Features:
- Non-Isolated Keyphasor Module Provides Direct Sensor Signal Acquisition.
- Built-In Terminal Block Simplifies Field Installation And Wiring.
- High Phase Accuracy Ensures Reliable Speed And Vibration Data.
The Bently Nevada 125800-01 Keyphasor I/O Module delivers robust performance for machinery monitoring applications. Its design accommodates multiple proximitors, providing precise phase and speed signals critical for rotor balancing and dynamic analysis. The module operates reliably in industrial environments, withstanding temperatures from 0°C to +65°C and high humidity up to 95% non-condensing.
With internal terminations, sensor cables connect directly to the module without additional terminal boxes, reducing installation time and minimizing potential connection errors. Each channel supplies -24 Vdc at up to 40 mA, supporting diverse sensor configurations while maintaining low overall power consumption of 3.2 Watts.
The 125800-01 is rack-compatible with one full-height rear slot and features input and output impedance specifications optimized for accuracy. Its stable signal processing and compact design make it ideal for continuous monitoring tasks, ensuring reliable data capture for maintenance and operational decision-making.
The 125800-01 Bently Nevada Keyphasor I/O Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 125800-01 Keyphasor I/O Module (Internal Terminations) Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Bently Nevada 125800-01 Keyphasor I/O Module Specs
General
- Manufacturer GE / Bently Nevada
- Model 125800-01
- Condition New Original ready stock
- Product Family 149369-01,135473-01,126648-01
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- API 670 Compliance: This module is designed in full compliance with the American Petroleum Institute (API) 670 standard, a globally recognized industry standard for machine protection systems, ensuring reliability in critical rotating machinery.
- Hazardous Area Certification: Certified by multiple international explosion-proof standards including ATEX, IECEx, and CSA/NRTL/C, allowing installation in Class I, Division 2, or Zone 2 hazardous explosive environments.
- Functional Safety Support: As part of the 3500/25 Enhanced Keyed Phase System, it supports SIL 1 to SIL 2 Safety Instrumented Systems (SIS), meeting plant functional safety integrity requirements.
- Electromagnetic Compatibility (EMC): Strictly compliant with EMC directives under the CE marking, possessing strong immunity to radio frequency interference and surge protection, ensuring signal integrity in complex substation or generator room environments.
- Extremely High Phase Accuracy: Due to its non-isolated design, the signal path eliminates electronic delays caused by isolation circuits, providing the purest phase reference and making it a core component for precise dynamic balancing analysis.
- Ultra-Wide Frequency Response: Supports pulse frequencies from 1 cpm to 1,200,000 cpm (20 kHz), enabling precise synchronization capture in both extremely low-speed turning gear operation and extremely high-speed turbomachinery.
- Simplified Wiring with Internal Terminations: The internal terminations design allows field sensor cables to connect directly to the I/O module on the back of the frame, reducing the need for external junction boxes and cable jumpers, significantly shortening installation time and reducing the risk of poor contact.
- Optimized for Proximity Probes: The circuitry is specifically calibrated for the negative voltage pulse signals generated by the proximitor, ensuring a stable trigger threshold and effectively filtering high-frequency noise in the signal.
- Critical Equipment Mechanical Protection: Primarily used for speed monitoring of Class A critical equipment such as steam turbines, centrifugal compressors, and large motors, providing a phase reference for vector analysis of shaft vibration and displacement.
- Mechanical Fault Diagnosis and Analysis: In applications requiring 1X and 2X spectrum analysis, orbit plotting, and Bode plot analysis, the 125800-01 is an indispensable phase reference source.
- High-Precision Dynamic Balancing Correction: Due to its extremely small phase offset, it is the preferred I/O module for technicians performing on-site rotor dynamic balancing correction.
- Standard Factory Configuration: In applications where signal sharing with external third-party systems is not required (no isolation needed) and the signal source is a standard eddy current sensor, it is the most versatile and cost-effective key phase interface solution for the 3500 system.