MEMS MASS FLOW METERS WITH IN SITU GAS COMPOSITION COMPENSATION

L. J. Huang, Y. Feng, K. S. Ling, W. T. Wong, M. F. Sham
Abstract:
Thermal mass flow meters for gas metering with complicated gas composition are often a challenge as it requires the real gas calibration. In many cases, particularly for gases with dangerous or harmful components the calibration is very costly and sometimes even not feasible for re-calibration at field. It is even worse that at the time gas composition varies, the calibration would be erroneous. In this paper, the design, theory and experiments for a MEMS thermal mass flow meter that is capable to dynamically compensate the gas composition variation during measurement are discussed. The meter can also provide in situ measured gas thermal values.
Keywords:
MEMS, thermal mass flow meters, gas composition
Download:
IMEKO-TC9-2013-077.pdf
DOI:
-
Event details
IMEKO TC:
TC9
Event name:
FLOMEKO 2013
Title:

16th International Flow Measurement Conference

Place:
Paris, FRANCE
Time:
24 September 2013 - 26 September 2013