When calibrating controls against measured air or water flows, which two contractors must collaborate?

When calibrating controls against measured air or water flows, which two contractors must collaborate?

• A. TAB; ATC
• B. ATC; TAB
• C. ATC; ACB
• D. Mechanical; Commissioning Authority

Answer: (B)

Calibrating controls against measured air or water flows requires collaboration between the TAB contractor, who measures and balances actual flows, and the Acceptance Testing and Commissioning (ATC) contractor, who verifies that the control system responds correctly and that performance meets the design criteria. The TAB team brings the field data—flow rates, damper positions, valve openings, pressures—and adjusts the system so the measured quantities align with design targets. The ATC team ensures the control sequences, sensor signals, and actuator responses are tested and validated, confirming that the system operates as intended under the measured conditions. Together, they provide accurate data, properly calibrated instrumentation, and verified control performance for handover.

Calibrating controls against measured air or water flows requires collaboration between the TAB contractor, who measures and balances actual flows, and the Acceptance Testing and Commissioning (ATC) contractor, who verifies that the control system responds correctly and that performance meets the design criteria. The TAB team brings the field data—flow rates, damper positions, valve openings, pressures—and adjusts the system so the measured quantities align with design targets. The ATC team ensures the control sequences, sensor signals, and actuator responses are tested and validated, confirming that the system operates as intended under the measured conditions. Together, they provide accurate data, properly calibrated instrumentation, and verified control performance for handover.