Bently Nevada 3500/25 126398-01F Keyphasor Module
Bently Nevada 3500/25 126398-01F Keyphasor Module
Manufacturer: Bently Nevada
Product No.: 126398-01F
Condition:1000 in stock
Product Type: Keyphasor Modules
Product Origin: 00126398-01F
Payment: T/T, Western Union
Weight: 200g
Shipping port: Xiamen
Warranty: 12 months
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Bently Nevada 3500/25 Enhanced Keyphasor Module
The Bently Nevada 3500/25 126398-01F is an enhanced Keyphasor module designed for the 3500 rack-based monitoring system. This critical component provides once-per-revolution timing signals essential for vibration phase analysis, orbit plots, and rotor speed measurement in turbomachinery applications.
Key Features
- ✅ Enhanced Functionality – Advanced signal processing for improved accuracy
- ✅ Dual Input Channels – Monitor two Keyphasor probes simultaneously
- ✅ Speed Measurement – Accurate RPM calculation from 60 to 250,000 RPM
- ✅ Phase Reference – Provides timing marks for vibration vector analysis
- ✅ Hot-Swappable – Replace module without system shutdown in redundant configurations
- ✅ API 670 Compliant – Meets machinery protection system standards
Technical Specifications
| Part Number | 126398-01F |
| Module Type | 3500/25 Enhanced Keyphasor Module |
| Input Channels | 2 independent Keyphasor inputs |
| Speed Range | 60 to 250,000 RPM |
| Input Type | Proximity probe or optical sensor |
| Output | Digital timing pulse, RPM value |
| Power Supply | Powered via 3500 rack backplane |
| Operating Temp | -30°C to +65°C |
| Mounting | 3500 rack slot (any available position) |
| Certifications | API 670, CE, UL, CSA |
| Dimensions | Standard 3500 series module (single slot) |
| Weight | Approx. 200g |
Industrial Applications
Turbomachinery Monitoring
Provide phase reference for vibration analysis in steam turbines, gas turbines, and centrifugal compressors. Enable orbit plots and vector analysis for precise fault diagnosis.
Rotor Speed Measurement
Accurately measure shaft speed in variable-speed equipment. Detect overspeed conditions and provide speed feedback for control systems.
Vibration Phase Analysis
Determine vibration phase angle relative to shaft position. Essential for balancing operations and identifying unbalance, misalignment, and looseness.
Startup & Shutdown Monitoring
Track rotor behavior during critical speed transitions. Identify resonance frequencies and ensure safe passage through critical speeds.
System Integration
Compatible Components
- Keyphasor Probes: 330500-02-00, 330525-01-00 (proximity or optical)
- 3500 Rack: 3500/15, 3500/22M (power supply and rack chassis)
- Monitor Modules: 3500/40M, 3500/42M (vibration monitors requiring phase reference)
- Software: System 1, ADAPT for data analysis and trending
Typical Configuration
In a standard 3500 rack system:
- Install one 3500/25 module per machine train
- Connect Keyphasor probe(s) to module inputs
- Module provides timing reference to all vibration monitors in rack
- RPM data available via Modbus or proprietary protocols
Installation & Setup
Installation Steps
- Rack Slot Selection – Install in any available slot in 3500 rack (no specific position required)
- Keyphasor Probe Connection – Connect proximity probe or optical sensor to input terminals
- Configuration – Set number of events per revolution (typically 1 for single notch)
- Speed Scaling – Configure RPM calculation based on events per revolution
- Verification – Verify timing pulse and RPM reading during machine operation
Best Practices
- Use dedicated Keyphasor probe (do not share with vibration measurement)
- Install probe at stable shaft location (avoid areas with runout or scratches)
- Ensure clean, sharp timing mark on shaft (notch, keyway, or reflective tape)
- Verify signal quality using oscilloscope before final commissioning
What is a Keyphasor?
