The development of micromachining MEMS/NEMS technology
has allowed for the development of low-cost, accurate and
smart sensors for scientific, industrial and consumer applications.
A review of the research and development in this field is presented
in Ref. [5]. This article contains an overview of physical principle
of flow measurement, and the basic information of the construction
and parameters of selected devices. One of the newer and
most interesting developments in MEMS area is the Temperature
Balanced Anemometry [6,7]. In this method the temperature difference
between an up-stream and a down-stream thermometer
is kept at zero level, by controlled distribution of heating power.
This method allows to obtain high-sensitive, low-drift flow sensor.
Publication [8] contains a comprehensive review of such a lowdrift
type of sensors. However, calorimetric sensors in most cases,
require calibration. Another interesting construction in the field
of MEMS flow sensor is a hybrid integrated thermal-microcoriolis
device [9]. This sensor covers ultra-wide dynamic flow range of
more then five decades.