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.

ISA recently published the third edition of Calibration Handbook of Measuring Instruments by Alessandro Brunelli ... including two monographs relating to humidity measurement and flow measurement; a ...

Clouds of soot composed of particles of black carbon are extremely harmful air pollutants (in Finnish ... researchers working in the SootSense project are developing an instrument for measuring the ...