A Keyphasor is a once-per-revolution timing signal that provides a phase reference for vibration analysis:
- Timing Mark: Physical feature on shaft (notch, keyway, or reflective tape)
- Sensor: Proximity probe or optical sensor detects timing mark
- Output: Digital pulse generated once per shaft revolution
- Purpose: Enables phase-based diagnostics (orbit plots, vector analysis, balancing)
Why Keyphasor is Critical
Without Keyphasor reference, vibration data lacks phase information needed to:
- ❌ Distinguish between unbalance and misalignment
- ❌ Perform precision balancing operations
- ❌ Generate orbit plots showing shaft motion
- ❌ Identify direction of shaft precession (forward vs. reverse)
Troubleshooting
| Problem | Cause | Solution |
|---|---|---|
| No Keyphasor signal | Probe disconnected or damaged | Check probe wiring, verify gap setting |
| Erratic RPM reading | Multiple timing marks or runout | Verify single clean timing mark on shaft |
| Intermittent signal | Loose cable connection | Tighten connectors, check for corrosion |
| Incorrect RPM value | Wrong events-per-revolution setting | Reconfigure for actual number of timing marks |
Authenticity Guarantee
⚠️ Counterfeit Module Risks
Non-genuine Keyphasor modules can cause:
- ❌ Inaccurate phase measurements leading to incorrect diagnostics
- ❌ Missed timing pulses causing data gaps
- ❌ Incompatibility with 3500 rack firmware
- ❌ Voided system warranty and API 670 certification
✅ Industrial Control Hub Guarantee
- 🔒 100% Genuine Bently Nevada – Factory-sealed packaging
- 📜 Full Traceability – Serial numbers and certificates
- 🌍 Authorized Distributor – Verify at Baker Hughes partner portal
- 🛡️ 24-Month Warranty – Manufacturer warranty honored globally
- 📦 ESD Protection – Anti-static packaging prevents damage
Package Contents
- 1× Bently Nevada 3500/25 126398-01F Enhanced Keyphasor Module
- Installation guide and configuration manual
- Rack mounting hardware
Not Included: Keyphasor probe, extension cable, and 3500 rack must be ordered separately.
Technical Support
- 📧 Application Engineering – Email us for Keyphasor probe selection and placement guidance
- 📚 Documentation – Installation manuals, configuration guides, API 670 compliance docs
- 🔧 Commissioning Support – Remote assistance for setup and signal verification
- 🔄 30-Day Returns – Unused modules in original packaging
FAQ
Q: What is the difference between 3500/25 and 3500/25-01?
A: 3500/25 is standard Keyphasor module. 3500/25-01 (126398-01F) is enhanced version with improved signal processing.
Q: Can I use optical sensor instead of proximity probe?
A: Yes, module accepts both proximity probes and optical sensors. Configure input type accordingly.
Q: How many Keyphasor modules do I need?
A: Typically one module per machine train. Dual-input module can monitor two separate shafts.
Q: Can I hot-swap this module?
A: Yes, in redundant 3500 rack configurations. Standalone racks require shutdown for module replacement.
Product Description
Bently Nevada 3500/25 Enhanced Keyphasor Module
The Bently Nevada 3500/25 126398-01F is an enhanced Keyphasor module designed for the 3500 rack-based monitoring system. This critical component provides once-per-revolution timing signals essential for vibration phase analysis, orbit plots, and rotor speed measurement in turbomachinery applications.
Key Features
- ✅ Enhanced Functionality – Advanced signal processing for improved accuracy
- ✅ Dual Input Channels – Monitor two Keyphasor probes simultaneously
- ✅ Speed Measurement – Accurate RPM calculation from 60 to 250,000 RPM
- ✅ Phase Reference – Provides timing marks for vibration vector analysis
- ✅ Hot-Swappable – Replace module without system shutdown in redundant configurations
- ✅ API 670 Compliant – Meets machinery protection system standards
Technical Specifications
| Part Number | 126398-01F |
| Module Type | 3500/25 Enhanced Keyphasor Module |
| Input Channels | 2 independent Keyphasor inputs |
| Speed Range | 60 to 250,000 RPM |
| Input Type | Proximity probe or optical sensor |
| Output | Digital timing pulse, RPM value |
| Power Supply | Powered via 3500 rack backplane |
| Operating Temp | -30°C to +65°C |
| Mounting | 3500 rack slot (any available position) |
| Certifications | API 670, CE, UL, CSA |
| Dimensions | Standard 3500 series module (single slot) |
| Weight | Approx. 200g |
Industrial Applications
Turbomachinery Monitoring
Provide phase reference for vibration analysis in steam turbines, gas turbines, and centrifugal compressors. Enable orbit plots and vector analysis for precise fault diagnosis.
Rotor Speed Measurement
Accurately measure shaft speed in variable-speed equipment. Detect overspeed conditions and provide speed feedback for control systems.
Vibration Phase Analysis
Determine vibration phase angle relative to shaft position. Essential for balancing operations and identifying unbalance, misalignment, and looseness.
