ABB AI950S 3KDE175521L9500 Intrinsically Safe Temperature Input Module

Product Overview

The ABB AI950S 3KDE175521L9500 acquires highly precise temperature signals inside explosive industrial atmospheres. This component safely translates analog field inputs into stable digital data points for distributed control networks.

Technical Specifications

• Manufacturer: ABB
• Country of Origin: Sweden
• Model Designation: AI950S TI4-Ex
• Order Number: 3KDE175521L9500
• Module Type: Intrinsically Safe Temperature Input (4 Channels)
• Product Infrastructure: S900 Remote I/O System
• Hazardous Area Rating: Ex-certified for Zone 1 / Zone 2 deployment
• Harmonized Tariff Code (HS Code): 8537101190
• Physical Dimensions: 2.0 cm x 10.5 cm x 11.0 cm
• Net Weight: 0.12 kg

Functional Characteristics

Intrinsically Safe Thermal Processing

Four isolated internal hardware channels digitize raw inputs from resistance temperature detectors (RTDs) and thermocouples. Because the module utilizes explosion-proof TI4-Ex electrical barriers, field technicians link field elements directly without adding external galvanic isolators. This integrated protection layout safely prevents sparks from traveling back into hazardous chemical zones.

Advanced Signal Processing

The module processor filters high-frequency electromagnetic noise out of the raw analog measurement lines automatically. Consequently, operators receive highly stable linear values even when sensor wires run adjacent to high-voltage equipment. This continuous filtration maintains tight calibration tolerances under variable operational states.

Modular Architecture and Diagnosis

The ultra-lightweight form factor clicks directly onto standard S900 backplanes to minimize system integration labor. Furthermore, internal diagnostics monitor open-circuit faults and shorted field wires in real time. This active tracking allows rapid field maintenance without interrupting adjacent operational channels on the same sub-rack.