Bently Nevada 3500/61 163179-02 Temperature Monitoring Module

Product Description

The 3500/61 163179-02 from Bently Nevada is a multi-channel temperature monitoring module engineered for integration within the 3500 Machinery Protection System. It is designed to acquire, process, and evaluate temperature signals from industrial sensors, providing reliable protection and condition monitoring for critical equipment.

With six independent input channels, this module supports both RTD and thermocouple sensors, allowing flexible deployment across a wide range of temperature measurement points. Compared to the 3500/60 variant, the 3500/61 includes dedicated analog (recorder) outputs for each channel, enabling external data logging and process trending.

Technical Specifications

• Model: 3500/61 163179-02

• Manufacturer: Bently Nevada (Baker Hughes)

• Product Type: Temperature Monitoring Module

• Channel Capacity:

• 6 independent temperature input channels

• Supported Sensor Types:

• Resistance Temperature Detectors (RTDs)

• Thermocouples (multiple TC types supported depending on configuration)

• Output Features:

• 6 × analog recorder outputs (one per channel)

• Input Characteristics:

• Input impedance: ~10 MΩ per lead

• High-accuracy signal conditioning for low-level sensor inputs

• I/O Module Options:

• Mixed RTD/TC (non-isolated version)

• Thermocouple-only isolated version

• Isolation (TC Version):

• Up to 250 Vdc channel-to-channel isolation

• Isolation grouping: channels arranged in sets of three

• Alarm & Protection Functions:

• User-configurable alarm thresholds

• Continuous comparison of measured values against setpoints

• Configuration Interface:

• Programmable via 3500 Rack Configuration Software

• Power & Integration:

• Rack-powered via 3500 system backplane

• Optimized for low power consumption

• Physical Characteristics:

• Weight: 0.73 kg

Functional Overview

The 3500/61 (163179-02) continuously monitors temperature inputs and converts them into conditioned signals suitable for system-level evaluation. Alarm logic is executed in real time, allowing early detection of abnormal thermal conditions that could indicate equipment faults.

Its built-in recorder outputs extend functionality beyond internal monitoring by enabling connection to external data acquisition systems, chart recorders, or DCS inputs. This makes it particularly suitable for applications requiring both protection and historical data analysis.

Application Areas

• Turbine and compressor temperature supervision

• Bearing and winding temperature monitoring

• Power generation systems (thermal monitoring of critical assets)

• Oil & gas processing equipment

• Industrial machinery requiring continuous thermal diagnostics

FAQ

Q: What is the main difference between 3500/60 and 3500/61?
A: The 3500/61 includes analog recorder outputs for each channel, while the 3500/60 does not provide this feature.

Q: Can RTD and thermocouple inputs be mixed?
A: Yes, with the non-isolated I/O module. The isolated version is designed for thermocouples only.

Q: Is electrical isolation necessary?
A: Isolation is recommended in environments with potential ground loops or electrical interference, particularly for thermocouple applications.

Q: How are alarms configured?
A: Alarm setpoints are defined using the 3500 Rack Configuration Software and can be tailored per channel.