Bently Nevada 79492-01

Description

Basic Identification Parameters

• Brand: Bently Nevada (Baker Hughes Group)
• Exact Model: 79492-01
• System Series: 3300/35 Temperature Monitor
• Product Category: Multi-channel Analog Temperature Monitoring Module / Machinery Thermal Protection Unit
• Origin: United States
• Standard Warranty: 12 months original factory warranty
• Installation Method: Standard plug-in insertion into 3300 series monitoring rack backplane
• Compatible System: Full compatibility with Bently Nevada 3300 series machinery protection monitoring racks

Power Supply Specifications

• Rated Operating Power Supply: 24 VDC
• Operating Voltage Range: 18–36 VDC
• Typical Power Consumption: 4.8 W
• Maximum Power Consumption: 5.5 W
• Power Supply Protection: Built-in overvoltage, overcurrent and reverse connection protection circuits

Measurement & Channel Specifications

• Total Independent Input Channels: 6 channels
• Supported Sensor Types: PT100 / PT500 / PT1000 RTD resistance temperature detectors, standard industrial thermocouples
• Full Temperature Measurement Range: -200°C to +850°C
• Temperature Resolution: 0.1°C
• Full-Scale Measurement Accuracy: ±0.1% FS
• Signal Resolution: 0.03% FS
• Repeatability Error: ±0.5% FS
• Zero Point Drift: ±0.1% FS
• Span Drift: ±0.1% FS
• Dynamic Response Time: ≤150 ms
• Channel Isolation Voltage: 250 VAC between independent channels

Signal Output Specifications

• Analog Output Signal: Standard 4–20 mA DC industrial current loop signal
• Optional Output: 0–10 VDC analog voltage signal
• Alarm Output: Built-in relay contact alarm output (High Alarm / Danger Alarm)
• Internal Backplane Communication: High-speed digital communication with 3300 system main control backplane

Mechanical & Environmental Specifications

• Enclosure Protection Grade: IP65 dustproof and anti-electromagnetic interference
• Housing Material: Industrial metal shielding shell + high-temperature resistant flame-retardant circuit board
• Overall Dimensions: 241 mm × 24.4 mm × 242 mm
• Product Weight: 1.2 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: 10 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
• Hazardous Area Compliance: Suitable for general industrial non-explosive areas

Core Functional Features

1. 6-Channel Independent High-Precision Temperature Monitoring

   Equipped with 6 fully isolated analog input channels, simultaneously monitors 6 key temperature points of equipment, fully covers bearing, casing and stator thermal monitoring requirements of large rotating machinery.

2. Wide Compatibility with Multiple Temperature Sensors

   Directly supports PT100/PT500/PT1000 RTD and industrial thermocouples, no external signal conversion modules required, plug-and-play sensor connection.

3. Ultra-Low Drift High Stability Measurement Performance

   Adopts high-precision temperature compensation circuit, extremely low zero and span drift, maintains stable accurate readings under long-term continuous operation and large ambient temperature changes.

4. Configurable Dual-Level Alarm Protection Function

   Supports independent setting of warning alarm and danger alarm threshold for each channel, outputs relay interlock signals, realizes automatic equipment protection and early overheating fault warning.

5. Standard 4–20 mA Analog Signal Output

   Converts temperature data into standard industrial current loop signals, directly uploads data to DCS, PLC and central control room monitoring platforms.

6. Full 3300 System Seamless Integration

   Standard plug-in rack structure, communicates with 3300 system backplane, shares system alarm, display and management functions, consistent with original system operation logic.

7. Built-In Complete Fault Self-Diagnosis Function

   Automatically detects sensor disconnection, cable damage and channel abnormal status, outputs fault signals and avoids false alarm and false interlock actions.

8. Robust Anti-Harsh Industrial Design

   Metal shielding shell, wide temperature resistance, strong anti-electromagnetic interference performance, adapts to long-term unattended operation in harsh industrial sites.

Main Application Scenarios

1. Thermal Power Generation Industry

   Bearing temperature, cylinder temperature and stator temperature real-time monitoring for steam turbines, gas turbines, generator rotors and auxiliary turbine machinery units.

2. Oil & Natural Gas Industry

   Thermal state monitoring of offshore platform compressors, gas turbines, oil pipeline pump units and gas transmission station rotating equipment bearing systems.

3. Petrochemical & Chemical Industry

   Bearing and casing temperature monitoring for large centrifugal compressors, reciprocating compressors, centrifugal pumps, fans and reaction kettle drive rotating machinery.

4. Heavy Metallurgy & Manufacturing Industry

   Temperature monitoring of large rolling mill main shafts, high-speed centrifuges, heavy-duty industrial motors and generator unit bearing systems.

5. Water Conservancy & Municipal Industry

   Thermal state monitoring for large circulating water pumps, drainage pump stations and hydraulic turbine units.

6. Equipment Maintenance & Retrofit Projects

   Original spare replacement and upgrade of old 3300/35 temperature monitoring modules, realizing seamless continuation of original machinery thermal protection monitoring functions.