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BENTLY 3500/20 125760-01 Product Specification
Product Overview
The BENTLY 3500/20 125760-01 is a high-performance dual-channel proximitor module designed for BENTLY’s 3500 Series Machinery Protection System. Engineered to process signals from eddy current proximity probes, this module plays a critical role in monitoring shaft displacement, vibration, and eccentricity in rotating machinery. As part of the 3500 Series, the BENTLY 3500/20 125760-01 integrates seamlessly with other system modules to form a comprehensive machinery health management solution, supporting predictive maintenance across industries such as oil and gas, power generation, and manufacturing.
Featuring two independent input channels, the BENTLY 3500/20 125760-01 converts analog signals from proximity probes into digital data for real-time analysis. Its software-configurable design allows users to customize alarm thresholds, filter settings, and measurement units (mil or micrometer), ensuring optimal performance in diverse operational environments. The module’s rugged IP23-rated enclosure and conformal-coated PCBs protect against dust, moisture, and electromagnetic interference (EMI), while its compact form factor (210 mm × 150 mm × 100 mm) and 2 kg weight facilitate easy installation in 19″ control racks.
In automation architectures, the BENTLY 3500/20 125760-01 acts as a frontline diagnostic tool, detecting early signs of machinery degradation such as shaft misalignment or bearing wear. Its high-frequency response (0–10 kHz) ensures accurate capture of dynamic movements, while the RS-485 communication interface enables seamless integration with PLCs and HMIs. By delivering reliable displacement data, the module helps minimize downtime, extend equipment lifespan, and enhance operational safety in mission-critical applications.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | BENTLY 3500/20 125760-01 |
| Manufacturer | BENTLY NEVADA |
| Product Type | Dual-Channel Proximitor Module |
| Input Channels | 2 channels (eddy current proximity probes) |
| Frequency Range | 0–10 kHz |
| Input Signal Range | 0–10 VDC (proximity probe output) |
| Output Signal | 4–20 mA, 0–10 VDC (configurable) |
| Power Supply | 24 VDC ±10% |
| Physical Dimensions | 210 mm (W) × 150 mm (H) × 100 mm (D) |
| Weight | 2.1 kg |
| Communication Interface | RS-485 (Modbus RTU compatible) |
| Operating Temperature | -25°C to +60°C |
| Humidity | 5–95% non-condensing |
| Certifications | CE, UL, ISO 10816 |
Main Features and Advantages
Dual-Channel Monitoring: The BENTLY 3500/20 125760-01 supports simultaneous monitoring of two critical points on rotating machinery, enabling comprehensive analysis of shaft movement across multiple axes. This feature is ideal for complex systems like turbines, where multi-point data collection is essential for accurate fault diagnosis.
Software-Defined Configuration: Users can tailor the module’s settings via BENTLY’s proprietary software, adjusting alarm levels, filter types (low-pass/band-pass), and measurement units to match specific machinery requirements. This flexibility reduces the need for hardware modifications, streamlining system deployment in diverse industrial setups.
Rugged Industrial Design: Constructed with an IP23-rated metal enclosure and anti-vibration mounting brackets, the module withstands harsh environments, including high temperatures, humidity, and mechanical stress. Its self-shielded design minimizes electromagnetic interference, ensuring reliable measurements in dense industrial installations.
Real-Time Data Integration: The RS-485 interface enables real-time transmission of displacement data to higher-level control systems, supporting remote monitoring and predictive maintenance. Engineers can access live diagnostics and historical trend data via SCADA platforms, enabling proactive intervention before equipment failures occur.
Modular System Scalability: As part of the 3500 Series, the BENTLY 3500/20 125760-01 can be combined with other modules (e.g., vibration monitors, power supplies) to create a fully integrated protection system. This scalability allows for easy expansion as operational needs evolve.
Application Areas
The BENTLY 3500/20 125760-01 is widely deployed in industries where precise shaft displacement monitoring is critical:
-
Oil and Gas:
- Monitors compressor shafts in refineries and pipeline networks, detecting early signs of cavitation or bearing wear to prevent unplanned shutdowns.
