Bently Nevada 330709-000-080-90-11-05 3300 XL 11 mm Proximity Probe

Product Introduction

The Bently Nevada 330709-000-080-90-11-05 is a 3300 XL 11 mm proximity probe designed for precise measurement of shaft vibration and position in industrial rotating machinery. Manufactured in the U.S.A., this probe features an M16 x 1.5 thread, a 0 mm unthreaded length, an 80 mm overall case length, and a 9.0-meter (29.5 feet) total length. It comes with a miniature coaxial ClickLoc connector with connector protector and FluidLoc cable, and carries multiple agency approvals. This model is part of the 3300 XL series, known for enhanced linear range and improved accuracy.

Technical Parameters

• Probe dc Resistance: 8.5 ± 1.1 ohms (from center conductor to outer conductor)
• Probe Tip Material: Polyphenylene sulfide (PPS)
• Probe Case Material: AISI 304 stainless steel
• Probe Cable: 75 Ω triaxial, FEP insulated, total length 9 meters
• Probe Case Thread: M16 x 1.5
• Maximum Thread Engagement: 24 mm
• Probe Case Torque (Recommended): 21.1 N•m (187 in•lb)
• Connector-to-Connector Torque: Finger tight (recommended), max 0.565 N•m (5 in•lb)
• Minimum Bend Radius: 25.4 mm (1.0 in)
• Operating and Storage Temperature: -52°C to +177°C (-62°F to +351°F)
• Temperature Classifications: T1 to T5 for EPL Ga/Gc; T280°C to T90°C for EPL Dc (as per temperature schedule)

Parameter Analysis

The 330709-000-080-90-11-05 probe offers a dc resistance of 8.5 ± 1.1 ohms, ensuring consistent performance with compatible extension cables and proximitors. The PPS tip provides durability and chemical resistance, while the 304 SST case ensures corrosion resistance in harsh environments. The 9-meter cable length allows flexible installation, and the ClickLoc connector ensures secure and reliable connection. The probe is designed for use with a recommended minimum target flat surface diameter of 30.5 mm and shaft diameter of 152 mm to avoid cross-talk limitations.

Application Scenarios

This proximity probe is ideal for monitoring vibration and axial position in critical rotating machinery such as turbines, compressors, pumps, and other industrial equipment. It is commonly used in applications requiring high reliability and accuracy, including steam turbines, gas turbines, centrifugal compressors, and large pumps. The probe’s robust design and multiple approvals make it suitable for use in hazardous areas.

Installation Guide

When installing the 330709-000-080-90-11-05, ensure the probe case thread (M16 x 1.5) engages properly with the mounting hole, with a maximum thread engagement of 24 mm. Tighten the probe case to the recommended torque of 21.1 N•m (187 in•lb). For the connector, tighten finger tight, and do not exceed 0.565 N•m (5 in•lb). Maintain a minimum bend radius of 25.4 mm for the cable to prevent damage. Ensure the target surface meets the recommended minimum diameter and shaft size to avoid cross-talk.

Compatibility

This probe is designed for use with Bently Nevada 3300 XL series monitoring systems, including compatible extension cables and proximitors. It is part of the 3300 XL 11 mm probe family, which is compatible with standard 3300 XL system components. Always verify system compatibility with your specific monitor and extension cable models.

Maintenance Advice

Regularly inspect the probe tip and cable for damage or wear. Keep the connector clean and properly tightened. Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature failure of the pressure seal. Periodically check the probe’s dc resistance to ensure it remains within specification. Follow the manufacturer’s guidelines for maintenance and calibration.

Procurement Advice

When ordering the Bently Nevada 330709-000-080-90-11-05, verify the part number to ensure it matches your requirements. Confirm the total length, connector type, and agency approvals. Purchase from authorized distributors to guarantee genuine parts and warranty support. Consider stocking spare probes for critical machinery to minimize downtime.

FAQ

What is the temperature range for this probe?

The operating and storage temperature range is -52°C to +177°C (-62°F to +351°F). However, exposing the probe to temperatures below -34°C (-30°F) may cause premature failure of the pressure seal.

What is the recommended torque for installation?

The recommended torque for the M16 x 1.5 probe case is 21.1 N•m (187 in•lb). For the connector, tighten finger tight, with a maximum torque of 0.565 N•m (5 in•lb).

Can this probe be used with other Bently Nevada systems?

This probe is designed for the 3300 XL series. It is compatible with 3300 XL extension cables and proximitors. For use with other systems, consult the manufacturer for compatibility.

What is the minimum target size?

The recommended minimum flat target surface diameter is 30.5 mm (1.2 in), and the recommended minimum shaft diameter is 152 mm (6.0 in) to avoid cross-talk.

What approvals does this probe have?

The model 330709-000-080-90-11-05 has multiple approvals (option 05), making it suitable for various hazardous area installations.