Pump-Drawn Sampling vs Passive Diffusion in Low-Airflow Spaces: Which Finds Leaks More Reliably?

When comparing Pump-Drawn Sampling vs Passive Diffusion in Low-Airflow Spaces, the most important difference is how the gas sample reaches the sensor. Passive detectors depend on gas moving naturally through the surrounding air and reaching the sensing element. Pump-drawn instruments actively move a controlled air sample to the sensor.