.4 mm to prevent internal conductor stress. Finally, verify the electrical integrity by measuring the resistance between conductors, which should read 8.5 ± 1.1 ohms.

Packaging and Logistics

Each package includes the following items:

• 1 x Bently Nevada 330708-00-10-90-02-00 probe assembly with 9‑meter cable

• 1 x ClickLoc connector (pre-installed from factory)

• 1 x Installation reference sheet

All shipments are dispatched worldwide via FedEx, UPS, or DHL to ensure rapid and trackable delivery. Please note that calibration certificates and warranty documents are not included in this standard packaging.

Frequently Asked Questions

1. What does the agency approval option 00 mean for this Bently Nevada 330708 probe?
It means this model does not carry any specific agency certifications. Therefore, it is ideal for facilities that do not require formal approvals like ATEX or CSA.

2. Is this probe suitable for high-pressure applications?
Yes, it uses a Viton O-ring to seal differential pressure. Nevertheless, it is not pressure-tested before shipment. For testing needs, please contact the custom design department.

3. Can I extend the 9‑meter cable of this 3300 XL probe?
Yes, you can use Bently Nevada extension cables. However, remember to recalculate the total system resistance to maintain measurement precision.

4. What is the minimum bend radius for the probe cable?
The minimum bend radius is 25.4 mm (1.0 inch) for both armored and unarmored versions. Exceeding this limit can degrade signal quality.

5. How should I clean the PPS probe tip before installation?
Use a soft, lint-free cloth lightly moistened with isopropyl alcohol. Gently wipe the tip without applying abrasive force to avoid surface scratches.