You are here:
- Home
- Product
- I/O Modules
- Bently Nevada 138708-01 3500/40M Proximity Input I/O Module
SKU: 138708-01
Bently Nevada 138708-01 3500/40M Proximity Input I/O Module
The Bently Nevada 138708-01 is a 4-channel Proximity Input I/O Module with internal terminations for the 3500/40M monitor. It provides a direct-wire interface for vibration and position probes, featuring a wide operating temperature range and full industrial safety certifications.
System Purpose and Technical Function
The Bently Nevada 138708-01 acts as the primary hardware interface for the 3500/40M Proximity Monitor within the 3500 Machinery Protection System. This I/O module resides in the rear of the rack, where it accepts raw signals from proximity probes and transmits them to the monitoring card for processing. Because it features internal terminations, this module allows engineers to connect field wiring directly to its screw terminals without needing external terminal blocks. Consequently, the 138708-01 streamlines the installation of radial vibration, axial position, and Keyphasor measurement loops while reducing overall cabinet wiring complexity.
Core Technical Specifications
- Brand:Â Bently Nevada
- Part Number:Â 138708-01
- Module Type:Â Proximity Input I/O with Internal Terminations
- Compatible Monitor:Â Bently Nevada 3500/40M
- Channel Support:Â 4-channel input configuration
- Termination Style:Â Integrated screw terminal blocks
- Operating Temperature: -40°C to +85°C
- Humidity:Â 95% non-condensing
- Hazardous Area Approvals:Â CSA, ATEX, and IECEx certified
- Mounting Location:Â Rear slot of the 3500 series chassis
Operational Features and Industrial Application
Maintenance teams specify the 138708-01 I/O module for critical machinery oversight in power plants, refineries, and chemical processing facilities. The module provides highly stable signal paths for eddy current sensors, ensuring that electromagnetic interference (EMI) does not compromise the vibration data. Furthermore, the internal termination design includes dedicated grounding points for cable shields, which effectively prevents ground loops and signal noise. This reliability makes it an essential component for monitoring:
- Radial shaft vibration in fluid-film bearings
- Axial thrust displacement in steam turbines
- Shaft eccentricity during startup and coast-down
- Speed and phase reference via Keyphasor sensors
Installation and System Maintenance
Technicians install the 138708-01 directly behind the 3500/40M monitor module to establish a secure backplane connection. During the maintenance phase, the module’s rugged construction supports frequent wiring adjustments if sensor configurations change. Moreover, the unit allows for “hot-swapping” under redundant power conditions, meaning operators can replace an I/O module without shutting down the entire machinery protection rack. This feature significantly minimizes unplanned downtime and ensures continuous monitoring of high-value rotating assets.
You may also like
The Bently Nevada 3500/93 135785-02 is a high-visibility backlit display unit designed for the 3500 series monitoring system. It provides local access to real-time machinery data, alarm statuses, and system diagnostics in a rugged, industrial-grade package.
Bently Nevada 106M2686-01 3500 Series Relay I/O Module
The Bently Nevada 106M2686-01 is a specialized relay I/O module for the 3500 Series Monitoring System. It provides reliable, programmable relay outputs to drive machinery shutdown sequences and alarm notifications, ensuring high-integrity protection for critical industrial rotating assets.
Bently Nevada 3500/44-02-00 126623-01 Aero GT I/O Module
The Bently Nevada 3500/44-02-00 is a 4-channel Aeroderivative Gas Turbine vibration monitor featuring the 126623-01 I/O module. It utilizes advanced tracking filters to isolate N1/N2 rotor speeds and employs an external termination architecture for streamlined maintenance in mission-critical power generation environments.
Bently Nevada 350800-01-180 Hazardous Gas Sensor
The Bently Nevada 350800-01-180 is a high-precision hazardous gas sensor designed for the 3500 series monitoring system. It provides continuous detection of combustible gases and machinery vibration in extreme environments, ensuring personnel safety and protecting critical rotating assets in power and oil & gas facilities.
Bently Nevada 128240-01 3500 System Proximitor/Seismic I/O Module
The Bently Nevada 128240-01 is a Proximitor/Seismic I/O Module for the 3500 monitoring system. Designed for high-precision data acquisition from vibration and position sensors, it features external terminations, MODBUS RTU support, and a rugged IP67-rated construction for critical machinery protection.
Bently Nevada 3500/15-04-04-01 Low Voltage DC Power Input Module
The Bently Nevada 3500/15-04-04-01 (133300-01) provides regulated 24V DC power to the 3500 series machinery protection rack. This high-integrity module supports redundancy, features integrated surge protection, and ensures clean power delivery for critical vibration monitoring and machinery safety.
