Description
Bently Nevada 3300/20-01-01-01-00-00
Technical Specifications:
- Probe Diameter: 11mm
- Linear Range: 4mm (160 mils)
- Sensitivity: 3.94 V/mm (100 mV/mil)
- Frequency Response: 0–8 kHz
- Power Supply: -23 VDC to -26 VDC (with guard), -24 VDC to -26 VDC (without guard)
- Maximum Current: 12 mA
- Output Impedance: 50 ohms
- Voltage Sensitivity: Less than 2 mV output change per 1V supply variation
- Operating Temperature: 0°C to +45°C (standard calibration conditions)
- Probe Thread Options: 1/2-20 UNF, 5/8-18 UNF, M14×1.5, M16×1.5
- Reverse Mount Thread: 3/8-24 UNF or M10×1
Functional Features:
- Extended linear range compared to 8mm system for larger displacement measurements
- Full interchangeability of all system components
- Designed to replace legacy 7200-series 11mm and 14mm transducer systems
- ClickLoc gold-plated connectors prevent connection loosening
- TipLoc molding provides robust probe tip-to-body bond
- CableLoc design withstands 330N (75 lb) pull force
- FluidLoc cable option available for oil-leak prevention
- Connector protector option for humid environments
- RFI/EMI immunity meets European CE standards
- SpringLoc terminal strips for fast, tool-free wiring
Application Scenarios:
- Axial (thrust) position measurement on turbines and compressors
- Ramp differential expansion measurement on steam turbines
- Rod position and rod drop measurement on reciprocating compressors
- Tachometer and zero speed measurement
- Keyphasor phase reference signal generation
- Applications where displacement exceeds 2mm and 8mm probe cannot cover full range
Performance Parameters:
- Measurement accuracy: ±5% of full scale
- Temperature stability: Maintains performance across operating range
- Dynamic range: 0–8 kHz frequency coverage
- Output linearity: Within ±5% over full linear range
Material Composition:
- Probe housing: Stainless steel construction
- Probe tip: High-performance polymer material
- Connector: Gold-plated brass ClickLoc connectors
- Cable: Shielded coaxial with optional FluidLoc and armor options
Structural Features:
- 11mm probe diameter for extended linear range
- Available in armored and unarmored configurations
- Multiple thread specifications for versatile mounting
- Standard locknut with predrilled safety wire holes
- Proximitor available in DIN-rail or panel mount options
Working Principle:
Identical eddy current principle as the 8mm system — the Proximitor drives high-frequency current through the 11mm probe coil, generating an electromagnetic field. The larger probe tip diameter creates a wider measurement field, resulting in a 4mm linear range. Eddy currents induced in the conductive target modify the coil impedance proportionally to gap distance, and the Proximitor converts this to a linear voltage output.
Installation Requirements:
- When upgrading from 7200-series system, all components must be replaced with 3300 XL 11mm components
- Monitoring system software must be updated to recognize 3300 XL 11mm transducer
- Set initial gap at midpoint of 4mm linear range
- Verify Proximitor output at calibrated gap position
- Use extension cable length matching Proximitor system designation
- Apply connector protectors in humid environments
Usage Notes:
- Do not mix 3300 XL 11mm components with 7200-series components
- Verify monitoring system software version compatibility before installation
- The 11mm system holds hazardous area installation certification
- Target material calibration is based on AISI 4140 steel
- Ensure adequate target surface diameter for the 11mm probe field
