Technical fit record for ABB AI950S
ABB AI950S is indexed here as a specific buying and service reference. Confirm its complete designation before assuming that another family member has the same terminals, electrical duty or approvals.
Verified technical data
| Technical item | Verified value / selection note |
|---|---|
| Complete designation | AI950S |
| Product family | AI950S |
| Component role | S900 intrinsically safe temperature input |
| Platform | S900 I/O |
| Channels | 4 isolated temperature inputs |
| Sensors | RTD or thermocouple per configured input |
| Area version | TI4-Ex |
| ABB article | 3KDE175521L9500 |
| Final configuration | Confirm exact nameplate, hardware revision and order options before purchase |
The table for ABB AI950S separates verified family data from the configuration checks that still require a nameplate or ABB order record. Do not use a family rating as an unconditional guarantee for the installed unit.
Purchase decision
Specify ABB AI950S against a particular asset tag and duty. This unit is used to acquire approved hazardous-area temperature measurements; record the intended circuit, process or equipment location before requesting a quote.
For AI950S, confirm RTD/TC type, cold-junction practice, Ex approval and terminal arrangement. A matching short family name is not sufficient evidence of electrical, mechanical or software interchangeability.
Commissioning evidence
For AI950S, prove each channel against a traceable temperature source. Carry out only the tests approved for this device and the connected installation.
Save the as-left settings, measured results, witness and work-order reference for AI950S. Any temporary bypass or inhibited alarm must be removed before normal operation.
Interface checklist
Before ordering AI950S, compare the installed terminal or connector arrangement, power source, mounting envelope and ancillary hardware with the current drawing.
Document the serial number and revision of AI950S where available. If a supplier proposes a substitute, obtain engineering acceptance for every changed interface.
Receipt inspection
On arrival, compare the supplied AI950S label and order code with the approved purchase description. Inspect packaging, terminals, seals and visible damage.
Do not install AI950S when the shipped suffix, control voltage, release or approval differs from the approved build; resolve that discrepancy before commissioning.
Site preparation
Plan the AI950S replacement under the facility isolation and permit rules. Preserve photographs, configuration files, settings and a diagnostic baseline before disturbing wiring.
Check enclosure temperature, grounding, segregation and protection coordination for AI950S. Record any accessory that is supplied separately rather than assuming it is in the device box.
Lifecycle handover
Keep ABB AI950S linked to its exact spares description, drawings and current manual revision. This helps the next maintenance team identify the same configuration rather than a superficially similar item.
Review the first operating period of AI950S for alarms, heating, drift or switching anomalies and update the asset record if the installed build differs from the original request.
Related configuration references
The following AI950S codes are recorded with ABB AI950S for enquiry. Suffixes may alter ratings, dimensions, approvals or accessories; these are not automatic replacements.
No additional unassigned AI950S code is grouped with AI950S at this stage.
Information to send with an enquiry
Quote ABB AI950S exactly and include the asset tag, electrical or process duty, required accessories and delivery documentation.
For AI950S, request written confirmation of any deviation from the fitted unit before accepting an alternative.
