This is the DBM610 Air Flow Capture Hood Balometer and is the next generation of air flow capture hoods. It can be used on any exhaust or supply or air distributors- helical, toric or rectilinear.
The DBM610c option includes all flow hoods. Supplied with 5 hoods: 610x610 mm, 720x720 mm, 720x1320 mm, 420x1520 mm, 1020x1020 mm, calibration certificate and transport case.
A balometer allows you to quickly and easily measure the air flow at grilles and diffusers. These are the supply and exhaust points of HVAC systems. Balometers are designed to fit over the grille or diffuser, seal around it, and read an average velocity across several measurement points in this cross-section of known dimensions.