ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
The effects of thermal loading on the measurement of gas pressure during combustion and cool down of a constant volume reactor, 25 to 〉1000 ms, and the methods to reduce these effects were investigated. Four piezoelectric pressure transducers—a Kistler 6121, a Kistler 6123, a Kistler 603B, and an AVL 8QP500c—were tested with four levels of thermal protection: (1) no protection; (2) RTV placed on the front of the transducer; (3) the transducer placed behind a flame arrestor to prevent the flame from reaching the transducer with no RTV; and (4) the transducer behind a flame arrestor with RTV on the front. The results show that the application of RTV to the front of the transducers significantly reduces the differences between the pressure traces recorded by the Kistler 603B and traces recorded by the Kistler 6121, the Kistler 6123, or the AVL 8QP500c. However, the effect of RTV on reducing the differences made between the Kistler 6121, the Kistler 6123, and the AVL 8QP500c is minimal. Placing the transducers behind flame arrestors with "good'' gas exchange properties resulted in four indistinguishable pressure traces recorded by the four pressure transducers.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1137991
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