Startup & Shutdown Monitoring
Track rotor behavior during critical speed transitions. Identify resonance frequencies and ensure safe passage through critical speeds.
System Integration
Compatible Components
- Keyphasor Probes: 330500-02-00, 330525-01-00 (proximity or optical)
- 3500 Rack: 3500/15, 3500/22M (power supply and rack chassis)
- Monitor Modules: 3500/40M, 3500/42M (vibration monitors requiring phase reference)
- Software: System 1, ADAPT for data analysis and trending
Typical Configuration
In a standard 3500 rack system:
- Install one 3500/25 module per machine train
- Connect Keyphasor probe(s) to module inputs
- Module provides timing reference to all vibration monitors in rack
- RPM data available via Modbus or proprietary protocols
Installation & Setup
Installation Steps
- Rack Slot Selection – Install in any available slot in 3500 rack (no specific position required)
- Keyphasor Probe Connection – Connect proximity probe or optical sensor to input terminals
- Configuration – Set number of events per revolution (typically 1 for single notch)
- Speed Scaling – Configure RPM calculation based on events per revolution
- Verification – Verify timing pulse and RPM reading during machine operation
Best Practices
- Use dedicated Keyphasor probe (do not share with vibration measurement)
- Install probe at stable shaft location (avoid areas with runout or scratches)
- Ensure clean, sharp timing mark on shaft (notch, keyway, or reflective tape)
- Verify signal quality using oscilloscope before final commissioning
What is a Keyphasor?
A Keyphasor is a once-per-revolution timing signal that provides a phase reference for vibration analysis:
- Timing Mark: Physical feature on shaft (notch, keyway, or reflective tape)
- Sensor: Proximity probe or optical sensor detects timing mark
- Output: Digital pulse generated once per shaft revolution
- Purpose: Enables phase-based diagnostics (orbit plots, vector analysis, balancing)
Why Keyphasor is Critical
Without Keyphasor reference, vibration data lacks phase information needed to:
- ❌ Distinguish between unbalance and misalignment
- ❌ Perform precision balancing operations
- ❌ Generate orbit plots showing shaft motion
- ❌ Identify direction of shaft precession (forward vs. reverse)
Troubleshooting
| Problem | Cause | Solution |
|---|---|---|
| No Keyphasor signal | Probe disconnected or damaged | Check probe wiring, verify gap setting |
| Erratic RPM reading | Multiple timing marks or runout | Verify single clean timing mark on shaft |
| Intermittent signal | Loose cable connection | Tighten connectors, check for corrosion |
| Incorrect RPM value | Wrong events-per-revolution setting | Reconfigure for actual number of timing marks |
Authenticity Guarantee
⚠️ Counterfeit Module Risks
Non-genuine Keyphasor modules can cause:
- ❌ Inaccurate phase measurements leading to incorrect diagnostics
- ❌ Missed timing pulses causing data gaps
- ❌ Incompatibility with 3500 rack firmware
- ❌ Voided system warranty and API 670 certification
✅ Industrial Control Hub Guarantee
- 🔒 100% Genuine Bently Nevada – Factory-sealed packaging
- 📜 Full Traceability – Serial numbers and certificates
- 🌍 Authorized Distributor – Verify at Baker Hughes partner portal
- 🛡️ 24-Month Warranty – Manufacturer warranty honored globally
- 📦 ESD Protection – Anti-static packaging prevents damage
Package Contents
- 1× Bently Nevada 3500/25 126398-01F Enhanced Keyphasor Module
- Installation guide and configuration manual
- Rack mounting hardware
Not Included: Keyphasor probe, extension cable, and 3500 rack must be ordered separately.
Technical Support
- 📧 Application Engineering – Email us for Keyphasor probe selection and placement guidance
- 📚 Documentation – Installation manuals, configuration guides, API 670 compliance docs
- 🔧 Commissioning Support – Remote assistance for setup and signal verification
- 🔄 30-Day Returns – Unused modules in original packaging
FAQ
Q: What is the difference between 3500/25 and 3500/25-01?
A: 3500/25 is standard Keyphasor module. 3500/25-01 (126398-01F) is enhanced version with improved signal processing.
Q: Can I use optical sensor instead of proximity probe?
A: Yes, module accepts both proximity probes and optical sensors. Configure input type accordingly.
Q: How many Keyphasor modules do I need?
A: Typically one module per machine train. Dual-input module can monitor two separate shafts.
Q: Can I hot-swap this module?
A: Yes, in redundant 3500 rack configurations. Standalone racks require shutdown for module replacement.