136294-01 Isolated External Termination Block (for 3500/62 Isolated Module)

Description

136294-01 Isolated External Termination Block (for 3500/62 Isolated Module)

136294-01

5.1 Product Overview & Application Information

The 136294-01 is a dedicated factory-matched isolated external termination block designed exclusively for the Bently Nevada 3500/62 full channel-isolated process variable monitoring module. Serving as the core field wiring accessory for isolated 3500/62 variants, it provides standardized, channel-independent signal termination to fully preserve the module’s native galvanic isolation performance. Unlike general-purpose terminal blocks, this model features dedicated isolation partitioning and channel separation structure, eliminating artificial signal crosstalk and ground loop interference caused by on-site wiring.

It is specially developed to support 4–20 mA current and ±10 Vdc analog signal wiring for 3500/62 isolated modules, perfectly matching the 250 Vdc channel-to-channel isolation specification of 136483-01 module. It is widely applied in high-electromagnetic-interference industrial sites, multi-signal mixed wiring scenarios and SIL-rated safety instrument systems, ensuring complete isolation integrity from field sensor loop to module acquisition terminal.

136294-01

5.2 Core Technical Parameters

5.2.1 Basic Performance Parameters

• Applicable Module: Exclusively matched with 3500/62 full channel-isolated module (136483-01), compatible with 6-channel analog signal wiring
• Supported Signal Types: Industrial standard 4–20 mA analog current signal, -10 Vdc ~ +10 Vdc analog voltage signal
• Isolation Rating: 250 Vdc channel-to-channel isolation consistency, matching module-level isolation standards to avoid isolation attenuation
• Rated Withstand Voltage: 500 Vdc system-level insulation strength, meeting industrial surge and dielectric strength test requirements
• Wiring Specification: Standard European terminal wiring, supporting multi-core shielded signal cable access
• Channel Partition Design: Independent physical isolation partition for each channel, zero crosstalk between adjacent signal loops

5.2.2 Environmental & Mechanical Parameters

• Operating Temperature: -40℃ ~ +85℃, adapting to harsh industrial cabinet and field environment temperature changes
• Storage Temperature: -50℃ ~ +100℃
• Mechanical Structure: Standard cabinet mounting structure, compact size, suitable for standardized 3500 system cabinet layout
• Anti-Vibration Performance: Reinforced terminal crimping and fixing structure, preventing loose wiring in equipment vibration environments
• Protection Grade: Industrial dust-proof and anti-corrosion design, suitable for long-term on-site continuous operation

5.3 Main Product Features

• Strict Isolation Consistency Matching: Designed synchronously with 3500/62 isolated module, maintaining 250 Vdc per-channel isolation performance without destroying the module’s original isolation characteristics, solving the problem of isolation failure caused by ordinary terminal blocks
• Full Channel Physical Partitioning: Each signal channel adopts independent physical isolation partition structure, completely isolating current and voltage mixed signals, effectively suppressing inter-channel crosstalk and common-mode interference
• High-Stability Signal Transmission: Optimized terminal contact structure with low contact resistance, ensuring lossless transmission of weak analog signals, avoiding signal attenuation and data drift in long-term operation
• Harsh Environment Adaptability: Industrial-grade flame-retardant and anti-corrosion materials, excellent temperature resistance, vibration resistance and electromagnetic compatibility, suitable for petrochemical, power and heavy industrial harsh working conditions
• Standardized & Easy Wiring: Euro-style unified wiring terminals with clear channel marking, convenient for on-site standardized construction, later maintenance and circuit troubleshooting
• SIL Safety System Compliance: Meets safety instrument system wiring specifications, supporting TMR redundant system deployment and ESD emergency shutdown system matching, ensuring safety and reliability of safety loop wiring
• Explosion-Proof Hazardous Area Adaptation: Cooperates with intrinsic safety barriers to form a complete explosion-proof wiring loop, applicable to Class 1 Div 2 and Zone 2 hazardous industrial areas

5.4 Typical Application Scenarios

The 136294-01 dedicated isolated termination block is exclusively used for supporting wiring of 3500/62 full-isolated modules, focusing on high-precision and high-reliability industrial monitoring scenarios with strict anti-interference requirements:

• Multi-Signal Mixed Isolated Monitoring: On-site wiring for simultaneous acquisition of pressure, flow, liquid level and other heterogeneous analog signals, ensuring independent and non-interfering operation of each monitoring loop
• Strong Electromagnetic Interference Sites: Supporting signal termination for power plant auxiliary equipment, frequency converter workshop and high-power electrical unit process monitoring systems
• Floating Potential Equipment Monitoring: Eliminating ground loop interference and potential difference signal distortion in ungrounded sensor loop wiring scenarios
• SIL-Level Safety Instrument Systems: Standardized isolated wiring for key unit ESD emergency shutdown systems, ensuring safety loop signal stability and monitoring accuracy
• High-Precision Process Diagnosis: Providing pure interference-free signal transmission channels for equipment performance trend analysis, process optimization and predictive maintenance

136294-01

5.5 Supporting Matching Components

• 3500/62 136483-01 Full Isolated Module: Core matching host module, forming a complete isolated signal acquisition and wiring system
• Double-Shielded Analog Signal Cables: Supporting dedicated shielded cables to cooperate with terminal isolation performance and further suppress external electromagnetic interference
• Intrinsic Safety Isolation Barriers: Matched for hazardous area deployment to achieve double safety isolation of field loops and system terminals
• 3500 Series Standard Mounting Accessories: Universal fixed brackets and wiring accessories for unified cabinet standardized layout

5.6 Model Differentiation & Version Comparison

5.6.1 Differences Between Isolated Termination Blocks

• 136294-01: Dedicated isolated terminal block for 3500/62 full-channel isolated module (136483-01), with full channel physical isolation and 250Vdc isolation specification, exclusive for high-precision anti-interference scenarios
• Ordinary Non-Isolated Terminal Blocks: No channel isolation function, only suitable for standard non-isolated 3500/62 (163179-03 / 190085-03M) modules, unable to support high-interference and mixed-signal working conditions

5.6.2 Matching Relationship with 3500 Series Modules

• 3500/61 Module: Matched with 133900-01 / 133843-02 terminals, not applicable to 136294-01
• 3500/62 Standard/Enhanced Version (Non-Isolated): Adopts ordinary general-purpose terminals, no need for 136294-01 isolated terminals
• 3500/62 136483-01 (Full Isolated): Must be matched with 136294-01 dedicated isolated terminals to exert full isolation performance

5.7 System Compatibility

The 136294-01 termination block is fully compatible with all standard Bently Nevada 3500 rack systems. It perfectly matches the 3500/62 136483-01 full-isolated module, supports mixed installation with other 3500 series functional modules, and complies with the wiring specifications of 3500 system configuration software, ensuring stable and consistent operation of isolated monitoring loops.