Description
Bently Nevada 3500/25-01-01-00 125792-01
Technical Specifications:
- Module Type: Half-height, dual-channel Keyphasor module
- Input Signal: Proximity probes or magnetic pickups
- Input Voltage Range: -0.8 V to -21 V (negative polarity), or +5 V to +11 V (positive polarity)
- Output Signal: Two buffered output ports with maximum output impedance of 504 ohms
- Frequency Range: 0.017 to 19,999 rpm
- Power Supply Voltage: 24 V DC
- Power Consumption: 3.2 watts
- Operating Temperature: -30°C to +65°C
- Storage Temperature: -40°C to +85°C
- Humidity: Up to 95%
- Dimensions: 119.9 mm × 24.4 mm × 25.4 mm
- Weight: Approximately 0.45 kg
Functional Features:
- Dual-channel design supporting two independent signal inputs
- Converts proximity probe or magnetic pickup signals to digital Keyphasor signals
- System compatibility and expandability with other 3500 rack modules
- Advanced diagnostic and alarm functions monitoring input signal status
- High reliability and flexibility for harsh industrial environments
- Supports NAMUR standard relay functions
Application Scenarios:
- Rotating machinery speed measurement
- Vibration phase reference generation
- Shaft rotational monitoring
- Turbine and compressor condition monitoring
- Integration with vibration monitoring modules for complete protection systems
Performance Parameters:
- Input Impedance: 10 MΩ or 1 MΩ depending on configuration
- Frequency Range: 0.1 Hz to 100 kHz
- Output Impedance: 504 ohms maximum
- Signal Processing: Dedicated Keyphasor signal conditioning circuits
Material Composition:
- Housing: Industrial-grade metal enclosure
- Circuit Board: Multi-layer printed circuit board with precision signal processing components
- Connectors: Industrial-grade input/output terminals
Structural Characteristics:
- Half-height module design for efficient rack space utilization
- Front panel status LEDs
- Buffered output ports
- Modular plug-in design for easy maintenance
Working Principle: The module receives signals from rotating shaft reference marks via proximity probes or magnetic pickups. It conditions and digitizes these signals to generate precise Keyphasor pulses. These pulses mark each revolution of the rotating shaft, providing the time reference necessary for phase-based vibration analysis and accurate rotational speed measurement.
Installation Requirements:
- Install in any half-height slot of the 3500 rack
- Connect proximity probes or magnetic pickups to designated input terminals
- Ensure proper shielding and grounding of sensor cables
- Configure input sensitivity and threshold levels in system software
Use Precautions:
- This is the legacy version replaced by 149369-01
- Ensure input signal polarity matches module configuration
- Minimum shaft speed requirements apply for passive magnetic pickups
- Verify compatibility with existing rack configuration software
- Replacement with newer versions should consider system compatibility
