Bently Nevada 3500/25 149369-01: Enhanced Keyphasor Module for Machinery Monitoring

Product Description

The Bently Nevada 3500/25 149369-01 is a high – performance enhanced keyphasor module, playing a crucial role in the Bently Nevada 3500 Machinery Protection and Condition Monitoring System. As a half – height, two – channel module, its primary function is to supply keyphasor signals to the monitor modules within a 3500 rack. It accepts input signals from proximity probes or magnetic pickups. Once received, it converts these signals into digital keyphasor signals. These digital signals are then used to precisely indicate the moment when the keyphasor mark on a rotating shaft aligns with the keyphasor transducer. This information is fundamental for accurate machinery monitoring, especially in determining the rotational position and phase of shafts, which is vital for analyzing vibration patterns and diagnosing machinery faults.

Product Parameters

Parameter	Specification
Module Type	Enhanced Keyphasor Module for 3500 System
Input Signal Sources	Proximity Probes or Magnetic Pickups
Number of Input Channels	2
Output Signal Type	Digital Keyphasor Signals
Input Impedance	Compatible with standard proximity probes and magnetic pickups
Sampling Rate	High – speed sampling to accurately capture shaft rotations
Power Requirements	Operates within the power supply parameters of the 3500 system
Operating Temperature Range	– 40 °C to +85 °C
Storage Temperature Range	– 55 °C to + 125 °C

Product Specifications

Series

The 3500/25 149369-01 is an integral part of the Bently Nevada 3500 series. The 3500 series is globally recognized for its comprehensive and reliable machinery protection and condition monitoring solutions. It encompasses a wide range of modular components, including vibration monitors, communication gateways, power supplies, and various I/O modules. All components within this series are designed with a focus on seamless integration, scalability, and compliance with international industry standards. The 3500/25 enhanced keyphasor module, with its advanced functionality, enriches the 3500 series by providing a critical element for accurate shaft position and rotation monitoring, contributing to a more holistic view of machinery health.

Features

High – Precision Shaft Position Detection

By converting input signals from proximity probes or magnetic pickups into digital keyphasor signals, it can precisely determine the position of the keyphasor mark on the shaft. This high – precision detection is crucial for accurate vibration analysis, as it helps in identifying the phase of shaft vibrations, which can be used to diagnose issues such as unbalance, misalignment, and bearing problems.

Dual – Channel Design

The two – channel design allows for the monitoring of two keyphasor signals simultaneously. This can be particularly useful in complex machinery setups where multiple shafts or keyphasor references are required for accurate monitoring. For example, in multi – shaft industrial equipment, each channel can be dedicated to a different shaft, providing a more comprehensive view of the machinery’s rotational behavior.

Robust Signal Processing

The module is equipped with advanced signal – processing algorithms. These algorithms not only filter out noise and interference from the input signals but also enhance the quality of the keyphasor signals. This ensures that the output digital keyphasor signals are reliable and accurate, even in electrically noisy industrial environments.

Compatibility and Upgradability

It is fully backward – compatible with existing keyphasor modules in legacy systems, making it an ideal choice for system upgrades. This means that users can easily replace older keyphasor modules with the 3500/25 149369-01 without having to re – engineer their entire monitoring system. Additionally, it can work in harmony with other new modules in the 3500 series, providing enhanced functionality as the system evolves.

Built – in Diagnostics

The built – in diagnostic features continuously monitor the module’s performance. In case of any issues, such as a faulty input signal or a problem with the signal – processing circuitry, the module can generate diagnostic messages. These messages can be used by maintenance personnel to quickly identify and rectify the problem, reducing downtime and maintenance costs.

Function

The main function of the 3500/25 149369-01 is to act as a bridge between the physical sensors (proximity probes or magnetic pickups) and the 3500 system’s monitoring modules. When a rotating shaft with a keyphasor mark passes near the keyphasor transducer (either a proximity probe or magnetic pickup), the sensor generates an electrical signal. The 3500/25 module captures this analog signal, processes it to remove any noise or interference, and then converts it into a digital keyphasor signal. This digital signal is then transmitted to other monitor modules in the 3500 rack. These monitor modules use the keyphasor information to synchronize their measurements, analyze vibration patterns relative to the shaft’s position, and detect any abnormal behavior in the machinery’s rotation. For instance, in a steam turbine, the keyphasor signal can be used to determine the exact position of the turbine blades during each rotation, helping to detect any blade – related issues such as cracks or imbalances.

Use

In industrial settings, the 3500/25 149369-01 module is installed in a 3500 system rack. Proximity probes or magnetic pickups are strategically placed near the rotating shafts of the machinery to be monitored. These sensors are then connected to the input channels of the 3500/25 module. The module is configured using the Bently Nevada 3500 system software. Operators can set parameters such as the type of input sensor (proximity probe or magnetic pickup), the expected frequency range of the keyphasor signal, and any calibration factors. Once configured, the module starts collecting and processing the keyphasor signals. The processed signals are then used by other modules in the 3500 system for various purposes, such as vibration analysis, machinery protection, and performance optimization. Maintenance personnel can also use the diagnostic information provided by the module to perform preventive maintenance tasks, such as checking for sensor alignment or replacing faulty components.

Application Fields

Power Generation

Oil and Gas

Manufacturing

Mining

In summary, the Bently Nevada 3500/25 149369-01 enhanced keyphasor module is a sophisticated and reliable component for machinery monitoring. Its advanced features, compatibility, and wide range of applications make it an essential part of the 3500 system, enabling industries to protect their critical assets and optimize their operations.