The Air-Trak Model 628S was originally designed to work specifically with Sierras Model BG-3 engine emissions sampling system as an extremely fast, accurate, and repeatable engine air intake mass flow meter. However, the instrument has proven to be an excellent solution across the board in all engine testing applications.

Air-Trak is specifically designed to measure engine air intake mass flow rate. The meter uses Fast-Flo Sensor Technology for an extremely fast 200 millisecond response-time making it ideal for the toughest transient test cycles.

Integral Dual-Plate laminar flow conditioning elements and wide 15:1 turndown make Air-Trak a flexible solution for the constrained piping environments commonly found in todays engine test cells.