- Integrates with emergency shutdown systems (ESD) in offshore platforms, ensuring safety during extreme operational conditions.
-
Power Generation:
- Analyzes shaft displacement in steam turbines and generators to optimize performance and prevent stator-rotor contact in power plants.
- Supports condition-based maintenance programs by providing real-time data on rotor dynamics, enabling scheduled repairs to minimize downtime.
-
Manufacturing:
- Controls shaft alignment in high-speed packaging machinery and robotic arms, enhancing product quality and reducing production losses in automotive and pharmaceutical plants.
- Monitors motor shafts in conveyor systems to predict maintenance needs, improving overall equipment effectiveness (OEE).
-
Water/Wastewater Treatment:
- Ensures reliable operation of centrifugal pumps by detecting shaft misalignment or imbalance, maintaining consistent water flow in treatment facilities.
- Integrates with SCADA systems for remote monitoring of distributed pump stations, enabling proactive maintenance scheduling.
Related Products
- BENTLY 3500/22M 146031-01: A 4-channel vibration module, offering higher channel density for complex setups, often used alongside the BENTLY 3500/20 125760-01 for comprehensive machinery health analysis.
- BENTLY 3500/15 125840-02: A power input module that supplies stable 24 VDC to the BENTLY 3500/20 125760-01 and other 3500 Series components, ensuring uninterrupted operation.
- BENTLY 3500/32 129407-01: A speed/torque monitor that pairs with the BENTLY 3500/20 125760-01 to correlate displacement data with rotational speed, aiding in fault isolation.
- BENTLY 3500/42 129408-01: A temperature monitor module that complements displacement data by analyzing thermal performance, providing a comprehensive view of machinery health.
- BENTLY 3500/92 129410-01: A communication gateway that enables the BENTLY 3500/20 125760-01 to interface with Ethernet/IP networks, supporting remote diagnostics via cloud-based platforms.
Installation and Maintenance
Pre-installation Preparation:
Before installing the BENTLY 3500/20 125760-01, ensure the following:
Before installing the BENTLY 3500/20 125760-01, ensure the following:
- Verify the power supply meets 24 VDC ±10% and that the control rack is properly grounded to prevent electrostatic discharge (ESD). Use a multimeter to confirm voltage stability before connecting the module.
- Use BENTLY’s configuration software to define input channel parameters (probe type, range, alarm thresholds) based on machinery specifications.
- Mount the module in a 19″ rack with at least 50 mm of clearance for airflow, securing it with the provided brackets to minimize vibration-induced displacement.
Maintenance Recommendations:
- Routine Inspections: Monthly visual checks of front-panel LEDs (green for normal operation, red for faults) and cleaning of dust from ventilation slots to maintain optimal cooling. Use a soft brush to remove debris without damaging internal components.
- Calibration: Annual calibration of input channels using a BENTLY-certified calibrator to ensure measurement accuracy. This involves applying known displacement values and verifying output signals against standards.
- Firmware Updates: Periodically update the module’s firmware via BENTLY’s software to access new diagnostic features and compatibility improvements, particularly when integrating with newer system versions.
- System Testing: Biannual functional tests of alarm relays and communication protocols to ensure compliance with safety standards. Simulate displacement conditions to verify alarm triggers and data transmission reliability.
Product Warranty
Our company provides a one-year quality warranty for the BENTLY 3500/20 125760-01, covering hardware failures due to non-human factors. During the warranty period, we will replace any module that exhibits abnormal signal processing or functional defects. For discontinued models like the BENTLY 3500/20 125760-01, our global inventory of legacy industrial parts ensures rapid fulfillment of urgent orders. We also offer post-warranty technical support, including calibration services and repair solutions, to help maintain your equipment’s reliability throughout its lifecycle.
Contact Information:
Whatsapp: +86 18859254943
E-mail: sales@ygplc.com
Whatsapp: +86 18859254943
E-mail: sales@ygplc.com
Note: This document is based on technical data derived from BENTLY’s official specifications and industry applications. For detailed installation guidelines, refer to the BENTLY 3500/20 125760-01 user manual or contact our technical support team for personalized assistance.
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