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- Bently Nevada
- 3500/50 134938-01
- Tachometer Module
- USA
- 241.3 x 24.4 x 241.8 mm
- 0.82 kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
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Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The Bently Nevada 3500/50 (134938-01) is a high-performance Tachometer Module designed for precise rotational speed monitoring in industrial rotating machinery. As part of the Bently Nevada 3500 Series, this module delivers accurate real-time RPM measurement, ensuring effective machinery protection and enabling predictive maintenance strategies.
Built for continuous industrial operation, the 134938-01 provides stable and reliable speed monitoring for turbines, compressors, pumps, and other high-speed equipment.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Bently Nevada |
| Model | 3500/50 |
| Part Number | 134938-01 |
| Product Type | Tachometer Module |
| Function | Rotational speed (RPM) monitoring |
| Dimensions | 241.3 × 24.4 × 241.8 mm |
| Weight | 0.82 kg |
| Installation | Rack-mounted (3500 system rack) |
| Power Supply | Backplane-powered |
| Signal Input | Magnetic pickups, proximity probes, speed sensors |
| Signal Output | Conditioned tachometer signals to monitoring and protection systems |
| Application | Rotating machinery speed monitoring |
| Operating Environment | Industrial-grade, continuous operation |
Function and Working Principle
The 3500/50 (134938-01) module measures and processes rotational speed signals:
- Receives input from speed sensors such as magnetic pickups or proximity probes
- Amplifies and filters incoming signals for precise RPM calculation
- Converts raw signals into conditioned outputs for monitoring systems
- Provides real-time feedback for control and protection systems
- Detects overspeed or abnormal rotational behavior
This ensures accurate speed monitoring and enhances machinery protection.
Role in Industrial Control Systems
Within the Bently Nevada 3500 system, the 134938-01 module:
- Monitors rotational speed of critical machinery
- Provides early warning of overspeed or abnormal conditions
- Supplies accurate data to protection and control systems
- Integrates seamlessly with multiple sensor inputs
- Supports predictive maintenance and reduces downtime
It is a core component in industrial machinery protection systems.
Industrial Applications
The 3500/50 (134938-01) module is widely used in:
- Gas and steam turbine systems
- Industrial compressors and pumps
- Oil & gas and petrochemical facilities
- High-speed rotating equipment monitoring
- Continuous process industries requiring reliable RPM measurement
Its rugged design ensures stable performance in harsh environments.
Installation and System Integration
Installation considerations:
- Mounted in a Bently Nevada 3500 system rack
- Connected to magnetic pickups, proximity probes, or speed sensors
- Integrated with I/O modules and protection systems
- Powered via the rack backplane
- Requires calibration for accurate RPM monitoring
Proper installation ensures reliable performance and precise data acquisition.
Compatible System Components
This module works with:
- 3500/50 Tachometer I/O modules (e.g., 133442-01)
- Magnetic pickup sensors and proximity probes
- Preamplifier modules
- Communication and relay modules
- 3500 Series rack chassis and power supplies
These components form a complete speed monitoring and protection system.
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| 133388-02 | Tachometer Module | Standard RPM monitoring | General machinery |
| 133388-02 + 133442-01 | Tachometer + I/O | Integrated signal routing | Complex systems |
| 133442-01 | I/O Module | Signal interface module | Sensor integration |
| 3500/42M | Monitoring Module | Multi-parameter monitoring | Rotating equipment |
| 3500/45 | Position Monitor | Shaft position monitoring | Turbines and pumps |
Key Advantages
- Accurate real-time rotational speed monitoring
- Reliable signal amplification and processing
- Continuous operation in industrial environments
- Early detection of overspeed conditions
- Seamless integration with multiple sensors
- Supports predictive maintenance and machinery protection
- Compact rack-mounted design (0.82 kg)
- High reliability for critical machinery applications
Technical FAQs
What is the main function of the 134938-01 module?
It measures and monitors the rotational speed (RPM) of industrial machinery.
Which sensors are compatible?
Magnetic pickups, proximity probes, and other speed sensors.
Where is it installed?
Installed in a 3500 system rack as part of a complete monitoring system.
Does it support predictive maintenance?
Yes, it provides real-time RPM data to detect abnormal conditions early.
Conclusion
The Bently Nevada 3500/50 (134938-01) Tachometer Module is a reliable and high-precision solution for industrial speed monitoring. With accurate signal processing, robust construction, and seamless integration into the 3500 series system, it enhances machinery protection, operational safety, and predictive maintenance capabilities in demanding industrial environments.