126648-01 Bently vibration monitoring system preamplifier

Description

126648-01 Bently vibration monitoring system preamplifier

Product Dimensions：

Detailed Description

The module is a critical component for obtaining precise timing information from a rotating shaft. It accepts input signals from proximity probes (Proximitors) or passive magnetic pickups. It then converts these signals into a digital Keyphasor signal (a once-per-turn or multiple-event-per-turn pulse) that the 3500 system uses for synchronization.

The “Isolated” feature is specifically designed for applications where the Keyphasor signal is routed in parallel to multiple devices, such as a separate control system, and requires electrical isolation to prevent ground loops or signal interference. The “External Terminations” indicate that the field wiring connections are made to a separate terminal strip rather than directly to the back of the I/O module.

🛠️ Product Parameters (Specifications)

✅ Product Advantages (Benefits)

• Precision Timing: Delivers the precise synchronization pulse (Keyphasor) necessary for accurate measurement of rotational speed, 1X vibration amplitude, and phase angle.

• Signal Isolation: The primary benefit is the isolated output, which prevents interference and ground loop issues when sharing the Keyphasor signal with non-Bently Nevada systems (like a PLC or DCS), ensuring signal integrity.

• System Compatibility: Fully compatible with the 3500 Machinery Protection System, allowing for configuration redundancy and integration with other 3500 monitoring modules.

• Versatility: Compatible with both proximity probes and magnetic pickups, offering flexibility based on the application and available transducers.

• Enhanced Functionality: As part of the Enhanced Keyphasor Module, it maintains backward compatibility while offering improved Keyphasor signal processing capabilities over older designs.

⚠️ Important Considerations (Precautions)

• Isolation Specific: This module is typically selected specifically when signal isolation is required. For standard Keyphasor applications without the need for isolation, a different I/O module may be used.

• Transducer Power: When used with Proximitors in an isolated configuration, an external power supply must be provided for the Proximitor (unlike some standard I/O modules that can internally power them).

• Function Focus: The isolated I/O module is often optimized primarily for shaft speed measurement rather than precision phase measurement due to the nature of the isolation circuitry. Always consult the product manual for exact limitations.

• System Requirement: It must be used in conjunction with the 3500/25 Enhanced Keyphasor Module installed in the 3500 rack.

🌍 Product Applications

The 126648-01 Isolated Keyphasor I/O Module is essential for the continuous online monitoring of critical rotating machinery in various industries.

• Turbomachinery: Gas and steam turbines, compressors, and pumps where precise speed and phase reference are needed for vibration analysis.

• Power Generation: Used in monitoring generator shafts to detect imbalances, misalignment, and other mechanical faults.

• Oil & Gas: Applied to pipeline compressors, pumps, and process equipment in refineries and petrochemical plants.

• General Machinery Monitoring: Any large, critical rotating equipment where speed (RPM) and vector parameters (1X amplitude/phase) are monitored as part of a comprehensive machinery protection and condition monitoring strategy.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Please make an inquiry for more models：