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- Bently Nevada 133434-01 3500/50 Tachometer I/O Module External Terminations
SKU: 133434-01
Bently Nevada 133434-01 3500/50 Tachometer I/O Module External Terminations
The Bently Nevada 133434-01 is a 2-channel Tachometer I/O Module with external terminations for the 3500/50 system. It accepts signals from proximity probes or magnetic pickups, providing reliable speed monitoring and acceleration data for critical machinery protection.
Technical Function and System Interface
The Bently Nevada 133434-01 serves as the specialized I/O interface for the 3500/50 and 3500/50M Tachometer Modules within the 3500 Machinery Protection System. This module is installed in the rear of the 3500 rack, where it receives high-frequency pulse signals from speed sensors and routes them to the main processing card. Because this specific version utilizes external terminations, it connects to a separate External Termination (ET) Block via a multi-conductor cable. Consequently, this architecture allows for more flexible cabinet wiring and simplifies maintenance by moving the physical field-wiring points away from the high-density rear of the rack.
Core Technical Specifications
- Brand:Â Bently NevadaÂ
- Model Number:Â 133434-01
- Module Type:Â Tachometer I/O Module with External Terminations
- Compatible Main Monitor:Â Bently Nevada 3500/50 or 3500/50M
- Channels:Â 2 independent speed/position channels
- Input Range:Â +10.0 V to -24.0 VÂ
- Input Compatibility:Â Proximity Probes or Magnetic Pickups (MPU)
- Frequency Support:Â 0.0167 Hz to 20 kHzÂ
- Operating Temperature: -30°C to +65°CÂ
- Weight:Â 0.20 kgÂ
- Rack Space:Â 1 full-height rear slot
Industrial Applications and Operational Benefits
Industrial operators utilize the 133434-01 module to facilitate high-accuracy speed monitoring and overspeed protection on critical rotating assets. The 3500/50 system provides real-time diagnostics that are essential for steam turbines, gas turbines, and large-scale centrifugal compressors. Furthermore, the module supports sophisticated monitoring modes including:
- Rotor Speed and Peak Speed tracking
- Zero-speed detection for safe machine turning/braking
- Rotor acceleration monitoring for startup safety
- Reverse rotation notification to prevent back-flow damage
- Conditioned Keyphasor signal output for system-wide phase reference
Installation and External Termination
Technicians mount the 133434-01 directly behind the tachometer monitor module in the 3500 chassis. Since this is the external termination (ET) version, the module features a dedicated D-sub or multi-pin connector rather than integrated screw terminals. This allows the user to link the module to an ET block (such as part number 133442-01) using a pre-fabricated cable. Moreover, this setup effectively separates the high-frequency signal inputs from DC power and relay wiring, which minimizes electromagnetic interference (EMI) and ensures a high-integrity pulse stream for accurate RPM calculations.
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Manufacture: | Bently Nevada | Condition: | Brand New | |
Range of Product: | 3300 series | Lead time: | In Stock | |
Weight: | 0.4kg | HS CODE: | 8537101190 | |
Dimension: | 2.5x11.2x24.2cm | MOQ: | 1 | |
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Bently Nevada 991-25-50-01-01 Thrust Transmitter
Technical Overview
The Bently Nevada 991-25-50-01-01 is a genuine industrial component designed for reliable operation in demanding environments. This high-quality product ensures optimal performance and long-term durability for your automation systems.
Engineered to meet strict industrial standards, it integrates seamlessly with Bently Nevada monitoring and control systems, providing accurate data collection and reliable operation for critical machinery protection applications.
Detailed Specifications
| Manufacturer | Bently Nevada |
| Part Number | 991-25-50-01-01 |
| Product Type | Industrial Component |
| Condition | Brand New |
| Warranty | 12 Months |
Applications
- Power generation turbines
- Oil & gas compressors
- Industrial rotating machinery
- Predictive maintenance systems
- Process automation
Operational Capabilities
This Bently Nevada component is designed for continuous operation in harsh industrial environments. It provides reliable signal transmission and monitoring capabilities essential for machinery protection systems in power generation, oil & gas, and manufacturing industries.
Technical FAQ
Q: Is this a genuine Bently Nevada product?
A: Yes, this is a 100% genuine Bently Nevada product with full manufacturer warranty.
Q: What is the warranty period?
A: All products come with a standard 12-month warranty.


























