Which two devices are generally calibrated together in air testing?

Prepare for the ABAA Whole-Building Airtightness Testing Level 1. Master the concepts with various study materials including flashcards and practice questions. Get ready to ace your exam effortlessly!

In air testing, particularly in the context of whole-building airtightness testing, it is essential to have accurate and consistent measurements of pressure and airflow to ensure reliable results. The pressure gauge and airflow measuring device are typically calibrated together because they are interrelated in assessing the airtightness of a building. The pressure gauge measures the pressure differential across the building envelope, while the airflow measuring device quantifies the amount of air passing through leaks or openings in that envelope.

Calibrating these two devices together ensures that the readings are synchronized and that any changes in pressure measured by the gauge correspond accurately to the airflow readings obtained, allowing for precise calculations of air leakage rates. This calibration helps maintain the integrity and accuracy of the testing process, leading to reliable data that can be used for evaluating the building's performance regarding energy efficiency and indoor air quality.

In contrast, other devices mentioned, such as the barometer or thermal camera, serve different purposes and do not have the same direct relationship in measuring air leakage.

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