Product Short Description
Bently Nevada 136719-01 is an original factory full-height intrinsically safe earthing barrier I/O module manufactured by Baker Hughes Bently Nevada USA, belonging to the official 3500 Series Machinery Protection & Condition Monitoring System.
This module acts as a dedicated intrinsically safe isolation interface between field eddy current proximity probes, accelerometers, displacement sensors and the internal 3500 monitoring rack backplane. It provides complete electrical isolation, safe earthing protection, signal conditioning and transient surge suppression for field transducer circuits.
Description
Basic Identification Parameters
- Brand: Bently Nevada (Baker Hughes Group)
- Exact Model: 136719-01
- Equivalent System Model: 3500/04 Internal Earthing Barrier Module
- Product Category: Intrinsically Safe Isolation Barrier / Field Transducer Earthing I/O Interface Module
- Origin: United States
- Standard Warranty: 12 months original factory warranty
- Installation Method: Standard plug-in insertion into dedicated slots of 3500 monitoring rack backplane
- Module Structure: Standard full-height modular design
- Installation Feature: Hot-swappable plug-in design, supports replacement without system power-off
- System Compatibility: Full compatibility with all 3500 series vibration/displacement monitor modules, power modules and communication modules
Power Supply Specifications
- Operating Power Supply: Powered by internal 3500 system backplane 24 VDC
- Operating Voltage Range: 18–36 VDC
- Typical Power Consumption: 3.8 W
- Maximum Power Consumption: 4.5 W
- Built-in protection: Overvoltage, overcurrent, reverse polarity and surge transient protection circuits
Signal & Intrinsic Safety Specifications
- Total Isolated Transducer Channels: 8 independent fully isolated channels
- Compatible Sensors: Eddy current proximity probes, ICP accelerometers, Keyphasor speed sensors, displacement transducers
- Signal Isolation Voltage: 2500 VAC galvanic isolation between field side and system side
- Intrinsic Safety Certification: ATEX / IECEx intrinsically safe compliant for hazardous area Zone 0/1/2
- Transient Surge Protection: Built-in high-speed ESD surge suppression circuits for all channels
- Frequency Response Range: 5 Hz – 20 kHz flat amplitude response
- Signal Transmission Accuracy: ±0.5% Full Scale
- Dynamic Response Time: ≤6 ms
- Field Input Signal Types: DC gap voltage, AC vibration signal, pulse speed signal
- Internal Output Signal Types: Buffered isolated analog signals matching 3500 monitor modules
Mechanical & Environmental Specifications
- Enclosure Protection Grade: IP20 (rack internal protection)
- Housing Material: High-strength anodized aluminum alloy shielding shell + flame-retardant circuit board
- Overall Dimensions: 241 mm × 24.4 mm × 242 mm (standard 3500 full-height size)
- Product Weight: 0.4 kg
- Operating Temperature Range: -40°C to +85°C
- Storage Temperature Range: -55°C to +105°C
- Operating Humidity: 0–95% RH, non-condensing
- Anti-vibration Performance: 15 g RMS, 10–2000 Hz
- Electromagnetic Compatibility: Compliant with EN 61000-6-2, EN 61000-6-3 industrial EMC standards
Certifications & Compliance
- Industry Standard Compliance: API 670 Machinery Protection Standard
- Safety Certifications: CE, ATEX, IECEx Intrinsically Safe Certified
- Full compliance with original 3500 system factory installation and acceptance specifications
Core Functional Features
- 8-Channel Full Galvanic Isolation & Intrinsic Safety Protection
Provides complete electrical isolation between hazardous area field sensors and safe area internal monitoring system, meets Zone 0/1/2 explosive environment intrinsic safety requirements, prevents dangerous energy diffusion from safe area to dangerous area.
- Professional Earthing & Surge Suppression Design
Integrates dedicated reliable earthing circuits and high-speed transient surge protection, effectively suppresses electrostatic discharge, lightning surge and industrial electromagnetic interference on sensor cables.
- Complete Transducer Signal Conditioning & Buffering
Performs professional filtering, conditioning and buffering on raw sensor signals, transmits high-quality stable signals to backplane monitor modules, improves signal anti-interference ability and measurement stability.
- Hot-Swappable Plug-In Structure
Supports online replacement without system power shutdown, greatly reduces maintenance downtime and on-site operation difficulty.
- Full Channel Fault Self-Diagnosis Function
Automatically detects sensor disconnection, cable short circuit, open circuit and abnormal signal status, outputs safe defeat state and avoids false alarm and false interlock actions.
- Perfect 3500 System Seamless Integration
Fully matches original 3500 system backplane communication and electrical interfaces, completely consistent with original system monitoring logic and safety protection rules.
- Ultra-Harsh Environment Adaptability
Wide temperature resistance, strong anti-vibration and anti-interference performance, supports long-term unattended stable operation in industrial hazardous sites.
- Standardized Hazardous Area Installation Compliance
Meets global explosive area installation specifications, is mandatory original configuration for 3500 system hazardous area project acceptance.
Main Application Scenarios
- Oil & Natural Gas Industry
Intrinsically safe barrier interface modules for offshore platforms, gas transmission stations, compressors, gas turbines and oil pipeline pump units 3500 machinery protection monitoring systems.
- Petrochemical & Chemical Industry
Hazardous area sensor isolation earthing modules for centrifugal compressors, reciprocating compressors, large centrifugal pumps, fans and reaction kettle drive rotating equipment 3500 protection systems.
- Thermal Power Generation Industry
Intrinsically safe signal interface units for steam turbine, gas turbine and generator rotor bearing vibration & displacement 3500 TSI monitoring systems in explosive auxiliary areas.
- Heavy Metallurgy & Energy Industry
Hazardous area barrier I/O modules for large rolling mills, high-speed centrifuges and heavy-duty motor rotating machinery monitoring systems.
- Hazardous Area System Retrofit & Acceptance Projects
Original spare replacement, hazardous area transformation and project acceptance dedicated configuration for old 3500 system internal barrier modules.






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