Bently Nevada 330101-30-63-15-02-CN 3300 XL 8 mm Probe

Product Introduction

The Bently Nevada 330101-30-63-15-02-CN belongs to the trusted 3300 XL series of proximity probes. This 8 mm probe uses a 3/8-24 UNF thread and comes without armor, providing installation flexibility for various machine casings. Notably, it offers a 3.0-inch unthreaded length and a 6.3-inch overall case length, making it suitable for deeper mounting holes.

Manufactured in the U.S.A., this model is designed for radial vibration and axial position measurement in turbines, compressors, and pumps. Its PPS probe tip encapsulates the coil with thicker material, enhancing resistance to physical damage. Additionally, the stainless steel case ensures long-term structural integrity. For these reasons, this probe is a preferred choice for critical machinery protection systems.

Mechanical Configuration and Dimensions

Unthreaded and Case Lengths
This version includes a 3.0-inch unthreaded length (option 30) and a 6.3-inch overall case length (option 63). These dimensions allow the probe to reach deeper into the machine casing while keeping the threads fully engaged for secure mounting.

Total Cable Length
The total length option is 15, which corresponds to 1.5 meters (4.9 feet). This shorter cable length minimizes signal attenuation and simplifies routing in compact installations. Furthermore, it works seamlessly with 1-meter or 5-meter Proximitor sensor systems.

Technical Specifications

Linear Range and Scale Factor
This probe delivers a linear range of 2 mm (80 mils), starting from 0.25 mm to 2.3 mm (10 to 90 mils). The incremental scale factor (ISF) is 7.87 V/mm (200 mV/mil) ± 5% for standard 1-meter or 5-meter systems. Moreover, the deviation from best fit straight line (DSL) remains below ±0.025 mm (±1 mil) within 0°C to +45°C.

Electrical Characteristics
The nominal DC resistance (RPROBE) from center to outer conductor measures 7.59 ± 0.50 Ω for this 1.0-meter probe. Meanwhile, the extension cable capacitance is typically 69.9 pF/m (21.3 pF/ft). For field wiring, we suggest using 0.2 to 1.5 mm² (16 to 24 AWG) 3-conductor shielded triad cable. The maximum field wiring length between the Proximitor sensor and the monitor is 305 meters (1,000 feet).

Environmental Ratings
The probe tip is made of polyphenylene sulfide (PPS), and the case uses AISI 303 or 304 stainless steel. Standard operating temperature ranges from -52°C to +177°C. For higher temperatures, an extended range option is available (tip up to +218°C). However, exposure below –34°C may shorten the pressure seal's lifespan.

Humidity and Pressure
A Viton® O-ring seals differential pressure between the tip and the case. Additionally, the probe shows less than 3% change in average scale factor after 56 days at 93% relative humidity, per IEC 68-2-3. This ensures reliable performance even in humid environments.

Installation and Mounting Guidelines

Gap Setting and Thread Engagement
For radial vibration monitoring, set the gap to -9 Vdc, which corresponds to approximately 1.27 mm (50 mils). The 3/8-24 UNF thread allows a maximum engagement length of 0.563 inches. First, clean the mounting hole thoroughly. Next, thread the probe carefully by hand. Finally, torque it to the recommended value.

Torque Recommendations
For standard forward-mounted probes, the maximum rated torque is 33.9 N•m (300 in•lbf), while we recommend 11.2 N•m (100 in•lbf). For the first three threads only, the maximum torque is 22.6 N•m (200 in•lbf) with a recommended setting of 7.5 N•m (66 in•lbf). Overtightening can damage the threads or the probe body, so always use a calibrated torque wrench.

Packaging List

• 1 x Bently Nevada 330101-30-63-15-02-CN 3300 XL 8 mm Probe (1.5m cable)

• 1 x Miniature coaxial ClickLoc connector (pre-attached)

• 1 x Installation instruction sheet

This package does not include calibration certificates or warranty documents.

Shipping Information

We ship this probe worldwide via FedEx, UPS, or DHL with tracking numbers provided. The product is carefully packed in anti-static and shock-absorbing materials to prevent transit damage. Please inspect the shipment upon arrival and contact us immediately if any issues are found.

Frequently Asked Questions (FAQ)

1. What is the advantage of the 3.0-inch unthreaded length?
This longer unthreaded section allows the probe to reach sensors deeper inside the machine casing while keeping the threaded portion fully engaged. It provides greater installation flexibility for thick-walled housings.

2. Can I pair this probe with a 9-meter Proximitor system?
No, this 1.5-meter probe is designed for 1-meter or 5-meter Proximitor sensors only. For 9-meter systems, you would need a probe with a 5.0-meter or 9.0-meter total length.

3. What does the CN agency approval indicate?
The CN option signifies country-specific approvals, typically for China (CCC) or other regional certifications. Please verify with your local authority if this matches your site requirements.

4. Is the ClickLoc connector compatible with standard coaxial cables?
The ClickLoc connector is a miniature coaxial type designed for secure, quick connections with matching Bently Nevada extension cables. It is not compatible with standard BNC or SMA connectors without an adapter.

5. How do I prevent oil leakage through the probe cable?
You can order the optional FluidLoc cable feature, which prevents oil and other liquids from migrating through the cable interior. This is highly recommended for machines with pressurized lubrication systems.