Product Overview
The BENTLY 135613-02 is a specialized signal conditioning module within Bently Nevada’s 3500 Machinery Protection System, designed to process and amplify signals from proximity probes, vibration sensors, and position transducers. As a critical intermediary between raw sensor data and the system’s monitoring core, it ensures that measurements of shaft vibration, displacement, and rotational speed are converted into reliable, actionable data for industrial controllers.
Integral to Bently’s ecosystem, the BENTLY 135613-02 enhances signal integrity by filtering noise and stabilizing voltage, making it indispensable for accurate fault detection in high-voltage or high-electromagnetic interference (EMI) environments. Its robust design allows it to operate seamlessly in extreme temperatures and harsh industrial conditions, where lesser modules might fail. By ensuring the precision of sensor inputs, the BENTLY 135613-02 directly supports predictive maintenance strategies, helping facilities avoid unplanned downtime and extend the lifespan of critical machinery like turbines and compressors.
Technical Specifications
| Parameter |
Value |
| Product Model |
BENTLY 135613-02 |
| Manufacturer |
Bently Nevada |
| Product Type |
Signal Conditioning Module |
| Input Channels |
4 (configurable for proximity/vibration sensors) |
| Operating Voltage |
24 VDC ±10% |
| Operating Temperature |
-40°C to 70°C |
| Mounting Type |
3500 System Rack (19-inch standard) |
| Protection Rating |
IP20 (panel-mounted) |
| Signal Output |
4-20 mA analog + digital (RS-485) |
| EMI Resistance |
EN 61000-6-2 compliant |
| Compatibility |
Bently 3500/53 Vibration Module, 125680-01 Proximity Probes |
| Response Time |
<5 ms |
| Dimensions (WxHxD) |
30 x 120 x 150 mm |

Key Features and Benefits
The BENTLY 135613-02 excels in signal purification, using advanced filtering algorithms to reduce noise from motors, transformers, and high-voltage equipment—critical for maintaining the accuracy of vibration and position data. This ensures that even subtle machinery anomalies, such as early bearing wear, are detected before they escalate into failures.
Its four configurable channels offer flexibility, allowing integration with multiple sensor types (proximity probes, accelerometers) without requiring additional hardware. This reduces system complexity and installation costs, making it ideal for retrofits or expansions of existing 3500 systems.
Durability is a standout feature, with components rated for extended operation in temperatures from -40°C to 70°C—suitable for unheated industrial spaces or desert oil fields. The module’s compliance with EN 61000-6-2 EMI standards ensures reliable performance in electrically noisy environments like steel mills.
Compatibility with Bently’s 3500 monitoring software enables seamless data integration, allowing operators to correlate conditioned signals with other machinery metrics (e.g., temperature from 3500/62 modules). The BENTLY 135613-02 also includes self-diagnostics, alerting the system to internal faults or sensor disconnections, simplifying troubleshooting and minimizing downtime.
Application Scenarios
The BENTLY 135613-02 is widely used in industries where precise signal processing is critical. In coal-fired power plants, it conditions signals from proximity probes monitoring turbine generator shafts, ensuring accurate vibration data reaches the 3500 system. This allows operators to detect rotor misalignment early, preventing costly turbine damage and unplanned outages.
In offshore oil platforms, the module processes signals from vibration sensors on centrifugal compressors, filtering out noise from nearby pumps and electrical systems. Clean data from the BENTLY 135613-02 helps identify impeller wear, enabling maintenance during scheduled shutdowns rather than emergency repairs in harsh offshore conditions.
In chemical processing plants, it conditions LVDT signals from reactor agitator position sensors, ensuring precise measurements of shaft axial movement. This accuracy is vital for preventing seal leaks that could contaminate batches or pose safety risks, making the module a key contributor to process integrity.

Related Models
BENTLY 135613-01 – Previous generation module with basic filtering, compatible with legacy 3500 systems.
BENTLY 135613-03 – High-temperature variant rated for -55°C to 85°C, ideal for steam turbine applications.
BENTLY 135614-02 – 8-channel expansion module, works with BENTLY 135613-02 for larger sensor arrays.
BENTLY 135615-02 – Fiber-optic signal conditioner, paired with BENTLY 135613-02 in ultra-high EMI environments.
BENTLY 3500/20 – Rack interface module, required to connect BENTLY 135613-02 to the 3500 system backplane.
BENTLY 135613-04 – Explosion-proof variant (ATEX Zone 1), suitable for hazardous chemical processing areas.
Installation and Maintenance
Installation of the BENTLY 135613-02 requires insertion into a compatible 3500 system rack, with 5 cm clearance on all sides to ensure airflow. The module must be grounded to the rack’s common ground (≤1Ω resistance) to minimize EMI. Sensor wiring should use shielded twisted-pair cables, with shields grounded at both ends to prevent noise ingress. Environmental conditions must stay within -40°C to 70°C, with relative humidity below 90% (non-condensing).
For maintenance, quarterly visual inspections of connections are recommended to check for corrosion or loosening, which can degrade signal quality. Annual calibration against a certified signal generator ensures measurement accuracy. The BENTLY 135613-02 includes status LEDs; persistent fault indicators should trigger a review via 3500 software to identify issues like power supply fluctuations or sensor degradation. Replacement of aging input filters (every 5 years) helps sustain performance.
Product Warranty
The BENTLY 135613-02 is backed by a one-year warranty from Xiamen Xiongba E-commerce Co., Ltd., covering manufacturing defects and performance issues. During this period, we provide free replacement for any unit failing to meet operational specifications, ensuring minimal disruption to your machinery protection system. Our technical support team offers guidance on installation, sensor pairing, and troubleshooting, leveraging over a decade of industrial automation expertise. This warranty reflects our confidence in the BENTLY 135613-02’s reliability and our commitment to customer satisfaction in critical industrial environments.
Company Introduction
Xiamen Xiongba E-commerce Co., Ltd. Branch specializes in the field of industrial automation, focusing on the sales of Distributed Control Systems (DCS), robot systems, and modules and spare parts for large-scale servo control systems. Our business covers a wide range of industrial automation products, including PLCs, MOTOROLA MVME industrial modules, Anybus communication converters, RTU remote modules, industrial PCs, low-frequency industrial displays, and SCSI human-machine interfaces. With over a decade of industry experience, Xiongba has grown into a global supplier of industrial automation spare parts. We source directly from overseas, offering products and parts from multiple countries and manufacturers. This helps solve customers' procurement challenges, ensures product quality, and provides a significant price advantage. We offer a one-year warranty and free replacement service.