Bently Nevada 330101-23-38-10-02-00 | 3300 XL 8mm Probe

330101-23-38-10-02-00 Product Introduction

The Bently Nevada 330101-23-38-10-02-00 forms the front-end sensing element of the renowned 3300 XL 8 mm Proximity Transducer System. This non-contact eddy-current probe excels at measuring both static (position) and dynamic (vibration) values of conductive targets. It is a primary choice for fluid-film bearing machines, providing critical data for predictive maintenance and machine protection.

Engineered for robustness, this 3300 XL 8 mm probe incorporates patented TipLoc and CableLoc designs. These features deliver a stronger bond between the probe tip and body while offering 330 N (75 lbf) pull strength for the cable. Additionally, the larger 8 mm diameter provides thicker PPS plastic encapsulation, resulting in a more rugged case that withstands physical abuse better than smaller probes.

Key Technical Specifications

The 330101-23-38-10-02-00 offers a linear range of 2 mm (80 mils), starting from approximately 0.25 mm (10 mils) off the target. Its Incremental Scale Factor (ISF) is 7.87 V/mm (200 mV/mil) with a ±5% interchangeability error for standard systems. Furthermore, the nominal DC resistance from center to outer conductor measures 7.59 ± 0.50 Ω for this 1.0-meter configuration.

For installation, the recommended gap setting for radial vibration is -9 Vdc, which corresponds to roughly 1.27 mm (50 mils). Meanwhile, the probe's case thread is 3/8-24 UNF, and the recommended installation torque is 11.2 N•m (100 in•lbf). The maximum thread engagement length is 0.563 inches, ensuring secure mounting in standard probe holders.

This model features the 02 connector and cable option, which includes a Miniature coaxial ClickLoc connector with standard cable. The 23 unthreaded length option specifies 2.3 inches, while the 38 overall case length option is 3.8 inches. The 10 total length option provides a 1.0-meter (3.3 feet) cable, making it suitable for various machine configurations without requiring extension cables.

Environmental and Mechanical Ratings

The Bently Nevada 330101-23-38-10-02-00 operates across a wide temperature range. The standard probe tip withstands -52°C to +177°C (-62°F to +350°F). However, keep in mind that exposing the probe to temperatures below –34˚C (-30˚F) may cause premature failure of the pressure seal. The probe case uses AISI 303 or 304 stainless steel, while the tip material is rugged Polyphenylene sulfide (PPS).

Regarding pressure ratings, the 3300 XL 8 mm probes are designed to seal differential pressure between the tip and case using a Viton® O-ring. Although they are not pressure-tested prior to shipment, you can contact the custom design department if your application requires a specific pressure seal test. Additionally, the probe shows less than a 3% change in Average Scale Factor (ASF) when tested in 93% humidity per IEC standard 68-2-3 for up to 56 days.

For hazardous area installations, the 330101-23-38-10-02-00 follows specific temperature schedules. For EPL Ga and Gc, classifications range from T1 (ambient -55°C to +232°C) down to T5 (ambient -55°C to +40°C). For EPL Dc, classifications include T280°C, T225°C, T170°C, T130°C, T105°C, and T90°C with corresponding ambient temperature ranges.

Installation Guidelines

Proper installation of the 3300 XL 8 mm probe ensures accurate and reliable measurements. First, observe the thread engagement limits: the maximum length is 0.563 inches. Use the recommended torque of 11.2 N•m (100 in•lbf) for standard forward-mounted probes. For the first three threads, the recommended torque is 7.5 N•m (66 in•lbf). These torque values prevent damage to the probe case while maintaining secure mounting.

Field wiring requires 0.2 to 1.5 mm² (16 to 24 AWG) cables, preferably using 3-conductor shielded triad cable with tinned wiring. The maximum length between the 3300 XL Proximitor Sensor and the monitor is 305 meters (1,000 feet). Be aware that longer field wiring lengths may cause signal rolloff at high frequencies, so consult the frequency response graphs for your specific application.

The probe's CableLoc design provides 330 N (75 lbf) pull strength, securely attaching the probe cable and tip. Additionally, you can order this probe with an optional FluidLoc cable option, which prevents oil and other liquids from leaking out of the machine through the cable's interior. This feature proves especially valuable in oil-filled bearing housings.

Packaging List

Your shipment of the Bently Nevada 330101-23-38-10-02-00 includes the following items:

• 330101-23-38-10-02-00 3300 XL 8 mm Probe (1 unit)

• Protective shipping cap for the probe tip

• Installation instruction sheet (quick-start guide)

• Anti-static packaging bag for safe transport

Note: The package does not include calibration certificates, quality warranty documents, or mounting hardware. These items must be ordered separately if required.

Shipping Information

All orders ship via FedEx, UPS, or DHL with full tracking and insurance coverage. Standard delivery times range from 3 to 7 business days depending on your location. Expedited shipping options are available upon request for urgent deliveries.

Frequently Asked Questions (FAQ)

1. What is the difference between the 330101-23-38-10-02-00 and standard 5mm probes?
The 330101-23-38-10-02-00 uses an 8 mm diameter probe body with thicker PPS encapsulation, providing superior ruggedness and durability. It withstands more physical abuse compared to 5 mm probes, making it the preferred choice for demanding industrial environments.

2. Can I use this probe with a 9-meter extension cable?
Yes, you can. However, note that the Incremental Scale Factor changes to ±6.5% for 9-meter systems. Additionally, the Deviation from best fit straight line (DSL) becomes ±0.038 mm (±1.5 mil) instead of ±0.025 mm (±1 mil) for 1-meter systems.

3. What is the purpose of the unthreaded length option (23 = 2.3 in)?
The unthreaded length option determines how much of the probe body remains unthreaded before the threads start. This configuration ensures proper positioning within the probe holder, preventing bottoming out and allowing correct gap adjustments.

4. Is this probe suitable for submersible or oil-filled applications?
While the 3300 XL 8 mm probe seals differential pressure with a Viton O-ring, it is not pressure-tested before shipment. For oil-filled or submersible applications, Bently Nevada recommends using the optional FluidLoc cable option to prevent fluid leakage through the cable interior. Contact the custom design department for pressure testing if required.

5. What monitors are compatible with the 330101-23-38-10-02-00?
This probe works with all Bently Nevada monitoring systems that accept 3300 XL Proximitor Sensor inputs, including the 3500 Series, 2300 Series, and DNV-approved systems. Always verify that your monitor's input specifications match the 7.87 V/mm scale factor for proper calibration.