Bently Nevada 330709-000-120-10-02-00 3300 XL 11 mm Proximity Probe

Product Introduction

The Bently Nevada 330709-000-120-10-02-00 is a 3300 XL 11 mm Proximity Probe, manufactured in the U.S.A. This precision sensor is designed for non-contact vibration and position measurement in critical rotating machinery. With its robust construction and advanced materials, it delivers accurate, repeatable data for predictive maintenance and machine protection.

Technical Parameters

• Model: 330709-000-120-10-02-00
• Thread: M16 x 1.5, without armor
• Unthreaded Length: 0 mm
• Overall Case Length: 120 mm
• Total Length: 1.0 meter (3.3 feet)
• Connector: Miniature coaxial ClickLoc, standard cable
• Agency Approval: Not required
• Probe DC Resistance: 5.9 ± 0.5 ohms (center to outer conductor)
• Target Size (flat surface): Recommended minimum 30.5 mm (1.2 in) diameter
• Shaft Diameter: Recommended minimum 152 mm (6.0 in)
• Probe Tip Material: Polyphenylene sulfide (PPS)
• Probe Case Material: AISI 304 stainless steel
• Cable: 75 Ω triaxial, FEP insulated
• Operating Temperature: -52°C to +177°C (-62°F to +351°F)
• Storage Temperature: -52°C to +105°C (-62°F to +221°F)
• Relative Humidity: 100% condensing, non-submersible (with protected connectors)
• Probe Case Torque: Recommended 21.1 N•m (187 in•lb), Maximum 63.3 N•m (560 in•lb)
• Connector Torque: Recommended finger tight, Maximum 0.565 N•m (5 in•lb)
• Minimum Bend Radius: 25.4 mm (1.0 in)

Parameter Analysis

The 330709-000-120-10-02-00 features a 1.0-meter total length, making it suitable for installations where the probe must be mounted close to the monitoring system. The M16 x 1.5 thread allows secure mounting in standard probe holders. The probe’s DC resistance of 5.9 ± 0.5 ohms ensures consistent performance with compatible extension cables and proximitors. The PPS tip provides excellent chemical resistance and durability, while the stainless steel case offers corrosion resistance in harsh environments.

Application Scenarios

This proximity probe is ideal for monitoring vibration and axial position in critical rotating machinery, including:

• Turbines (steam, gas, hydro)
• Compressors
• Pumps
• Electric motors
• Generators
• Other rotating equipment where shaft vibration and position are critical

It is commonly used in industries such as power generation, oil and gas, petrochemical, and manufacturing.

Installation Guide

Proper installation is essential for accurate measurements. Follow these guidelines:

• Mount the probe with the recommended torque of 21.1 N•m (187 in•lb) to avoid damage.
• Ensure the target surface is clean and has the recommended minimum diameter (30.5 mm flat, 152 mm shaft).
• Maintain a minimum bend radius of 25.4 mm for the cable to prevent damage.
• Connect the ClickLoc connector securely (finger tight, maximum 0.565 N•m).
• Verify the gap (distance between probe tip and target) within the linear range of the system.

Compatibility

This probe is part of the 3300 XL series and is compatible with Bently Nevada 3300/3500 monitoring systems when used with appropriate extension cables and proximitors. It is designed to work with 3300 XL 11 mm system components.

Maintenance Advice

Regularly inspect the probe and cable for damage. Keep the probe tip clean and free of debris. Avoid exposing the probe to temperatures below -34°C (-30°F) as this may cause premature failure of the pressure seal. Ensure connectors are protected from moisture and contamination.

Procurement Advice

When ordering, verify the model number 330709-000-120-10-02-00 to ensure it meets your specific requirements. Confirm total length, thread type, and connector options. For applications requiring agency approvals, select the appropriate option code. Contact TenBN for availability and lead times.

FAQ

What is the operating temperature range?

The probe can operate from -52°C to +177°C (-62°F to +351°F).

What is the recommended torque for installation?

Recommended torque is 21.1 N•m (187 in•lb). Maximum is 63.3 N•m (560 in•lb).

Can this probe be used with 3500 series monitors?

Yes, when used with compatible extension cables and proximitors, it is suitable for 3300/3500 systems.

What is the minimum target size?

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

Is the probe submersible?

No, it is non-submersible. Connectors must be protected from moisture.