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SKU: AI950S 3KDE175521L9500

ABB AI950S 3KDE175521L9500 S900 Temperature Input TI4-Ex

The ABB AI950S 3KDE175521L9500 is a 4-channel intrinsically safe temperature input module for S900 I/O systems. It supports RTDs and thermocouples in hazardous areas, offering high-precision signal conversion and hot-swap capabilities for advanced industrial process monitoring.

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Technical Overview

The AI950S (3KDE175521L9500) functions as a specialized intrinsically safe analog input module within the ABB S900 I/O system. This TI4-Ex submodule provides four channels dedicated to temperature measurement, specifically engineered for deployment in hazardous areas. By converting signals from Resistance Temperature Detectors (RTDs) and thermocouples into digital data, the module enables precise thermal monitoring for critical process control applications.

The hardware utilizes a plug-in design that allows for hot-swapping during active operations, which significantly reduces system downtime. Furthermore, the AI950S maintains high-level galvanic isolation between the field circuits and the internal system bus. This isolation protects the central control architecture from electrical surges while ensuring signal integrity in environments characterized by high electromagnetic interference.

Functional Capabilities and Process Integration

  • Intrinsic Safety: Certified for TI4-Ex applications, allowing direct connection to sensors located in Zone 1 and Zone 0 explosive atmospheres.
  • Sensor Versatility: Supports a wide array of temperature sensors, including various thermocouple types and Pt100/Pt1000 RTD configurations.
  • Signal Conditioning: Employs advanced internal linearization and cold-junction compensation to deliver superior measurement accuracy.
  • Environmental Resilience: Operates reliably across a broad temperature spectrum, maintaining stable performance in fluctuating industrial climates.
  • Diagnostic Intelligence: Features integrated wire-break and short-circuit detection to facilitate rapid troubleshooting and preventive maintenance.
  • Seamless Interoperability: Integrates fully with ABB’s automation ecosystems via standard communication protocols, ensuring efficient data throughput for DCS and PLC units.

Technical Specifications

  • Brand: ABB
  • Model Identification: AI950S
  • Part Number: 3KDE175521L9500
  • Series: S900 Remote I/O
  • Module Type: Temperature Input (TI4-Ex)
  • Number of Channels: 4
  • Dimensions: 20 mm x 105 mm x 110 mm
  • Net Weight: 0.12 kg
  • Manufacturing Origin: Sweden
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