The Bently Nevada 3500/65 is a single-slot, 16-channel temperature monitoring module for the 3500 Machinery Protection System. It is designed for continuous temperature monitoring and protection of critical machine components such as bearings, windings, and cylinder bodies in rotating machinery including turbines, compressors, and motors.
The module supports both RTD and thermocouple inputs, provides multi-level alarm protection, and supports Triple Modular Redundancy (TMR) configurations for high-reliability applications.

Key Features and Technical Characteristics

Multi-Sensor Compatibility
The 3500/65 supports mixed RTD and thermocouple inputs within a single module, allowing flexible configuration without the need for additional temperature modules. This enables adaptation to a wide range of temperature measurement requirements across different machine components.

Flexible Alarm Configuration
Using the 3500 Rack Configuration Software, users can configure multi-level alarm setpoints, including over-temperature and under-temperature (bidirectional) alarms, to match specific equipment protection and operating logic.

Redundancy and System Integration
The module supports TMR (Triple Modular Redundancy) architectures, utilizing a three-module voting mechanism to eliminate single points of failure and improve protection reliability for critical machinery.
Provides 4–20 mA analog outputs for integration with DCS and ESD systems, as well as dry-contact relay outputs for audible/visual alarms and shutdown functions. Supports System 1 software for remote monitoring, trend analysis, and diagnostics.

High Reliability and Maintainability
Features channel-to-channel electrical isolation for strong noise immunity and anti-interference performance. The hot-swappable design allows module replacement without interrupting system operation. Built-in sensor failure detection helps prevent false alarms and ensures accurate temperature monitoring.

Bently Nevada 3500/65｜16-Channel Temperature Monitor｜