Bently Nevada 330709-000-070-50-12-05 3300 XL 11 mm Proximity Probe

Product Introduction

The Bently Nevada 330709-000-070-50-12-05 is a 3300 XL 11 mm proximity probe, part of the 3300 series. It is designed for non-contact measurement of shaft vibration and position in rotating machinery. This model features an M16 x 1.5 thread, no armor, 0 mm unthreaded length, 70 mm overall case length, and a 5.0 meter (16.4 feet) total length. It is equipped with a miniature coaxial ClickLoc connector and FluidLoc cable, and carries multiple agency approvals. The probe is manufactured in the U.S.A.

Technical Parameters

• Probe Length: 5.0 meters (16.4 feet)
• 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
• Thread: M16 x 1.5
• Maximum Thread Engagement: 24 mm
• Operating Temperature: -52°C to +177°C (-62°F to +351°F)
• Recommended Torque: 21.1 N•m (187 in•lb)
• Maximum Torque: 63.3 N•m (560 in•lb)
• Minimum Bend Radius: 25.4 mm (1.0 in)

Parameter Analysis

The 330709-000-070-50-12-05 is a 5-meter probe, designed to be used with a 5-meter Proximitor sensor only. The DC resistance of 7.2 ± 0.8 ohms ensures proper signal transmission. The PPS tip provides durability and consistent performance. The stainless steel case offers corrosion resistance. The operating temperature range is broad, but note that exposing the probe to temperatures below -34°C (-30°F) may cause premature failure of the pressure seal. The probe is suitable for target diameters of at least 30.5 mm (1.2 in) for flat surfaces and shaft diameters of at least 152 mm (6.0 in) 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 oil, gas, power generation, and manufacturing industries to ensure safe and reliable operation.

Installation Guide

Install the probe with the recommended torque of 21.1 N•m (187 in•lb) and do not exceed 63.3 N•m (560 in•lb). The connector-to-connector torque should be finger tight, with a maximum of 0.565 N•m (5 in•lb). Ensure the cable bend radius is at least 25.4 mm (1.0 in). The probe thread is M16 x 1.5, and the maximum thread engagement is 24 mm. For proper operation, the probe must be used with the correct Proximitor sensor (5-meter type).

Compatibility

This probe is part of the 3300 XL series and is compatible with Bently Nevada 3300/3500 monitoring systems. It is designed to work with 5-meter Proximitor sensors. The miniature coaxial ClickLoc connector ensures secure connection.

Maintenance Advice

Regularly inspect the probe and cable for damage. Keep the probe tip clean and free of contaminants. Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent pressure seal failure. Check torque settings periodically to ensure proper installation.

Procurement Advice

When ordering the Bently Nevada 330709-000-070-50-12-05, verify the model number to ensure it matches your requirements. Confirm the total length (5.0 meters) and connector type. Ensure you have the compatible Proximitor sensor. For technical support or further details, consult the official service manual.

FAQ

What is the total length of this probe?

The total length is 5.0 meters (16.4 feet).

What is the probe DC resistance?

The resistance from center conductor to outer conductor is 7.2 ± 0.8 ohms.

What is the operating temperature range?

The operating and storage temperature range is -52°C to +177°C (-62°F to +351°F).

What is the recommended torque for installation?

The recommended torque is 21.1 N•m (187 in•lb), with a maximum of 63.3 N•m (560 in•lb).

Can this probe be used with any Proximitor?

No, this 5-meter probe is designed for use with the 5-meter Proximitor sensor only.