Product Overview

• PN: 3300/20-12-01-03-00-00
• Brand: Bently Nevada (Baker Hughes)
• Series: 3300XL Proximitor System
• Type: Two Channel Proximitor Assembly

• Function: Core signal conversion unit of non-contact eddy current measurement system. It supplies high-frequency excitation power to paired proximity probes, demodulates the feedback signal corresponding to probe-target clearance, and outputs linear DC voltage signal proportional to gap distance to subsequent monitoring modules or display meters. Two independent channels support simultaneous signal processing for two measurement points, widely applied to legacy turbomachinery monitoring schemes.

• 
  

Suffix Definition

• 3300/20: Dual channel proximitor base model
• 12: Input compatible with standard 8mm 3300XL probes
• 01: Standard mounting form factor
• 03: Fixed output sensitivity specification
• 00: No intrinsic safety explosion-proof configuration

• 00: Standard factory general version

• 
  

Core Features

• Two fully isolated measurement channels with independent circuit design
• Built-in probe fault detection to identify line break and short circuit conditions
• Standard linear output strictly following 3300XL system sensitivity parameters
• DIN rail mounting structure for easy installation inside control cabinets
• Integrated terminal block wiring without extra adapter connectors
• Strong anti-interference circuit design to adapt to complex industrial electromagnetic environment

• Matches probe and extension cable within total allowable cable length range to guarantee measuring precision

• 
  

Technical Specifications

• Supported Probe: 330104 series 8mm standard proximity probes
• Sensitivity: 200 mV/mil (7.87 V/mm)
• Operating Power Supply: +24VDC
• Operating Temperature: -35℃ ~ +77℃
• HS Code: 85437090
• Certifications: CE

• Product Status: Discontinued by original manufacturer, new original sealed and fully tested refurbished units in stock

• 
  

Compatibility

• Matched Parts: 3300XL series proximity probes and supporting extension cables
• Backend Equipment: 3500/40M, 3500/42M monitoring modules, local indicator meters and PLC analog acquisition cards
• Applicable System: Early 3300 rack monitoring system and 3500 TSI protection system

• Applicable Equipment: Steam turbines, generators, compressors and large rotating auxiliary machinery

• 
  

Application

• Signal conversion for shaft radial vibration and thrust bearing axial displacement monitoring points
• On-site transformation of old monitoring systems replacing damaged proximitor units
• Auxiliary signal acquisition for DCS and PLC system condition monitoring points
• Spare part stocking and maintenance replacement for petrochemical and power plant legacy monitoring loops