Bently Nevada 3500/65 145988-02+172103-01 16-Channel Temperature Monitor

The Bently Nevada 3500/65 145988-02+172103-01 16-Channel Temperature Monitor is an advanced monitoring module designed for the GE/Bently Nevada 3500 Series Machinery Protection System. It specializes in precise and continuous temperature monitoring across 16 independent input channels, providing critical data for asset protection and process reliability.

This module is commonly deployed in high-value rotating equipment such as turbines, compressors, generators, and industrial pumps where thermal variations can indicate early signs of failure. The dual-part configuration, combining the 145988-02 monitor module with the 172103-01 I/O module, ensures robust signal acquisition, processing, and system integration.

By supporting a wide range of temperature sensors, including thermocouples and resistance temperature detectors (RTDs), the 3500/65 provides a highly versatile platform for monitoring thermal behavior, optimizing machinery protection, and extending equipment lifespan.

Product Specifications

Product Applications

The 3500/65 16-Channel Temperature Monitor is engineered for critical industrial applications where temperature deviations directly impact machinery safety and operational efficiency:

• Gas and Steam Turbines – Detecting overheating in bearings, seals, and casings.

• Compressors – Monitoring temperature variations in stages and bearings to prevent mechanical failures.

• Pumps and Motors – Ensuring operational safety by tracking winding and lubrication system temperatures.

• Generators – Protecting critical components from thermal stress.

• Petrochemical Plants – Maintaining safe operating conditions in high-temperature processes.

• Power Generation – Providing real-time monitoring for turbine-driven equipment.

Product Advantages

• High Channel Density – 16 input channels within one module maximize monitoring coverage without requiring additional hardware.

• Versatility – Compatible with both thermocouples and RTDs, supporting multiple sensor types in a single module.

• Precision Monitoring – High measurement accuracy and 16-bit resolution provide reliable data for predictive maintenance.

• Integrated Alarming – Programmable dual-level alarms (Alert and Danger) per channel for immediate protection response.

• Seamless Rack Integration – Fully compatible with the 3500 rack and communication protocols for system-wide data availability.

• Reliability in Harsh Environments – Designed to operate in industrial and power generation environments with high durability.

• Reduced Downtime – Early detection of abnormal temperature trends prevents catastrophic failures.

• Global Standard – Widely adopted across industries as part of Bently Nevada’s trusted machinery protection solutions.

FAQ

1. Which sensor types can be connected to the 3500/65 module?

   The module supports a wide range of thermocouples (J, K, T, B, R, S, E, N) and RTDs (Pt100, Cu10, Ni120, etc.).

2. How many channels can the module monitor simultaneously?

   It provides 16 independent input channels, each configurable for temperature measurement.

3. Does the module include cold junction compensation (CJC)?

   Yes, CJC is integrated to ensure accurate thermocouple readings.

4. Can the 3500/65 output data to external systems?

   Yes, data can be accessed via the 3500 rack communication bus and Modbus outputs.

5. What alarm features are available?

   Each channel supports two programmable alarms: Alert and Danger.

6. How is calibration handled in this monitor?

   Factory calibration ensures accuracy, and field verification can be performed using Bently Nevada tools.

7. Does the monitor support redundancy?

   Redundant configurations can be implemented by pairing modules within the 3500 rack.

8. What is the update rate of temperature readings?

   The module updates readings approximately once per second per channel.

9. Is linearization applied to thermocouple signals?

   Yes, built-in linearization ensures accurate readings across different thermocouple types.

10. Can alarms be linked to relays within the system?

    Yes, alarms are configurable to trigger rack-mounted relay outputs for protective actions.