VAV CALIBRATION DURATION

[Kasim u tab]

Dear engineers
Site is under construction we are doing VAV Calibration now .after calibration how many days later need to do validation of these vas’s

Regards thanks

 

[EnergyProfessional]

You mean you calibrated the airflow station in VAV terminals?
Really depends on the type.....

I use the Accutrol VAV terminals and they have vortex-flowstations and they don't have to be field-calibrated or re-calibrated. Many use pitot-tubes. Those get dirty over time (or damaged etc.) and will drift off. They also use pressure sensors that will drift over time. Probably wouldn't hurt to verify flowrates every few years.