Description

Designed for continuous, high-density temperature monitoring, the 3500/65-01-00 module provides sixteen independent channels of thermocouple (TC) and resistance temperature detector (RTD) temperature inputs. Operating within the framework of the Bently Nevada 3500 Series Machinery Protection System, this monitor processes these sensor inputs and continuously compares the values against user-programmable alarm setpoints, ensuring early detection of thermal stress in rotating machinery.

The specific 3500/65-01-00 configuration is equipped with the RTD/Isolated Tip TC I/O module featuring internal terminations. This design eliminates the requirement for external terminal blocks, streamlining panel layout and field wiring. The system is highly configurable using the 3500 Rack Configuration Software, enabling engineering staff to program setpoints, sensor types, and bypass functions on a channel-by-channel basis.

Features

• Provides 16 independent channels of temperature processing in a single slot.
• Compatible with both RTD and isolated tip thermocouple inputs.
• Configurable alert and danger setpoints for each channel.
• Internal terminations (Option 01) simplify field connections and reduce external hardware requirements.
• Continuous self-test diagnostics monitor the integrity of the transducer, cabling, and internal circuitry.
• Supports machinery protection by providing alarm statuses to common relay modules or external control networks via communication gateways.

Applications

• Radial and thrust bearing temperature monitoring in large turbines, pumps, and compressors.
• Stator winding temperature supervision in generators and electric motors.
• Exhaust gas temperature monitoring in industrial gas turbines.
• Process temperature tracking in petrochemical and power generation facilities.

Technical Specifications

Connections and Interfaces

Field wiring is terminated directly on the rear of the I/O module via screw terminals. The internal termination layout maps dedicated terminal pairs for each of the 16 channels, ensuring low contact resistance and stable signals for RTD (typically 3-wire setups) and isolated tip thermocouples.

Installation Guidelines

• Ensure the 3500 rack power is turned off before installing or removing the monitor.
• Insert the main monitor module into a standard chassis slot from the front, and seat the corresponding I/O module directly behind it from the rear of the rack.
• Use shielded, twisted-pair cabling for all sensor inputs to prevent electromagnetic interference from distorting temperature measurements.
• Secure the retaining screws on both the front and rear modules to maintain proper backplane connection and system grounding.