Keller

Keller manufactures pressure instrumentation. The piezoresistive 21Y family includes multiple pressure ranges and connection options; the series name does not identify a complete configuration.

21Y selection
Specify the pressure reference, lower and upper limits, medium, operating temperature and possible pressure peaks. Check wetted materials and the process seal for the application.

Electrical output
Variants include 4–20 mA and 0–10 V outputs. Verify supply requirements, load and pin assignment against the exact version. Matching connectors alone does not establish compatibility.

Replacement
Provide the complete PA-21Y marking, product number, label photo and wiring diagram. Confirm the thread, mounting space and controller input before agreeing a replacement.

Send SpareX codes, quantities and document requirements. List mating connectors and adapters separately. Supply feasibility, price and lead time are confirmed for the agreed configuration. Commissioning and controller setup require a separate scope.

Contact SpareX for a supply enquiry · Brand directory

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