Description

Product Overview

The Bently Nevada 330705-02-18-90-02-00 is a specialized 8mm proximity sensor designed for the 3300 XL Transducer System. This reverse mount configuration addresses specific mechanical installation constraints where traditional forward-mounting is impractical. It facilitates precise non-contact displacement and vibration monitoring by measuring the gap between the probe tip and a conductive target material. The unit serves as a critical component in Turbine Supervisory Instrumentation (TSI), providing high-fidelity data to monitoring systems for asset protection and machinery diagnostics.

Technical Specifications

• Manufacturer: Bently Nevada
• Model Identification: 330705-02-18-90-02-00
• Transducer System: 3300 XL 8 mm
• Mounting Configuration: Reverse Mount (Internal Threaded)
• Total Length: 1.8 meters
• Connector Type: Miniature Coaxial ClickLoc Connector
• Operating Temperature: -40°C to +177°C (-40°F to +351°F)
• Linear Range: 2.0 mm (80 mils)
• System HS Code: 8537101190
• Environmental Protection: Fluid and corrosion-resistant 300 series stainless steel housing

Part Number Configuration Analysis

The alphanumeric suffix for the 330705 series defines specific physical attributes required for various industrial housings:

• -02: 3/8-24 UNF thread type for standard imperial fittings.
• -18: Represents the total length of the probe assembly.
• -90: Indicates the specific cable length configuration (9.0 meters total system length when paired).
• -02: Specifies the miniature coaxial connector type with a silicon sleeve for moisture resistance.
• -00: Standard agency approvals for non-hazardous or general-purpose locations.

Engineering Advantages

The 330705 series utilizes a polyphenylene sulfide (PPS) tip molded onto a stainless steel body. This chemical bond ensures a high-pressure seal between the probe tip and the housing, preventing process fluid leakage through the sensor body. The reverse mount design allows technicians to replace or adjust the sensor from the exterior of a machine housing or bearing cap, significantly reducing downtime during maintenance intervals.

The probe is fully compatible with 3300 XL Proximitor Sensors and extension cables. It maintains a constant scale factor of 7.87 V/mm (200 mV/mil), providing a linear output that remains stable despite variations in temperature or humidity. This reliability makes it suitable for monitoring radial vibration, axial thrust position, and eccentricity in high-speed rotating machinery such as steam turbines, centrifugal compressors, and large induction motors.

WordPress Product Short Description

The Bently Nevada 330705-02-18-90-02-00 is a 3300 XL 8mm Reverse Mount Proximity Probe engineered for high-accuracy vibration and position monitoring. Featuring a 3/8-24 UNF thread and a 1.8-meter integrated cable, this sensor provides a stable 7.87 V/mm scale factor for critical rotating machinery protection.