TSI Alnor 405-D AirGard Lab Hood Monitor, Measurement range is 70 to 250 fpm (0.35 to 1.27 m/s)

hello I'm Jim Schumacher product specialist for TSI L mower and airflow ventilation test instruments today I'd like to demonstrate the performance of the swirl X flow conditioner which is an accessory item for our pressure base capture hoods capture hoods are widely used in industry for making quick direct air flow measurements out of supply diffusers return grills and exhausts the swirl X flow conditioner has been specifically designed to address the turbulent airflow patterns that exit swirl or twist type diffusers without a flow condition air measurement errors up to about an exceeding 40 percent can be expected today I'm in our HVAC lab in which we have a swirl or twist type diffuser installed in our truck and our in our ductwork upstream of the diffuser we have a flow station that's given us the true or correct flow and in this case according my reference meter we're looking at abo