Description
Product Overview
The Bently Nevada 3500/25M (126398-01) is an enhanced Keyphasor Module. It delivers precise phase reference signals. This is vital for machinery health monitoring. The module creates accurate once-per-turn pulses. It enables reliable vibration and speed measurement. It integrates into the trusted 3500 monitoring system. Protect your critical rotating equipment with this core component.
Key Features & Benefits
- High Accuracy: Provides phase reference within ±0.5 degrees.
- Multiple Inputs: Handles signals from up to 4 different probes.
- Wide Range: Operates from 0 to 10,000 Hz frequency.
- Rugged Build: Functions in extreme temperatures (-40°C to +70°C).
- Easy Setup: Mounts simply in standard 19-inch panel racks.
- Seamless Integration: Fully compatible with the 3500 series framework.
- Low Maintenance: Front-accessible design for easy service.
Complete Technical Specifications
Brand & Model Info
- Brand: Bently Nevada
- Model & Part #: 3500/25M 126398-01
- Type: Enhanced Keyphasor Module
Electrical & Input Data
- Supply Voltage: 24 VDC
- Input Channels: 4 channels for phase reference
Performance Metrics
- Frequency Response: 0 Hz to 10 kHz
- Phase Accuracy: Better than ±0.5°
- Sensitivity: Optimized for standard proximity probes.
- Linearity: High linearity across the full range.
- Signal Resolution: High-resolution timing output.
Environmental Ratings
- Operating Temperature: -40°C to +70°C (-40°F to +158°F)
- Environmental Tolerance: Built for harsh industrial conditions.
- Interference Immunity: Excellent resistance to electrical noise.
Physical Details
- Dimensions: 3.5″ W x 6.5″ H (8.89 cm x 16.51 cm)
- Weight: Approximately 1.5 lbs (0.68 kg)
- Mounting Style: Panel mount for 19-inch racks.
Installation Guide
Installation is straightforward. Slide the module into an open slot in your 3500 rack. Secure it with the provided screws. Connect the 24VDC power. Use recommended shielded cable for probe connections. Always follow the system framework manual.
Setup & Maintenance
Configuration uses the standard 3500 software. No field calibration is needed. Status LEDs give instant health information. The module can be replaced quickly without tools. This design minimizes machine downtime.
Compatibility Note
This module works seamlessly with the Bently Nevada 3500 monitoring system. It is designed for this specific framework. It interfaces directly with all system software.
Certification & Standards
The product meets rigorous industrial standards for safety and quality. It is designed for reliable operation in critical applications. Contact us for specific certification documents.
Package Contents
- One (1) Bently Nevada 3500/25M (126398-01) Keyphasor Module.
- One (1) set of installation and safety guides.
Warranty & Support
We offer a 12-month warranty from shipment date. It covers defects in materials and workmanship. Our expert team provides full technical support.
Shipping Methods
We ship worldwide using reliable express carriers. Options include FedEx, UPS, and DHL. Tracking information is provided after dispatch. We process in-stock orders fast.
Common Applications
- Gas and Steam Turbine Monitoring
- Compressor and Pump Vibration Analysis
- Large Motor and Gearbox Protection
- Turbo-generator Speed and Phase Measurement
- Provides essential data for machine balancing.
Diagnostic Features
The module performs continuous self-checks. It reports any faults to the main monitoring system. Front-panel LEDs show power and channel status. This allows for quick troubleshooting and supports predictive maintenance strategies.
Frequently Asked Questions
General Questions
What does this module do?
It generates a precise electronic pulse for each shaft rotation. This pulse is the reference for all vibration phase measurements.
How many machines can it monitor?
Its 4 channels can monitor up to four different shafts or gear teeth points.
Technical & Experience Questions
Is it good for slow-rolling machinery?
Yes. Its 0 Hz low-end range makes it perfect for startup and coast-down analysis.
What is the most common installation mistake?
Using poor-quality or unshielded cable for the probe input. This can cause signal noise. Always use the correct cable type.
The status LED is off. What should I check first?
First, verify the 24VDC power supply to the rack and module. Then check the module is fully seated in its slot.
Buying Guidance
How do I choose the right module?
The 126398-01 is the standard 4-channel keyphasor. Choose it if you need multiple phase references. For single-channel needs, a different model may fit. Confirm your rack compatibility before ordering.
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