Bently 3500/20

Description

Parameter Specifications

1. Power Supply
   The Bently 3500/20 operates on a dual – redundant 24V DC power supply. This setup provides high reliability, as it can continue functioning even if one power source fails. The power consumption is approximately 12 – 18W, which is energy – efficient for continuous industrial operation.
2. Input Channels
   It comes with 16 input channels. These channels are designed to interface with different types of sensors used in machinery condition monitoring. Common sensors include proximity probes for shaft displacement measurement, velocity transducers for vibration measurement, and temperature sensors. The input channels can handle a wide range of signal levels and types, ensuring compatibility with a variety of sensor models.
3. Measurement Capabilities
   For vibration measurement, it can accurately measure vibration amplitudes from a few micrometers to several millimeters. It has a high – frequency response up to several kHz, enabling it to detect both low – and high – frequency vibrations. In terms of displacement measurement, it can detect shaft position changes with high precision, typically in the order of micrometers.
4. Communication Interface
   The Bently 3500/20 supports multiple communication interfaces. It has an Ethernet interface for high – speed data transfer and remote monitoring. It also supports the Modbus TCP/RTU protocol, allowing seamless integration with other industrial devices such as Programmable Logic Controllers (PLCs), Human – Machine Interfaces (HMIs), and Supervisory Control and Data Acquisition (SCADA) systems.

Uses

1. Industrial Machinery Monitoring
   In manufacturing plants, the Bently 3500/20 is used to monitor rotating machinery like pumps, compressors, and turbines. By continuously measuring vibration, displacement, and temperature, it can detect early signs of mechanical faults such as bearing wear, misalignment, and imbalance.
2. Power Generation
   In power plants, it is used to monitor generators and steam turbines. This helps in preventing unexpected breakdowns, reducing maintenance costs, and ensuring the stable and efficient generation of electricity.
3. Petrochemical Industry
   In petrochemical refineries, it monitors equipment such as centrifugal pumps and agitators. Real – time monitoring of these critical assets helps maintain production continuity and prevent safety hazards.

Weight and Dimensions

1. Weight
   The Bently 3500/20 weighs around 4 – 5 kg. Despite its relatively light weight, it has a robust construction suitable for industrial environments.
2. Dimensions
   It has a compact design with dimensions approximately 220mm (width) x 320mm (depth) x 130mm (height). This allows it to be easily installed in standard control cabinets or on equipment racks.

Characteristics

1. High – Precision Monitoring
   The Bently 3500/20 offers high – precision measurement of vibration, displacement, and temperature, with an accuracy of up to ±0.1% of the measured value. This ensures reliable and accurate assessment of machinery conditions.
2. Flexible Configuration
   It provides flexible configuration options. Users can customize measurement parameters, alarm settings, and communication protocols according to specific application requirements.
3. Advanced Diagnostic Functions
   The device is equipped with advanced diagnostic functions, including trend analysis and fault classification. These functions help operators quickly identify the root cause of problems and take appropriate corrective actions.

Stability and Reliability

1. Robust Design
   The Bently 3500/20 has a durable mechanical and electrical design. It can withstand harsh industrial environments, including high levels of vibration, dust, and temperature variations.
2. Redundancy and Self – Diagnosis
   The redundant power supply and built – in self – diagnosis functions enhance the device’s reliability. It can detect and report internal faults and continue normal operation in case of a single – point failure.
3. Long – Term Testing
   The Bently 3500/20 has undergone extensive long – term testing under various industrial conditions to ensure its stability and reliability over a long service life.

Actual Cases

1. Turbine Monitoring in a Power Plant
   In a large – scale power plant, the Bently 3500/20 was installed to monitor a steam turbine. It detected a gradual increase in vibration amplitude on one of the turbine’s bearings, indicating early – stage wear. Thanks to the early detection, the maintenance team was able to replace the bearing before a major breakdown occurred, minimizing downtime and saving significant repair costs.
2. Pump Monitoring in a Petrochemical Refinery
   In a petrochemical refinery, the Bently 3500/20 monitored a centrifugal pump. It detected an abnormal change in the pump’s vibration pattern, which was caused by a blocked impeller. The early warning allowed the operators to shut down the pump safely and clear the blockage, preventing damage to the pump and ensuring continuous production.