Bently Nevada 330709-000-080-90-12-05 3300 XL 11 mm Proximity Probe

Product Introduction

The Bently Nevada 330709-000-080-90-12-05 is a 3300 XL 11 mm proximity probe, designed for accurate measurement of shaft vibration and position in rotating machinery. This model 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 with a miniature coaxial ClickLoc connector and FluidLoc cable. It is manufactured in the U.S.A. and carries multiple agency approvals.

Technical Parameters

• Probe dc Resistance (RPROBE): 8.5 ± 1.1 ohms (for 9.0 m length)
• Recommended Minimum Target Size (flat surface): 30.5 mm (1.2 in) diameter
• Recommended Minimum Shaft Diameter: 152 mm (6.0 in)
• Probe Tip Material: Polyphenylene sulfide (PPS)
• Probe Case Material: AISI 304 stainless steel (SST)
• Probe Cable: 75 Ω triaxial, fluoroethylene propylene (FEP) insulated, total length 9 meters
• Probe Case Thread: M16 x 1.5
• Maximum Length of Thread Engagement: 24 mm
• Probe Case Torque (Recommended): 21.1 N•m (187 in•lb)
• Connector-to-connector torque: Finger tight (recommended), 0.565 N•m (5 in•lb) maximum
• Minimum Bend Radius: 25.4 mm (1.0 in)
• Operating and Storage Temperature: -52°C to +177°C (-62°F to +351°F)

Parameter Analysis

The 330709-000-080-90-12-05 is engineered for precision. The 11 mm probe size offers a linear measurement range suitable for most industrial applications. The 9.0-meter cable length provides flexibility in installation, while the FluidLoc cable ensures reliable signal transmission. The probe’s temperature range and material construction (PPS tip, SST case) ensure durability in harsh environments.

Application Scenarios

This proximity probe is ideal for monitoring vibration and axial position in critical rotating machinery, including turbines, compressors, pumps, and other industrial equipment. It is commonly used in conjunction with Bently Nevada 3500 monitoring systems for predictive maintenance and protection.

Installation Guide

Proper installation is crucial for accurate readings. Ensure the probe is mounted with the recommended torque (21.1 N•m for the case). The probe case thread is M16 x 1.5, and the maximum thread engagement is 24 mm. Maintain the minimum bend radius of 25.4 mm for the cable. Use the recommended connector torque (finger tight, max 0.565 N•m) to avoid damage.

Compatibility

The 330709-000-080-90-12-05 is part of the 3300 XL series and is compatible with Bently Nevada 3300 and 3500 monitoring systems. It works with standard extension cables and proximitors designed for 3300 XL 11 mm probes.

Maintenance Advice

Regularly inspect the probe tip and cable for damage. Keep the probe tip clean and free from debris. Avoid exposing the probe to temperatures below -34°C (-30°F) as this may cause premature failure of the pressure seal. Check connector tightness periodically.

Procurement Advice

When ordering, verify the model number 330709-000-080-90-12-05 to ensure it meets your specifications. Consider the total length (9.0 meters) and connector type (miniature coaxial ClickLoc) for your application. Ensure you purchase from an authorized channel like TenBN to guarantee authenticity and warranty.

FAQ

What is the operating temperature range?

The probe can operate and be stored in temperatures from -52°C to +177°C (-62°F to +351°F). However, exposure below -34°C (-30°F) may cause premature failure of the pressure seal.

What is the recommended torque for installation?

The recommended probe case torque is 21.1 N•m (187 in•lb). The connector-to-connector torque should be finger tight, with a maximum of 0.565 N•m (5 in•lb).

What is the probe’s dc resistance?

For the 9.0-meter length, the resistance from the center conductor to the outer conductor (RPROBE) is 8.5 ± 1.1 ohms.

Can this probe be used with 3500 monitoring systems?

Yes, the 330709-000-080-90-12-05 is compatible with Bently Nevada 3500 systems, as well as 3300 systems.

What is the minimum target size?

For flat surfaces, the recommended minimum target diameter is 30.5 mm (1.2 in). For shafts, the recommended minimum diameter is 152 mm (6.0 in).