Description
Product Introduction & Engineering Value
Temperature monitoring problems often appear long before a machine reaches an alarm condition. A loose thermocouple connection or drifting RTD input can produce misleading data that complicates troubleshooting. The Bently Nevada 133819-02 provides the field interface between temperature sensors and the 3500/61 Temperature Monitor, ensuring stable acquisition of critical process temperatures.
Designed for applications where bearing, winding, casing, or process temperatures directly affect equipment reliability, this module supports mixed RTD and thermocouple inputs while integrating into existing 3500 Series protection systems without requiring changes to monitoring logic.
Technical Specifications
Manufacturer: Bently Nevada
Part Number: 133819-02
Series: 3500/61
Module Type: RTD/TC Non-Isolated I/O Module
Termination Style: Internal Terminations
Compatible Monitor: 3500/61 Temperature Monitor (P/N 163179-02)
Supported Sensors: Resistance Temperature Detectors (RTDs) and Thermocouples (TCs)
Monitoring Capacity: Six independent temperature channels
Isolation: Non-isolated input configuration
Configuration Software: 3500 Rack Configuration Software
Typical Installation: Mounted directly behind the associated 3500/61 monitor module within the rack
Application: Continuous industrial temperature monitoring and machinery protection.
Field Application & The “Trench” Experience
A refinery maintenance team noticed occasional bearing temperature alarms on a large process air compressor. Multiple RTDs had already been replaced, yet one channel continued to drift several degrees during periods of heavy load.
During the scheduled turnaround, engineers isolated the issue to the existing 133819-02 I/O Module. After installing a replacement module, they verified all six input channels using calibrated RTD simulators before restarting the compressor. Temperature trends immediately stabilized, eliminating false maintenance alarms and restoring confidence in the machinery protection system.
Typical applications include:
- Steam turbine thrust bearing temperature monitoring
- Catalytic cracking unit compressor bearing protection
- Generator stator winding temperature monitoring
133819-02
133819-02
Transparency SOP: QA & Testing
Before shipment, every New Surplus or refurbished 133819-02 undergoes documented quality verification.
- ✔ Confirm part number, hardware revision, and manufacturer identification.
- ✔ Inspect PCB assemblies for contamination, corrosion, or damaged components.
- ✔ Verify connector integrity and internal termination interfaces.
- ✔ Perform continuity and electrical integrity testing.
- ✔ Verify compatibility with the 3500/61 platform.
- ✔ Package in anti-static materials with industrial-grade protective cushioning before shipment.
The Veteran’s Tech Trap Guide
⚠️ Don’t confuse the monitor with the I/O module.
The 133819-02 is only the I/O Module. It must be installed behind the 3500/61 Temperature Monitor (163179-02) and cannot operate independently.
⚠️ Verify your sensor type before commissioning.
The non-isolated version can accept RTDs, thermocouples, or a combination of both, but incorrect software configuration may result in inaccurate readings or nuisance alarms.
PRO TIP:
Always document terminal assignments before replacing an internally terminated module. Swapping two thermocouple channels can produce believable—but incorrect—temperature values that are difficult to diagnose during startup.
Dynamic FAQ
Q1. What is the primary function of the 133819-02?
It serves as the RTD/TC field interface for the 3500/61 Temperature Monitor, accepting temperature signals from RTDs and thermocouples and routing them to the monitoring system for processing and alarm evaluation.
Q2. How many temperature inputs does this module support?
The module supports six independent temperature monitoring channels, allowing connection of RTD, thermocouple, or mixed sensor configurations.
Q3. What is the difference between the 133819-02 and 133827-02?
The 133819-02 uses internal terminations, while the 133827-02 provides external terminations. The appropriate version depends on the rack wiring design and installation requirements.
Q4. Can this module be used in Triple Modular Redundant (TMR) systems?
Yes. The 3500/61 temperature monitoring platform supports TMR configurations when installed and configured according to Bently Nevada system requirements.
Q5. What distinguishes New Surplus from Refurbished inventory?
A New Surplus module has not been placed into industrial service, although it may originate from excess inventory. A Refurbished module has previously been used, then cleaned, inspected, electrically tested, and verified before resale.
Q6. Is warranty coverage available?
Yes. Warranty terms depend on inventory condition and supplier policy. New Surplus and professionally refurbished modules are typically supplied with documented inspection records and warranty coverage before shipment.
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