Product Description
The BENTLY 3500/32 125712-01is a full-size axial position monitoring module within the Bently Nevada 3500 machinery protection system,designed specifically for critical thrust monitoring applications.This advanced monitoring solution provides continuous monitoring of axial shaft position to protect against thrust bearing failure in rotating equipment.Engineered for reliability in demanding industrial environments,it ensures early detection of potential machinery problems before they lead to catastrophic failures.
Application Scenarios
In a major hydroelectric power facility,the BENTLY 3500/32 125712-01modules were installed to monitor axial displacement on turbine-generator sets.During a sudden load rejection event,one module detected abnormal axial movement that exceeded safe operating limits.The 3500/32 125712-01immediately initiated a controlled shutdown,preventing thrust bearing damage that would have required an eight-week outage for repairs.The early warning and protective action saved an estimated$12 million in lost generation revenue and repair costs,while ensuring grid stability during a critical demand period.
Technical Specifications
Parameter
Specification
Product Model
3500/32 125712-01
Manufacturer
Bently Nevada(Baker Hughes)
Product Type
Axial Position Monitor
Module Size
Full-size Card
Channels
Dual Monitoring Channels
Measurement Range
±2.5mm(±100 mils)
Accuracy
±1%of Full Scale
Frequency Response
0 to 10 Hz
Sensor Input
Eddy Current Proximity Probes
Probe Type
8mm Diameter
Scale Factor
200 mV/mil(7.87 V/mm)
Alarm Settings
4 Programmable Setpoints/Channel
Response Time
<2 milliseconds
Power Supply
18-30 VDC via Backplane
Operating Temperature
-40°C to+85°C
Certifications
ATEX,SIL 2,cULus
Technical Features and Advantages
The BENTLY 3500/32 125712-01incorporates dual-channel redundancy with advanced diagnostics to ensure reliable thrust monitoring.Each channel operates independently with continuous self-checking of probe system integrity.The module’s high-resolution measurement capability detects micron-level axial position changes,providing early warning of developing thrust bearing problems.Automatic probe gap voltage monitoring ensures measurement accuracy while detecting probe health issues before they affect protection functions.
Advanced signal processing in the BENTLY 3500/32 125712-01includes digital filtering that eliminates noise while maintaining fast response to genuine axial displacement events.The module’s voting logic enhances reliability by comparing both channels and automatically selecting the valid measurement if one channel fails.Built-in transient capture records position data during alarm events,providing valuable diagnostic information for root cause analysis.
Dual-channel redundant monitoring with automatic validation
High-resolution measurement(0.25μm)for early fault detection
Continuous probe system diagnostics and health monitoring
Fast response time(<2ms)for critical protection
Built-in transient capture for event analysis
Industry Applications
The BENTLY 3500/32 125712-01finds critical application in steam and gas turbine protection,where axial clearance monitoring is essential for preventing catastrophic blade and diaphragm contact.In compressor stations,the module monitors axial displacement caused by pressure differentials across impellers.Hydroelectric installations rely on 3500/32 125712-01modules to detect excessive thrust bearing wear in turbine-generator sets.The module’s robust design ensures reliable operation in these demanding environments where equipment availability is crucial.
Integration and Configuration
Integration of the BENTLY 3500/32 125712-01requires proper probe installation with correct gap setting and alignment.Configuration using 3500 software establishes alarm setpoints based on equipment tolerances.The module interfaces with 3500/42Mvibration monitors and 3500/25temperature modules for comprehensive protection.Redundant configurations using multiple 3500/32modules provide enhanced reliability for critical applications.
Lifecycle Support
The BENTLY 3500/32 125712-01remains an active product with comprehensive manufacturer support.Our inventory includes new units with full warranty coverage.Technical support provides configuration assistance and troubleshooting expertise.Regular calibration verification ensures long-term measurement accuracy.Emergency replacement services minimize downtime during critical situations.
Contact us for expert assistance in implementing the BENTLY 3500/32 125712-01in your machinery protection system.Our engineers will ensure optimal configuration for your specific application requirements.
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