Bently Nevada 330709-000-070-50-02-00 3300 XL 11 mm Proximity Probe

Product Introduction

The Bently Nevada 330709-000-070-50-02-00 is a 3300 XL 11 mm proximity probe, part of the 3300 series. Manufactured in the U.S.A., this probe is designed for accurate measurement of shaft vibration and position in rotating machinery. The model number 330709-000-070-50-02-00 specifies a probe with M16 x 1.5 thread, no armor, 0 mm unthreaded length, 70 mm overall case length, 5.0 meter total length, miniature coaxial ClickLoc connector, and standard cable. This five-meter probe is specifically designed for use with the five-meter Proximitor sensor.

Technical Parameters

• Probe DC Resistance: 7.2 ± 0.8 ohms (from center conductor to outer conductor)
• 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 5.0 meters
• Probe Case Thread: M16 x 1.5, maximum thread engagement 24 mm
• Probe Case Torque: 63.3 N•m (560 in•lb) for M16x1.5
• Connector-to-connector torque: finger tight recommended, maximum 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)

Parameter Analysis

The 330709-000-070-50-02-00 probe length of 5.0 meters is optimized for use with the corresponding 5-meter Proximitor sensor, ensuring correct impedance matching and signal integrity. The probe’s DC resistance of 7.2 ± 0.8 ohms is a key specification for verifying cable and sensor health. The PPS tip and stainless steel case provide durability in harsh environments. The M16 x 1.5 thread allows secure mounting, and the specified torque values ensure proper installation without damage. The temperature range covers typical industrial applications, though exposure below -34°C may affect the pressure seal.

Application Scenarios

This proximity probe is widely used for vibration and position monitoring in rotating machinery such as turbines, compressors, pumps, and other critical equipment. It is suitable for measuring shaft vibration, axial position, and eccentricity in industrial plants, power generation, and oil & gas facilities. The 3300 XL system is a trusted solution for machinery protection and condition monitoring.

Installation Guide

Install the probe into a mounting hole with M16 x 1.5 thread. Ensure the unthreaded length (0 mm) and overall case length (70 mm) match the installation requirements. Tighten the probe case to 63.3 N•m (560 in•lb) for M16x1.5. Connect the miniature coaxial ClickLoc connector to the extension cable or Proximitor, tightening finger tight, with a maximum torque of 0.565 N•m (5 in•lb). Maintain a minimum bend radius of 25.4 mm for the cable. Verify the probe DC resistance between center and outer conductors is 7.2 ± 0.8 ohms.

Compatibility

This 330709-000-070-50-02-00 probe is designed for use with the 3300 XL system, specifically with the 5-meter Proximitor sensor. It is compatible with Bently Nevada 3300 series monitors and related components. The miniature coaxial ClickLoc connector ensures secure connection with compatible extension cables.

Maintenance Advice

Regularly inspect the probe tip and cable for damage or contamination. Clean the probe tip with a soft cloth if necessary. Check the connector torque periodically to ensure it remains finger tight. Avoid exposing the probe to temperatures below -34°C to prevent premature failure of the pressure seal. Verify probe resistance during routine maintenance to detect any cable or sensor degradation.

Procurement Advice

When ordering the Bently Nevada 330709-000-070-50-02-00, confirm the total length (5.0 meters) and connector type (miniature coaxial ClickLoc) match your system requirements. Ensure you have the corresponding 5-meter Proximitor sensor. For genuine parts and technical support, purchase from authorized distributors like TenBN. Verify the model number and specifications before ordering to avoid compatibility issues.

FAQ

What is the total length of this probe?

The total length is 5.0 meters (16.4 feet). This probe is designed for use with the five-meter Proximitor sensor.

What is the thread size?

The probe case thread is M16 x 1.5, with a maximum thread engagement of 24 mm.

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 may cause premature failure of the pressure seal.

What is the probe DC resistance?

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

Is this probe armored?

No, this model (330709-000-070-50-02-00) is without armor.