B7.3 - Novel method for determination of gas properties and flow speed
- AMA Conferences 2015
2015-05-19 - 2015-05-21
- Proceedings SENSOR 2015
- B7 - Flow II
- C. Hepp, F. Krogmann - Innovative Sensor Technology IST AG, Ebnat-Kappel (Switzerland), G. Urban - IMTEK, University of Freiburg (Germany)
- 315 - 318
A novel method to determine the thermal gas parameters (thermal conductivity and the product of density and specific heat capacity) and flow speed are discussed in this contribution. We developed a procedure to use different time independent excitation modes for this purpose in contrast to other research groups who are using AC excitation. However, certain conditions have to be respected, they are examined in detail. The sensor design is based on a calorimetric flow sensor, thus a one chip solution is sufficient. Theoretical investigations and experimental data are presented.