Bently Nevada 3500/64M Dynamic Monitor

The Bently Nevada 3500/64M Dynamic Monitor is a single slot, four channel monitor that accepts input from high temperature pressure transducers and uses this input to drive alarms. The monitor's one measured variable per channel is band pass dynamic pressure.

The 3500 Rack Configuration Software configures the band pass corner frequencies along with an additional notch filter. The monitor provides a recorder output for control system applications. The primary purpose of the 3500/64M Dynamic Pressure Monitor is to provide the following:

• Machinery protection by continuously comparing monitored parameters against configured alarm setpoints to drive alarms
• Essential machine information for operations and maintenance personnel

Features

• Accepts from 1 to 4 pressure transducer signals
• Input impedance:
• 3 wire: transducer 10 kΩ
• 2 wire: 1.5 MΩ to 3.5 MΩ typical
• Dynamic pressure: 100 mV/psi (1.45 mV/mBar)
• Front panel LEDs: OK, TX/RX, Bypass
• High mode and low modes available

• Programmable alarm time delays

General Introduction

Technical Features7

• Input Capability：It can accept 1 to 4 pressure transducer signals. The input impedance is 10 kΩ for 3-wire transducers and typically 1.5 MΩ to 3.5 MΩ for 2-wire transducers.
• Sensitivity：The monitor has a sensitivity of 100 mV/psi (1.45 mV/mbar), enabling accurate detection and measurement of pressure changes.
• Configuration Flexibility：The 3500 rack configuration software allows for the configuration of band pass corner frequencies and an additional notch filter, providing customisable signal processing to meet specific monitoring needs.
• Output Indicators：The front panel is equipped with LEDs for OK, TX/RX, and bypass. The OK LED shows proper operation of the module, the TX/RX LED indicates communication status with other modules in the 3500 rack, and the bypass LED signals when the module is in bypass mode.

Functionalities

• Machinery Protection：By continuously comparing the monitored dynamic pressure parameters against user-programmable alarm setpoints, it can promptly trigger alarms when abnormal pressure conditions are detected. This helps prevent potential damage to the machinery and ensures the safety of the entire production process.
• Data Provision：It provides essential dynamic pressure information for operations and maintenance personnel. The recorder output can be used for control system applications, offering valuable data for analysis and decision-making to optimize equipment operation and maintenance.

Applications

• Power Generation：In power plants, it is used to monitor the dynamic pressure in turbines and other key equipment. By accurately measuring pressure fluctuations, it helps to ensure the stable operation of the power generation equipment and improve power generation efficiency.
• Oil and Gas：In the oil and gas industry, it is widely applied in oil wells, refineries and gas transmission pipelines. The 3500/64M can monitor the dynamic pressure of oil and gas to help optimize the extraction and transportation processes and prevent potential safety hazards.
• Chemical Industry：In chemical production facilities, it is used to monitor the pressure in reactors, distillation columns and other equipment. This ensures the safe and stable operation of chemical processes and helps to avoid accidents caused by abnormal pressure.