Bently Nevada 3500/60 (163179-01 SIL) Temperature Monitor Module

1. Basic Product Overview

• Full Model: 3500/60, Part Number: 163179-01, SIL-certified safety version
• Manufacturer: Bently Nevada (Baker Hughes)
• Series: 3500 Machinery Protection System Rack Module
• Type: 6-channel temperature monitoring module, SIL 2 certified for safety instrumented systems
• Core Function: Collect temperature signals from RTD & thermocouple sensors, execute over-temperature alarm logic, drive safety relay trips for rotating machinery protection

2. Core Channel & Sensor Input Specifications

Channel Layout

Supported Sensors

1. Thermocouple (TC): Type E, J, K, T
2. RTD (Resistance Temperature Detector):
   • 3/4-wire Pt100 (α=0.00385 / 0.00392)
   • Ni120, Cu10 3/4-wire sensors

• Input impedance: 10 MΩ per lead
• RTD excitation current: 925±15 µA @25°C
• Measurement resolution: 1 °C / 1 °F, high precision linearized conversion
• Cold-junction compensation built-in for thermocouple measurement

Alarm & Relay Output

• 8 Form C changeover relays per module, rated 5A @250VAC
• Relay actuation time <10ms for fast safety trip response
• Each channel supports independent Alert (warning) & Danger (trip) setpoints programmable via rack software
• Channel break detection for open/shorted sensor wiring faults

3. SIL Safety Certification Features

• Safety Integrity Level: SIL 2 certified per IEC 61508 for machinery protection safety loops
• Full hardware self-diagnosis: continuous circuit health check, fault reporting to rack interface
• Supports TMR (Triple Modular Redundant) three-module voting configuration for critical turbine/compressor safety systems
• Fault-safe design: module defaults to alarm/trip state upon internal hardware failure
• Conformal coated PCB for harsh industrial cabinet environments (ISA S71.04 Class G3)

4. Electrical & Mechanical Parameters

• Power consumption: 7 Watts nominal
• Rack supply: 24VDC backplane power from 3500/15 power supply modules
• Mounting: Single slot plug-in for standard 3500 rack, hot-swap capable
• Dimensions: 241.3 H × 24.4 W × 163.1 D mm
• Net weight: ~0.8 kg
• Operating ambient: -30°C ~ +65°C, 5%–95% RH non-condensing
• Storage temperature: -40°C ~ +85°C
• Front panel LED indicators: OK (module health), TX/RX (backplane communication), Bypass (channel disable status)

5. Isolation & Environmental Protection

• Two versions available: Non-isolated mixed TC/RTD; TC isolated variant with 250VDC channel-to-channel isolation
• Per-channel overvoltage, reverse polarity and short-circuit protection
• Hazardous area approvals: ATEX / IECEx Zone 2, CSA Class 1 Division 2 certified

6. Matching Supporting Components

1. Termination I/O board: 133819-01 field wiring terminal assembly for sensor cable termination
2. System rack: 3500 series standard rack, paired with 3500/05 rack interface module
3. Configuration software: 3500 Rack Configuration Software for sensor type, alarm threshold and relay mapping setup
4. Redundant accessories: Dual power supply modules, TMR rack mounting hardware for SIL safety loops

7. Key Advantages

1. 6-channel high-density temperature acquisition, reduces rack slot usage for multi-point bearing/rotor temperature monitoring
2. SIL 2 safety certification meets mandatory safety standards for power, oil & gas critical machinery
3. Hot-swap design enables online module replacement without full rack shutdown
4. Mixed RTD/TC compatibility eliminates separate signal conditioning hardware
5. Rapid <10ms relay trip speed prevents catastrophic equipment damage from overheating
6. Comprehensive sensor break diagnosis simplifies field maintenance troubleshooting
7. Conformal coated circuit board tolerates chemical vapor, dust and coastal high-humidity cabinets

8. Typical Application Scenarios

• Steam/gas turbine bearing, casing and exhaust temperature safety monitoring
• Centrifugal compressor, pump, fan rotating machinery protection systems
• Thermal power plant boiler auxiliary equipment temperature interlock control
• Oil & gas refinery and offshore platform rotating equipment safety loops
• Petrochemical process plant high-speed rotating machinery condition monitoring
• All industrial assets requiring SIL-rated over-temperature safety trip protection