Bently Nevada 3500/61-05-CN 3500/61 Temperature Module with Recorder Outputs

Description

The 3500/61-05-CN is a full-height, six-channel instrumentation module designed to provide continuous temperature monitoring and precise proportional analog signaling within the 3500 Series Machinery Protection System. This specialized monitor accepts raw inputs from Resistance Temperature Detectors (RTD) and Thermocouples (TC), conditions the signals, and evaluates the data against user-programmable alert and danger alarm thresholds. Distinct from its companion module, this component provides independent +4 to +20 mA recorder outputs for each of its six channels, allowing seamless integration with external distributed control systems (DCS), strip chart recorders, or plant-wide data loggers. Operating within a standard 3500 rack frame, it supports field configuration via the 3500 Rack Configuration Software and accommodates non-isolated layouts with internal safety barriers to maintain loop integrity across diverse industrial machinery environments.

Features

• Six comprehensive temperature monitoring channels accepting mixed combinations of RTD and Thermocouple sensors.
• Dedicated +4 to +20 mA analog recorder outputs per channel, proportional to full-scale monitor values and completely unbothered by external short circuits.
• Integrated software-programmable Alert and Danger setpoints covering 0 to 100% of the active sensor scale.
• Configurable alarm time delays adjustable from 1 to 60 seconds to mitigate transient signal trips.
• Front-panel diagnostic LEDs providing instant status evaluation for Module OK, Bypass Mode, and active TX/RX communication bus traffic.
• Support for non-isolated I/O architectures featuring internal safety barriers to protect delicate processing loops.

Applications

• Continuous thermal tracking of industrial motor and generator stator windings.
• Radial and thrust bearing temperature monitoring on critical turbomachinery, pumps, and industrial compressors.
• Exhaust gas temperature logging for gas turbines and heavy processing machinery.
• Multi-channel temperature voting logic integration for automated machinery trip systems.

Technical Specifications

Connections/Interfaces

Installation Guidelines

• Main Card Insertion: Mount the primary monitor module into any available full-height slot positioned to the right of the Rack Interface Module.
• I/O Module Positioning: Install the matching RTD/TC non-isolated internal barrier I/O module into the corresponding full-height rear slot directly behind the main front monitor.
• Cable Strain Relief: Route external sensor leads separately from noisy high-voltage distribution lines to eliminate electromotive interference across non-isolated circuits.
• Configuration Verification: Prior to plant operation, define precise sensor curves (alpha values) and scaling attributes within the 3500 Configuration Software utility.

Compliance and Certifications

• EMC Directives: 2014/30/EU.
• EMC Standards: EN 61000-6-2 (Immunity for Industrial Environments), EN 61000-6-4 (Emissions for Industrial Environments), EN 55011 Class A.
• Electrical Safety: 2014/35/EU Low Voltage Directive; EN 61010-1.
• Hazardous Area Approvals (with Internal Barriers): CSA/NRTL/C Class I, Division 2, Groups A, B, C, and D (with IS Output for Division 1); Class I, Zone 2: AEx/Ex nA nC ic [ia Ga] IIC T4 Gc or AEx/Ex ec nC ic [ia Ga] IIC T4 Gc.
• ATEX/IECEx (with Internal Barriers): Ex II 3(1) G; Ex nA nC ic [ia Ga] IIC T4 Gc or Ex ec nC ic [ia Ga] IIC T4 Gc at Ta = -20 degC to +65 degC.
• Functional Safety: Designed to meet SIL 2 requirements.