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ABB AI950S 3KDE175521L9500 S900 I/O Temperature Input TI4-Ex

SKU ABB AI950S 3KDE175521L9500

In stock

12-month warranty
Free returns within 30 days

Manufacturer: ABB
Product No.: ABB AI950S 3KDE175521L9500
Origin Germany
Product Type: Temperature Input Modules
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 0.12 kg
Dimensions: 2 cm x 10.5 cm x 11 cm
Shipping port: Xiamen
Warranty: 12 months

Product Description

Description

The ABB AI950S 3KDE175521L9500 is a precision temperature input module belonging to the ABB S900 I/O remote I/O series, specifically functioning as the TI4-Ex variant designed for hazardous area installations. This intrinsically safe module processes signals from various temperature sensors and transmits digitized process values to the control system via fieldbus communication. It is engineered for integration into modular remote I/O stations, providing accurate thermal measurement and monitoring across demanding industrial process automation environments.

Built for harsh industrial deployments, the AI950S module supports direct connection of thermocouples and resistance temperature detectors (RTDs), incorporating internal cold junction compensation and comprehensive sensor fault diagnostics. Its modular plug-in construction allows for rapid installation and hot-swapping on dedicated backplanes or terminal blocks within Zone 1 or Zone 2 hazardous locations, communicating upstream with distributed control systems (DCS).

Features

Four-channel temperature input configuration optimized for RTD and thermocouple measurements
Intrinsically safe Ex-rating for installation in Zone 1 and Zone 2 hazardous areas
Supports multiple sensor types including Pt100, Ni100, thermocouples (types B, E, J, K, N, R, S, T), and resistance/voltage inputs
Integrated cold junction compensation for high-accuracy thermocouple readings
Comprehensive onboard diagnostics including open-circuit, short-circuit, and out-of-range detection
Hot-swap capability for maintenance without shutting down the entire I/O node
Modular design engineered for seamless mounting on S900 system backplanes

Applications

Chemical and petrochemical processing plants
Oil and gas upstream and downstream facilities
Pharmaceutical manufacturing monitoring systems
Power generation turbine and boiler temperature profiling
Water and wastewater treatment process loops

Technical Specifications

Parameter	Specification
Manufacturer	ABB
Product Series	S900 I/O
Exact Model / Ordering Number	AI950S 3KDE175521L9500
Module Type	Temperature Input (TI4-Ex)
Number of Channels	4 channels
Supported Sensor Types	RTD (Pt100, Ni100), Thermocouples, Resistance, Millivolt
Explosion Protection	Ex-rated for Zone 1 and Zone 2
System Integration	ABB S900 Remote I/O System / DCS
Country of Origin	Germany
Net Weight	0.25 kg
Dimensions	10.5 x 2.0 x 11.0 cm

Installation Guidelines

Verify that the part number AI950S 3KDE175521L9500 matches your system engineering documentation and hazardous area classification requirements.
Ensure power to the corresponding S900 remote I/O node and associated field circuits is de-energized before handling hardware.
Inspect the module and base terminal unit for any physical transport damage or contamination.
Mount the AI950S module onto the designated slot of the S900 backplane or terminal block, securing it according to manufacturer locking mechanisms.
Connect field sensors to the appropriate intrinsically safe terminal blocks, maintaining proper separation from non-intrinsically safe wiring.
Restore power and configure the channel parameters through the engineering station software.

Shipping & Returns

Global Express Shipping

Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our technical warranty.

FAQ

What sensor types are supported by the ABB AI950S 3KDE175521L9500?

The ABB AI950S 3KDE175521L9500 temperature input module supports a wide variety of field sensors across its four channels. Specifically, it accommodates RTDs such as Pt100 and Ni100, multiple thermocouple types including B, E, J, K, N, R, S, and T, as well as direct resistance and millivolt inputs. This versatility allows engineers to configure precise thermal measurement loops for diverse industrial applications.

Can the ABB AI950S 3KDE175521L9500 be installed in hazardous areas?

Yes, the ABB AI950S 3KDE175521L9500 is engineered as an intrinsically safe TI4-Ex variant specifically designed for hazardous location installations. It holds an Ex-rating permitting deployment directly within Zone 1 and Zone 2 explosive atmospheres. This makes it ideal for safety-critical monitoring in chemical plants and oil and gas facilities.

Does the ABB AI950S 3KDE175521L9500 support hot-swapping during maintenance?

The ABB AI950S 3KDE175521L9500 features a modular plug-in construction that supports hot-swapping capabilities on dedicated S900 system backplanes. Maintenance personnel can remove and replace the unit without shutting down the entire remote I/O node or interrupting the surrounding system. This functionality significantly reduces process downtime during scheduled servicing or module replacement.

What diagnostic features are integrated into the ABB AI950S 3KDE175521L9500?

The ABB AI950S 3KDE175521L9500 incorporates comprehensive onboard diagnostics to ensure reliable and accurate process data collection. These built-in diagnostic tools continuously monitor for open circuits, short circuits, and out-of-range sensor values. Any detected faults are communicated upstream to the distributed control system for immediate operator notification.

How does the ABB AI950S 3KDE175521L9500 handle thermocouple cold junction compensation?

The ABB AI950S 3KDE175521L9500 features integrated cold junction compensation directly within the module hardware for its thermocouple inputs. This internal compensation eliminates measurement errors caused by ambient temperature fluctuations at the terminal connections. Consequently, the system delivers highly accurate thermal profiles for demanding industrial automation environments.

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