Applications

1. Honeywell Experion PKS C200 systems
2. C200 controller processing
3. Distributed process control
4. Control strategy execution
5. Industrial automation systems
6. Oil and gas automation
7. Petrochemical control
8. Refinery DCS
9. Chemical production
10. Power plant automation
11. Process-industry control cabinets
12. Legacy Honeywell controller maintenance
13. C200 processor replacement
14. Industrial automation spare-parts inventory

Verification & Quality Control

Our inspection procedure for the Honeywell TK-PRS021 includes:

1. Confirming the TK-PRS021 model.
2. Matching the 51404305-275 part number.
3. Checking the Honeywell identification label.
4. Confirming that the hardware is the coated version.
5. Checking the hardware revision.
6. Checking firmware information where available.
7. Inspecting the chassis connector.
8. Inspecting the processor board.
9. Checking for oxidation, corrosion or contamination.
10. Inspecting the battery area.
11. Checking front-panel LEDs and indicators.
12. Providing actual product photos before shipment when requested.
13. Functional testing with compatible C200 equipment when available.
14. Packing the processor with anti-static and shock-protection materials.

Procurement Verification

Before confirming a replacement, ask the customer to send:

Model: TK-PRS021
Part Number: 51404305-275
System: Experion PKS C200
Version: Coated
Hardware Revision: As shown on the existing unit

This avoids confusion with TK-PRS022, which Honeywell identifies separately as the C200E Control Processor.