Bently Nevada 125760-01 Data Manager I/O Module
The Bently Nevada 125760-01 is a Data Manager I/O Module designed for the 3500/20 Rack Interface system. It facilitates seamless communication between the 3500 rack and external host software, enabling advanced data collection, rack configuration, and machinery diagnostics. This module is essential for integrating 3500 series racks with Bently Nevada communication processors for comprehensive asset protection.
Bently Nevada 130944-01 128275-01 3500 System Blank Plate
The Bently Nevada 130944-01 (128275-01) is a high-quality blank plate designed for the 3500 Machinery Protection System. It preserves internal rack airflow, provides EMI/RFI shielding, and protects unused backplane slots from industrial contaminants to ensure peak system performance.
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.
128275-01 | Bently Nevada | Monitor Module
128275-01 Product datasheet
Model number: | 128275-01 | Module Type: | Slot Cover 3500 Future Expansion | |
Manufacture: | Bently Nevada | Condition: | Brand New | |
Range of Product: | 3500 system | Lead time: | In Stock | |
Weight: | 0.06kg | HS CODE: | 8537101190 | |
Dimension: | 24x2.8x2.8cm | MOQ: | 1 | |
Product Origin: | USA | System: | TSI | |
Discontinued on: | active | Communication Service: | Ethernet router |
128275-01Functional Description
The 128275-01 Slot Cover 3500 Future Expansion is expertly crafted from high-quality stainless steel, providing exceptional durability and resistance to corrosion in demanding industrial environments. Its robust construction ensures long-term performance, even under harsh operating conditions.
Measuring 120mm x 120mm x 3mm, the 128275-01 Bently Nevada 3500 monitoroffers a compact and space-efficient design, making it easy to install and integrate into a variety of industrial automation systems without affecting overall efficiency.
Designed to operate in extreme temperature conditions ranging from -40°C to +85°C, this slot cover guarantees reliable performance and protection across a wide range of applications, ensuring uninterrupted operation in challenging environments.
With seamless compatibility with Bently Nevada automation systems, the 128275-01 Future Expansion Blankfacilitates optimal interaction and data integrity, enhancing system reliability and operational efficiency.
Engineered to handle a DC 24V power supply, this slot cover is a cost-effective and practical solution for improving the resilience and functionality of existing control systems. Whether for new installations or system upgrades, the 128275-01 3500 Series Parts Slot Cover Future Expansionserves as an essential component for future expansion needs.
Bently Nevada 3500/15 114M5330-01 Low Voltage DC PIM
Technical Overview
The Bently Nevada 3500/15 is a genuine industrial automation component designed for reliable operation in demanding environments. This high-quality product ensures optimal performance and long-term durability for critical machinery protection systems.
Detailed Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Part Number | 3500/15 |
| Condition | Brand New |
| Warranty | 12 Months |
Applications
- Power generation turbines and generators
- Oil & gas compressors and pumps
- Industrial rotating machinery monitoring
- Predictive maintenance systems
- Process automation in manufacturing plants
Operational Capabilities
This Bently Nevada 3500/15 component delivers consistent performance in harsh industrial environments. It is engineered for seamless integration with Bently Nevada monitoring systems, ensuring accurate data collection for predictive maintenance and operational efficiency.
Technical FAQ
Q: Is this an authentic Bently Nevada product?
A: Yes, this is a 100% genuine Bently Nevada product with full manufacturer warranty.
Q: What warranty is included?
A: All products include a standard 12-month warranty with comprehensive technical support.
Bently Nevada 3500/40M Position Monitor
Technical Overview
The Bently Nevada 3500/40M is a genuine industrial automation component designed for reliable operation in demanding environments. This high-quality product ensures optimal performance and long-term durability for critical machinery protection systems.
Detailed Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Part Number | 3500/40M |
| Condition | Brand New |
| Warranty | 12 Months |
Applications
- Power generation turbines and generators
- Oil & gas compressors and pumps
- Industrial rotating machinery monitoring
- Predictive maintenance systems
- Process automation in manufacturing plants
Operational Capabilities
This Bently Nevada 3500/40M component delivers consistent performance in harsh industrial environments. It is engineered for seamless integration with Bently Nevada monitoring systems, ensuring accurate data collection for predictive maintenance and operational efficiency.
Technical FAQ
Q: Is this an authentic Bently Nevada product?
A: Yes, this is a 100% genuine Bently Nevada product with full manufacturer warranty.
Q: What warranty is included?
A: All products include a standard 12-month warranty with comprehensive technical support.


























