Description
Bently Nevada 133819-02 | 3500/61 RTD/TC Temperature I/O Module
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Part Number | 133819-02 |
| Product Family | 3500 |
| Associated Module | 3500/61 |
| Product Type | RTD/TC Temperature I/O Module |
| I/O Type | RTD/TC non-isolated |
| Number of Channels | 6 |
| Input Types | RTD and thermocouple |
| Input Configuration | RTD, TC, or mixed RTD/TC |
| Termination Type | Internal |
| Channel Isolation | Non-isolated |
| Temperature Monitoring | 6 channels |
| Recorder Outputs | Six, through 3500/61 |
| Configuration | 3500 Rack Configuration Software |
| TMR Application | Three adjacent temperature-monitor modules |
| Dimensions | Approx. 9.50 × 0.96 × 3.90 in. |
| Weight | Approx. 0.45 kg / 1.0 lb |
The 133819-02 designation specifically corresponds to the 3500/61 RTD/TC non-isolated I/O module with internal terminations. Other 3500/61 I/O variants use external terminations, isolated thermocouple inputs, or internal barriers, so those versions should not be treated as interchangeable without checking the rack configuration.
Product Introduction
The Bently Nevada 133819-02 is the field-interface I/O module used with the 3500/61 Temperature Monitor. It provides six temperature input channels and accepts resistance temperature detector (RTD) and thermocouple signals. The non-isolated configuration can be programmed for RTD, TC, or a combination of both, making it suitable for machinery and process temperature monitoring within a 3500 protection rack.
The important distinction is that 133819-02 is an I/O module, not the complete 3500/61 monitoring module. The 3500/61 provides the temperature-monitoring function and recorder outputs, while the 133819-02 provides the corresponding field termination and input interface. This distinction matters when diagnosing a temperature channel that has stopped reading correctly.
133819-02
Application Scenarios & Field Pitfalls — Engineer’s Perspective
Engineering Pain Point
Temperature faults in a machinery protection rack are not necessarily caused by the RTD or thermocouple itself. A bad field connection, incorrect sensor configuration, damaged termination, or failed I/O module can all produce abnormal temperature readings.
With 133819-02, troubleshooting should begin by separating the sensor and wiring problem from the 3500/61 I/O and monitoring electronics.
Typical Applications
- Turbine bearing and casing temperature monitoring
- Compressor and pump temperature monitoring
- Generator and rotating-machine temperature measurement
- Industrial machinery protection systems using Bently Nevada 3500 racks
Technical Pitfalls to Avoid
- Do not confuse 133819-02 with the 3500/61 monitor itself.
The 133819-02 is the RTD/TC I/O module. The 3500/61 is the associated temperature monitor and provides the six-channel monitoring function and recorder outputs. - Verify internal versus external termination.
133819-02 = internal terminations. The related 133827-02 uses external terminations, so substituting it without checking cabinet wiring can create a serious installation mismatch. - Do not assume channel isolation.
This is specifically the non-isolated RTD/TC version. The 3500/61 family also includes isolated thermocouple variants with different electrical characteristics. - Check the sensor configuration in the rack software.
The module can be configured for RTD, thermocouple, or a mixture of the two. The replacement must match the installed sensor types and the configuration stored in the 3500 Rack Configuration Software. - Check TMR arrangement when applicable.
Bently Nevada documentation states that temperature monitors used in TMR applications are installed adjacent to one another in groups of three. Do not assume a single replacement module can be installed in an arbitrary rack position when maintaining an existing TMR configuration.
Related Products
- Bently Nevada 3500/61 — Six-channel temperature monitor associated with the 133819-02 I/O module; provides recorder outputs for the six monitored channels.
- Bently Nevada 3500/60 — Related six-channel temperature monitor without the 3500/61 recorder-output function.
- Bently Nevada 133827-02 — 3500/61 RTD/TC non-isolated I/O module with external terminations.
- Bently Nevada 133835-02 — 3500/61 thermocouple isolated I/O module with internal terminations.
- Bently Nevada 133843-02 — 3500/61 thermocouple isolated I/O module with external terminations.
- Bently Nevada 136711-02 — 3500/61 RTD/TC I/O module with internal barriers and internal terminations.
- Bently Nevada 133892-01 — 3500/61 recorder-output external termination block using terminal-strip connectors.
- Bently Nevada 133900-01 — 3500/61 recorder-output external termination block using Euro-style connectors.
The related part numbers are important because the termination arrangement and isolation option are part of the functional specification, not merely mechanical variations.
Procurement Check
Before approving a Bently Nevada 133819-02 replacement, verify:
- Exact part number: 133819-02
- Associated monitor: 3500/61
- RTD/TC non-isolated configuration
- Internal termination arrangement
- Six-channel temperature architecture
- RTD versus thermocouple sensor configuration
- Existing field wiring and terminal assignments
- 3500 Rack Configuration Software settings
- Rack slot and TMR arrangement, if applicable
- Module revision and physical connector condition
- Existing recorder-output wiring associated with the 3500/61
Recommended procurement description:
Bently Nevada 133819-02, 3500/61 RTD/TC Non-Isolated I/O Module with Internal Terminations, Six-Channel Temperature Input Interface for Bently Nevada 3500 Machinery Protection Systems.
The key identification is straightforward: 133819-02 is the 3500/61 RTD/TC non-isolated I/O module with internal terminations. For replacement work, do not substitute another 3500/61 I/O variant solely because it has the same six-channel temperature function; termination type and isolation configuration must match the existing installation.
