Measuring air flow in an HVAC duct can be a tricky business. Paddle wheel and turbine flow meters introduce not only resistance but maintenance issue due to accumulated dust and debris.

This temperature differential is directly proportional to the mass flow measurement. All thermal mass flowmeters ... calibrations use a reference or surrogate fluid, typically air, at ambient ...

Related Stories A compact, low cost solution, the ST75 Flow Meter Series offers the advantages of direct mass flow measurement of air and gases. These in-line (spool-piece) style flow meters have ...

MicroTrak has a special valve orifice design and an improved sensor technology that allows accurate measurement and control of mass flow rates earlier considered by scientists to be extremely low for ...