Bently Nevada 330780 3300 Proximity Transducer System

The Bently Nevada 330780 3300 is a high‑performance eddy‑current proximity transducer system compatible with 3300 and 3500 machinery monitoring racks. The full set includes probe, extension cable and oscillator‑demodulator, designed for non‑contact measurement of shaft vibration, axial position and rotor clearance of large rotating machinery.

This sensor system outputs linear voltage signals reflecting tiny shaft displacement changes and maintains stable measurement in high‑temperature, oily and strong electromagnetic interference environments. It is widely used as replacement spare parts when old probes or cables fail, and frequently selected for monitoring system renovation and field retrofit projects in energy and petrochemical plants.

Main Specifications

• Brand: Bently Nevada; Model:330780 3300; Type:Eddy‑Current Proximity Transducer Assembly
• System composition:Probe, extension cable and built‑in oscillator‑demodulator
• Measurement principle:Non‑contact eddy‑current sensing for metal shaft displacement
• Signal output:Linear DC voltage, perfectly matched to Bently 3300 / 3500 monitor modules
• Function:Shaft radial vibration detection, thrust position monitoring, rotor gap and eccentricity measurement
• Feature:High linearity, excellent temperature stability, strong anti‑interference capability
• Operating Environment:Wide temperature range, suitable for turbine and compressor harsh field conditions
• Certifications:Industrial certification for turbomachinery online monitoring and protection applications

Core Functions

• Continuously collect radial vibration and axial displacement data of rotating shafts without physical contact.
• Convert mechanical clearance variation into standard analog voltage signals for rack monitoring modules.
• Work reliably in high‑temperature, oil mist and high‑vibration industrial site environments.
• Supply accurate displacement data to 3500 protection system for abnormal vibration alarm and interlock protection.
• Detect rotor eccentricity and thrust bearing wear to realize early mechanical fault warning.
• Complete matched sensor kit for overhaul, replacement and upgrade of original Bently monitoring systems.

Application Scenarios

• Shaft vibration and position sensing hardware for Bently Nevada 3300 and 3500 machinery protection racks.
• Critical spare sensors for steam turbine, gas turbine and centrifugal compressor monitoring cabinets.
• Retrofit and spare replacement for aging proximity probes and signal cables of legacy monitoring systems.
• Online condition monitoring of large rotating units in power stations, petrochemical and energy industries.
• Thrust position supervision and shaft vibration protection for heavy‑duty industrial rotating equipment.

• Global aftermarket spare supply for maintenance teams servicing Bently Nevada turbomachinery monitoring hardware.