Product Overview

The Bently Nevada 3300/25 Dual Accelerometer Monitor is a specialized rack-mounted module engineered for the 3300 Series monitoring system. This unit provides two independent channels for the continuous measurement and analysis of casing vibration. By processing inputs from connected accelerometers, the module facilitates real-time monitoring of critical rotating machinery, including turbines, industrial compressors, pumps, and motors, ensuring operational integrity through precise alarm setpoint management.

Features

• Dual-channel architecture for independent casing vibration monitoring.
• Integrated signal processing for dynamic vibration signals.
• Proportional 4-20 mA outputs for integration with external control systems (DCS/PLC).
• Configurable relay outputs for Alert and Danger alarm conditions.
• Front-panel LED status indicators for OK, Bypass, Alert, and Danger states.
• Designed for integration within the standard 3300 Series rack environment.

Applications

This monitor is primarily utilized in industrial environments requiring rigorous casing vibration surveillance. Typical applications include the protection of high-speed rotating assets, condition monitoring of balance-of-plant machinery, and integration into safety-instrumented monitoring racks where reliable, continuous vibration data is essential for predictive maintenance and emergency shutdown logic.

Technical Specifications

Installation Guidelines

• Ensure the 3300 Series rack is de-energized before inserting or removing the monitor module to prevent electrical damage.
• Verify that all field wiring is properly shielded and grounded to minimize electromagnetic interference (EMI) impact on sensitive vibration signals.
• Use appropriate ESD protection when handling the module to prevent damage to internal circuitry.
• Confirm proper seating of the module within the rack backplane to ensure reliable communication and power connectivity.
• Route signal cables separately from high-voltage power lines to maintain signal integrity.

FAQ

What does the 3300/25-01-03-03-00-00-03-00 code signify? This specific order code identifies the module's configuration, including its dual-channel accelerometer input capability, standard agency approvals, and specific measurement range settings.

Does this module include intrinsic safety barriers? No, the '00' barrier option in this part number indicates that standard input configuration is used without internal intrinsic safety barriers.

What is the primary function of the relay outputs? The relays are designed to trigger Alert and Danger alarms based on programmed setpoints, facilitating automated protection sequences for the monitored machine.