

LEV (Local Exhaust Ventilation)
Calibration & Performance Testing
LEV calibration is the process of measuring, verifying, and adjusting the performance of a Local Exhaust Ventilation (LEV) system to ensure it effectively captures and removes airborne contaminants at the source. Proper calibration confirms that the system operates as designed and within acceptable performance limits, supporting workplace safety and regulatory compliance.
Calibration typically includes airflow and air velocity measurements, static pressure checks, hood face velocity assessment, and system integrity inspection.
GEV (General Exhaust Ventilation)
Calibration & Performance Testing
GEV calibration is the process of measuring, verifying, and adjusting the performance of a General Exhaust Ventilation (GEV) system to ensure it provides adequate overall air exchange and contaminant dilution within a workspace.
Calibration typically involves airflow rate measurement, air change rate (ACH) calculation, duct velocity and static pressure checks, and system balancing to confirm the ventilation system operates according to its design intent and applicable guidelines.

