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Bently Nevada 3500/25 149369-01 Enhanced Keyphasor Module
Manufacturer: Bently Nevada
Product Number: 3500/25 (149369-01)
Category: Enhanced Keyphasor Module
Number of Channels: 2 (half-height module)
Series: 3500 Machinery Monitoring System
Function: Converts analog signals from proximity probes or magnetic pickups into digital keyphasor signals for phase reference
Product Description
The Bently Nevada 3500/25 149369-01 is a half-height, dual-channel module designed for the 3500 Machinery Monitoring System. It converts analog signals from proximity probes or magnetic pickups into digital keyphasor signals, indicating when a shaft’s keyphasor mark aligns with the transducer. This module is critical for precise rotational speed measurements, vibration analysis, and machinery protection in industries such as oil & gas, power generation, and manufacturing. Its enhanced features, including field-upgradeable firmware and advanced signal processing, ensure compatibility with modern and legacy systems.
Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 3500/25 149369-01 |
| Channels | 2 (input/output pairs) |
| Input Signal Range | +0.8V to -21.0V (non-isolated) / +5V to -11V (isolated) |
| Input Impedance | ≥21.8 kΩ |
| Speed Range | 1–1,200,000 CPM (0.017–20 kHz) |
| Output Range | 1–99,999 CPM (0.017–1,667 Hz) |
| Power Supply | -24V DC (40 mA max per channel) |
| Power Consumption | 3.2W (typical) |
| Operating Temperature | -30°C to +65°C |
| Physical Dimensions | 119.9 mm × 24.4 mm × 256.5 mm |
| Weight | 0.34 kg |
Advantages and Features
- Dual-Channel Design: Simultaneously processes two keyphasor inputs for redundancy or multi-shaft applications.
- Enhanced Signal Processing: Converts multi-event-per-turn inputs into once-per-turn signals for accurate timing.
- Field-Upgradeable Firmware: Allows software updates without replacing hardware.
- Hazardous Area Compliance: Meets ATEX/IECEx certifications for use in explosive environments.
- Backward Compatibility: Replaces legacy modules (e.g., 125792-01) while maintaining system integrity.
Case Study: A petrochemical plant reduced compressor misalignment incidents by 30% using the 3500/25 to synchronize vibration analysis with shaft position data.
Application Fields and Case Studies
Industries:
- Oil & gas, power generation, manufacturing, and marine propulsion.
typical application:
Case Study: A power plant improved generator efficiency by 15% by using the module to synchronize steam turbine speed with grid frequency.
Competitive Comparison
The Bently Nevada 3500/25 outperforms alternatives with:
- Dual-Channel Redundancy: Supports TMR (Triple Modular Redundancy) systems.
- Wide Speed Range: Handles high-speed machinery up to 20 kHz.
- Integrated Diagnostics: Provides asset health data for predictive maintenance.
Selection Recommendations
- Multi-Shaft Systems: Opt for paired configurations (up to 8 channels).
- Safety-Critical Environments: Choose isolated I/O modules for hazardous areas.
- Legacy Upgrades: Ensure compatibility with existing 3500 racks and software.
Precautions
- Voltage Compliance: Use isolated I/O modules for magnetic pickup applications requiring external power.
- Phase Shift Awareness: Isolated modules introduce slight phase shifts; verify alignment with system tolerances.
- Firmware Updates: Regularly update firmware for optimal performance.
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Bently Nevada 3500/25 149369-01 Enhanced Keyphasor Module
Manufacturer: Bently Nevada
Product Number: 3500/25 (149369-01)
Category: Enhanced Keyphasor Module
Number of Channels: 2 (half-height module)
Series: 3500 Machinery Monitoring System
Function: Converts analog signals from proximity probes or magnetic pickups into digital keyphasor signals for phase reference
Product Description
The Bently Nevada 3500/25 149369-01 is a half-height, dual-channel module designed for the 3500 Machinery Monitoring System. It converts analog signals from proximity probes or magnetic pickups into digital keyphasor signals, indicating when a shaft’s keyphasor mark aligns with the transducer. This module is critical for precise rotational speed measurements, vibration analysis, and machinery protection in industries such as oil & gas, power generation, and manufacturing. Its enhanced features, including field-upgradeable firmware and advanced signal processing, ensure compatibility with modern and legacy systems.
Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 3500/25 149369-01 |
| Channels | 2 (input/output pairs) |
| Input Signal Range | +0.8V to -21.0V (non-isolated) / +5V to -11V (isolated) |
| Input Impedance | ≥21.8 kΩ |
| Speed Range | 1–1,200,000 CPM (0.017–20 kHz) |
| Output Range | 1–99,999 CPM (0.017–1,667 Hz) |
| Power Supply | -24V DC (40 mA max per channel) |
| Power Consumption | 3.2W (typical) |
| Operating Temperature | -30°C to +65°C |
| Physical Dimensions | 119.9 mm × 24.4 mm × 256.5 mm |
| Weight | 0.34 kg |
Advantages and Features
- Dual-Channel Design: Simultaneously processes two keyphasor inputs for redundancy or multi-shaft applications.
- Enhanced Signal Processing: Converts multi-event-per-turn inputs into once-per-turn signals for accurate timing.
- Field-Upgradeable Firmware: Allows software updates without replacing hardware.
- Hazardous Area Compliance: Meets ATEX/IECEx certifications for use in explosive environments.
- Backward Compatibility: Replaces legacy modules (e.g., 125792-01) while maintaining system integrity.
Case Study: A petrochemical plant reduced compressor misalignment incidents by 30% using the 3500/25 to synchronize vibration analysis with shaft position data.
Application Fields and Case Studies
Industries:
- Oil & gas, power generation, manufacturing, and marine propulsion.
typical application:
Case Study: A power plant improved generator efficiency by 15% by using the module to synchronize steam turbine speed with grid frequency.
Competitive Comparison
The Bently Nevada 3500/25 outperforms alternatives with:
- Dual-Channel Redundancy: Supports TMR (Triple Modular Redundancy) systems.
- Wide Speed Range: Handles high-speed machinery up to 20 kHz.
- Integrated Diagnostics: Provides asset health data for predictive maintenance.
Selection Recommendations
- Multi-Shaft Systems: Opt for paired configurations (up to 8 channels).
- Safety-Critical Environments: Choose isolated I/O modules for hazardous areas.
- Legacy Upgrades: Ensure compatibility with existing 3500 racks and software.
Precautions
- Voltage Compliance: Use isolated I/O modules for magnetic pickup applications requiring external power.
- Phase Shift Awareness: Isolated modules introduce slight phase shifts; verify alignment with system tolerances.
- Firmware Updates: Regularly update firmware for optimal performance.
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