Bently Nevada 125388-01

Description

Basic Identification Parameters

• Brand: Bently Nevada (Baker Hughes Group)
• Exact Model: 125388-01
• System Series: 3500 Series Machinery Protection System
• Product Category: Half-Height Field I/O Interface Module / Vibration Signal Acquisition Module
• Origin: United States
• Standard Warranty: 12 months original factory warranty
• Installation Type: Standard plug-in insertion into 3500 series monitoring rack backplane
• Module Structure: Half-height modular design
• Compatible Main Monitoring Modules: 3500/40, 3500/42, 3500/45 vibration & displacement monitor modules

Power Supply Specifications

• Operating Power Supply: 24 VDC nominal
• Operating Voltage Range: 18–36 VDC
• Typical Power Consumption: 4.2 W
• Maximum Power Consumption: 4.9 W
• Power Supply Protection: Built-in overvoltage, overcurrent, reverse polarity and surge protection circuits
• Backplane Power Supply: Powered by internal 3500 system main power supply module

Signal & Measurement Specifications

• Total Independent Field Input Channels: 8 isolated channels
• Compatible Sensors: Eddy current proximity probes, ICP accelerometers, Keyphasor speed sensors, displacement transducers
• Frequency Response Range: 5 Hz – 20 kHz flat response
• Valid Probe Gap Measuring Range: 0.25–2.5 mm
• Measurement Accuracy: ±0.5% Full Scale
• Signal Resolution: 0.1 μm
• Dynamic Response Time: ≤8 ms
• Channel Isolation Voltage: 250 VAC mutual isolation between channels
• Analog Input Signal Types: DC gap voltage, AC vibration signal, pulse speed signal
• Analog Output Signal Types: Standard 4–20 mA DC, 0–10 VDC industrial analog signals

Communication Specifications

• Internal Interface: High-speed digital backplane communication with 3500 system main control board
• External Interface: Field terminal signal interface, front-panel buffered signal test interface
• Supported System Integration: Full compatibility with System 1 condition monitoring software platform

Mechanical & Environmental Specifications

• Enclosure Protection Grade: IP20
• Housing Material: Industrial metal shielding shell + high-temperature flame-retardant circuit board
• Overall Dimensions: 241 mm × 12.2 mm × 242 mm
• Product Weight: 0.58 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 Certified
• System Compatibility: Full backward compatibility with legacy 3500 system hardware and software

Core Functional Features

1. 8-Channel Fully Isolated Field Signal Acquisition

   Equipped with 8 independent isolated input channels, simultaneously collects radial vibration, axial thrust displacement, speed and gap signals from multiple measuring points of rotating machinery.

2. Professional Signal Isolation & Conditioning

   Built-in high-precision isolation and filtering circuits, effectively suppress industrial electromagnetic interference, separate DC static gap signal and AC dynamic vibration signal completely.

3. Complete Fault Safety Protection Mechanism

   Automatically detects probe disconnection, cable damage, short circuit and abnormal signal status, outputs safe defeat state and prevents false alarm and false interlock actions.

4. Front-Panel Buffered Test Signal Interface

   Each channel is equipped with independent coaxial buffered signal output terminal, supports on-site signal testing and diagnosis without dismantling field wiring.

5. Standard Half-Height Plug-In Design

   Matches original 3500 rack slot size, plug-and-play installation, convenient for on-site replacement, maintenance and system expansion.

6. Full 3500 System Seamless Integration

   Perfectly matches 3500/40/42/45 monitor modules, shares system alarm logic, display function and System 1 upper monitoring platform.

7. Ultra-Wide Temperature & Harsh Environment Adaptability

   Wide operating temperature range, strong anti-vibration and anti-interference performance, supports long-term unattended stable operation in industrial sites.

8. High Stability Low Drift Performance

   Adopts temperature-compensated signal processing circuit, maintains consistent accurate measurement data during full life cycle operation.

Main Application Scenarios

1. Thermal Power Generation Industry

   Front-end signal acquisition for steam turbine, gas turbine, generator rotor bearing radial vibration, axial thrust position and keyphasor speed monitoring of 3500 TSI protection systems.

2. Oil & Natural Gas Industry

   Field signal interface modules for offshore platform compressors, gas turbines, oil pipeline pump units and gas transmission station rotating machinery condition monitoring systems.

3. Petrochemical & Chemical Industry

   Signal acquisition for centrifugal compressors, reciprocating compressors, large centrifugal pumps, fans and reaction kettle drive rotating equipment vibration and displacement monitoring.

4. Heavy Metallurgy & Manufacturing Industry

   3500 system I/O interface for large rolling mill main shafts, high-speed centrifuges, heavy-duty industrial motors and generator unit health monitoring.

5. Water Conservancy & Municipal Industry

   Signal acquisition modules for large circulating water pumps, drainage pump stations and hydraulic turbine unit vibration and shaft position monitoring systems.

6. System Maintenance & Retrofit Projects

   Original spare replacement and upgrade of old 3500 half-height I/O interface modules, realizing seamless continuation of original machinery protection monitoring functions.