Bently Nevada 330709-000-080-50-11-05 3300 XL 11 mm Proximity Probe

Product Introduction

The Bently Nevada 330709-000-080-50-11-05 is a 3300 XL 11 mm proximity probe designed for reliable, non-contact vibration and position measurement in critical rotating machinery. This model features an M16x1.5 thread, 80 mm overall case length, and a 5.0 meter (16.4 ft) FluidLoc cable with miniature coaxial ClickLoc connector. It is manufactured in the U.S.A. and carries multiple agency approvals.

Technical Parameters

• Probe Type: 3300 XL 11 mm, without armor
• Thread: M16x1.5
• Unthreaded Length: 0 mm
• Overall Case Length: 80 mm
• Total Length: 5.0 meters (16.4 feet)
• Connector: Miniature coaxial ClickLoc with connector protector, FluidLoc cable
• Agency Approval: Multiple Approvals
• Probe DC Resistance (RPROBE): 7.2 ± 0.8 ohms
• Probe Tip Material: Polyphenylene sulfide (PPS)
• Probe Case Material: AISI 304 stainless steel
• Probe Cable: 75 Ω triaxial, FEP insulated
• Operating Temperature: -52°C to +177°C (-62°F to +351°F)
• Probe Case Torque (max): 63.3 N•m (560 in•lb); recommended: 21.1 N•m (187 in•lb)
• Connector-to-connector torque: finger tight (max 0.565 N•m)
• Minimum Bend Radius: 25.4 mm (1.0 in)
• Maximum Thread Engagement: 24 mm

Parameter Analysis

The 5.0 meter probe length is specifically designed for use with the 5.0 meter Proximitor Sensor, ensuring proper impedance matching and signal integrity. The 80 mm case length provides flexibility for mounting in various machine configurations. The M16x1.5 thread is a standard industrial mounting thread, and the recommended torque of 21.1 N•m ensures secure installation without damaging the probe. The PPS tip offers excellent chemical resistance and thermal stability, while the stainless steel case provides durability in harsh environments.

Application Scenarios

This proximity probe is ideal for monitoring vibration and axial position in a wide range of rotating machinery, including:

• Turbines (steam, gas, hydro)
• Compressors
• Pumps
• Electric motors
• Generators
• Gearboxes

It is commonly used in oil & gas, power generation, petrochemical, and other process industries where reliable condition monitoring is critical.

Installation Guide

When installing the 330709-000-080-50-11-05, follow these guidelines:

• Ensure the target surface is clean and free of runout.
• Recommended minimum target diameter: 30.5 mm (1.2 in) for flat surfaces; minimum shaft diameter: 152 mm (6.0 in).
• Thread engagement must not exceed 24 mm.
• Tighten the probe case to the recommended torque of 21.1 N•m (187 in•lb). Do not exceed 63.3 N•m (560 in•lb).
• Connector-to-connector torque should be finger tight only, with a maximum of 0.565 N•m (5 in•lb).
• Maintain a minimum bend radius of 25.4 mm (1.0 in) for the cable.
• For optimal performance, use the probe with a 5.0 meter Proximitor Sensor.

Compatibility

This probe is part of the Bently Nevada 3300 XL series and is compatible with 3300 XL Proximitor Sensors (5.0 meter version). It can be used with Bently Nevada 3500 monitoring systems and other compatible condition monitoring platforms. The miniature coaxial ClickLoc connector ensures a secure connection with matching extension cables.

Maintenance Advice

Regularly inspect the probe cable and connector for damage or wear. Keep the probe tip clean and free of contaminants. Avoid exposing the probe to temperatures below -34°C (-30°F) as this may cause premature failure of the pressure seal. Periodically verify probe resistance (7.2 ± 0.8 ohms) to ensure proper operation.

Procurement Advice

When ordering the Bently Nevada 330709-000-080-50-11-05, confirm the total length (5.0 meters) and connector type (ClickLoc) to match your existing system. Ensure you have the correct Proximitor Sensor (5.0 meter) for compatibility. For critical applications, consider keeping a spare probe in inventory to minimize downtime.

FAQ

1. What is the difference between this probe and a 1-meter or 9-meter probe?

The total length determines the compatible Proximitor Sensor. This 5.0 meter probe is designed specifically for use with the 5.0 meter Proximitor Sensor. Using a different length probe with a mismatched Proximitor can cause measurement errors.

2. Can this probe be used in hazardous areas?

Yes, the 330709-000-080-50-11-05 has multiple agency approvals (option 05). It is rated for various temperature classifications (T1 to T5) depending on ambient temperature, as detailed in the temperature schedule.

3. What is the recommended torque for installation?

The recommended torque for the M16x1.5 probe case is 21.1 N•m (187 in•lb). Do not exceed the maximum rated torque of 63.3 N•m (560 in•lb) to avoid damage.

4. What is the minimum target size for accurate measurement?

For flat surfaces, the recommended minimum target diameter is 30.5 mm (1.2 in). For shaft measurements, the minimum shaft diameter is 152 mm (6.0 in). Using smaller targets may affect linearity.

5. How do I verify the probe is functioning correctly?

Measure the DC resistance between the center conductor and outer conductor. It should be 7.2 ± 0.8 ohms. Also, check the cable for continuity and inspect the connector for damage.