The 3500/65 Temperature Monitor provides 16 channels of temperature measurement and supports both Resistance Temperature Detectors (RTDs) and isolated-tip thermocouple (TC) inputs. The module conditions incoming temperature signals and continuously compares them against user-programmable alarm setpoints to support reliable machinery protection and condition monitoring.

Key Functional Characteristics

Input Types Supported:

Isolated-tip thermocouples (TC)

3-wire RTDs

4-wire RTDs

Mixed TC and RTD configurations within the same module

Channel Count:

16 independent temperature input channels

Signal Processing:

On-board signal conditioning

Continuous comparison against configurable alarm limits

Configuration Method:

Configured using 3500 Rack Configuration Software

Redundancy and Reliability

Supports Triple Modular Redundant (TMR) system configurations

In TMR applications:

Temperature monitors must be installed in groups of three adjacent modules

The system applies two types of voting logic to:

Ensure measurement accuracy

Eliminate single-point failures

Maintain high system availability in critical applications

Typical Applications

Bearing and winding temperature monitoring

Turbine, compressor, and motor protection

Process and auxiliary equipment temperature supervision

Power generation and oil & gas installations

BENTLY 172109-01 I/O Module