Bently 3500/34

Description

Parameter Specifications

1. Power Supply
   The Bently 3500/34 operates on a dual – redundant 24V DC power supply. This redundancy feature ensures continuous and reliable operation, even if one power source malfunctions. The power consumption is relatively low, around 15 – 20W, which is energy – efficient for long – term industrial use.
2. Input Channels
   It is equipped with 8 input channels. These channels are specifically designed to interface with a variety of sensors commonly used in machinery condition monitoring. For instance, it can connect to proximity probes for measuring shaft displacement, accelerometers for vibration measurement, and temperature sensors. The input channels can accept a wide range of signal amplitudes and frequencies, ensuring compatibility with different sensor types.
3. Measurement Capabilities
   • Vibration Measurement: It can accurately measure vibration amplitudes from a few micrometers to several millimeters. The frequency response is quite broad, typically up to 10 kHz, which enables it to detect both low – frequency and high – frequency vibrations associated with different types of machinery faults.
   • Displacement Measurement: For shaft displacement measurement, it offers high precision, capable of detecting changes in the order of micrometers. This is crucial for monitoring the alignment and position of rotating shafts.
4. Communication Interface
   The Bently 3500/34 supports multiple communication interfaces. It has an Ethernet interface for high – speed data transfer, allowing for remote monitoring and data analysis. Additionally, it supports the Modbus TCP/RTU protocol, facilitating 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 3500/34 is used to monitor the health of rotating machinery, including pumps, compressors, and turbines. By continuously monitoring 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 applied 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 like centrifugal pumps and agitators. Real – time monitoring of these critical assets helps in maintaining production continuity and preventing safety hazards.

Weight and Dimensions

1. Weight
   The Bently 3500/34 weighs approximately 3.5 – 4.5 kg, which is relatively light considering its functionality and the robust construction required for industrial applications.
2. Dimensions
   It has a compact design with dimensions around 210mm (width) x 310mm (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 3500/34 provides 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 offers flexible configuration options. Users can customize the measurement parameters, alarm settings, and communication protocols according to specific application requirements.
3. Advanced Diagnostic Functions
   The device is equipped with advanced diagnostic functions, such as 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 3500/34 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 3500/34 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 3500/34 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 3500/34 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.