Description
Key Technical Specifications
- Model Number: 133819-02
- Manufacturer: Bently Nevada
- Product Type: RTD/TC Non-Isolated Input Module
- System Platform: 3500 Machinery Protection System
- Input Type: Resistance Temperature Detector (RTD) / Thermocouple (TC)
- Channel Configuration: Non-Isolated Multi-Channel Input
- Signal Conditioning: Direct RTD/TC Signal Processing
- Operating Temperature: -30°C to +65°C
- Mounting: 3500 Rack Slot Mounting
- API Standard: Compliant with API 670 Machinery Protection
Functional Role & Application Analysis
The Bently Nevada 133819-02 is a dedicated RTD/TC non-isolated input module designed for the 3500 Machinery Protection System. It is primarily used to solve the challenge of integrating critical temperature monitoring directly into the vibration protection rack. By accepting direct RTD and thermocouple inputs, the 133819-02 eliminates the need for separate temperature transmitters and external signal conditioners. This direct integration reduces system complexity, minimizes potential failure points, and ensures that temperature data is available to the 3500 system with minimal latency.
Typical use cases include:
- Bearing Temperature Monitoring: Directly connecting RTDs embedded in turbine and compressor bearings to provide real-time thermal protection alongside vibration data.
- Process Temperature Integration: Monitoring lube oil, seal gas, or coolant temperatures within the same 3500 rack that monitors shaft vibration.
- Legacy System Maintenance: Replacing failed or degraded temperature input modules in existing 3500 installations to restore complete machinery protection coverage.
Our Quality Standard & Testing Process
We understand that a failed temperature module in a 3500 system can compromise the entire machinery protection scheme. We do not ship unverified hardware. Every 133819-02 undergoes a strict, multi-stage validation protocol before it leaves our facility.
- Visual & Component Inspection: PCBs are inspected under magnification for cold solder joints, capacitor degradation, or connector pin damage common in aged electronics.
- Live System Test: The module is installed in a live 3500 test rack and commissioned to verify successful slot recognition and communication with the 3500 frame.
- Full-Function Diagnostics: We inject precision RTD resistance and thermocouple millivolt signals to validate input accuracy and alarm setpoint functionality.
- Warranty Backing: Only units passing all diagnostic tests are approved for shipment and backed by our full 12-month warranty.

Bently Nevada 133819-02
Compatibility & Migration Paths
To ensure this 133819-02 integrates without issues, you must verify these critical parameters. Module compatibility in the 3500 system is not just about the part number; it’s about the frame configuration and firmware.
- Firmware/Hardware Revisions: Confirm your 3500 rack firmware supports the 133819-02 module. Older frame revisions may require a firmware update to recognize this specific input module.
- Required Components: Verify that your 3500 rack has an available slot and that the keying mechanism matches the 133819-02 form factor. Incorrect keying will prevent module insertion.
- Replacement & Alternatives: This module is non-isolated. If your application requires galvanic isolation between temperature inputs and the 3500 backplane, you must specify the isolated variant of this module.
- Get Expert Help: Unsure about your 3500 frame compatibility or firmware requirements? Contact our technical team today for a free compatibility check.



