Calibration of ultrasonic power output in water, ethanol and sodium polytungstate
 
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1
Department of Forest and Soil Sciences, Institute of Soil Research, University of Natural Resources and Life Sciences, Peter-Jordan-Str. 82, 1190 Vienna, Austria
2
Department of Material Sciences and Process Engineering, Institute of Physics and Material Sciences, University of Natural Resources and Life Sciences, Peter-Jordan-Str. 82, 1190 Vienna, Austria
Publish date: 2017-10-24
 
Int. Agrophys. 2017, 31(4): 583–588
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ABSTRACT
Ultrasonic power is the main variable that forms the basis for many soil disaggregation experiments. Thus, a procedure for the rapid determination of this variable has been developed and is described in this article. Calorimetric experiments serve to measure specific heat capacity and ultrasonic power. Ultrasonic power is determined experimentally for deionised water, 30% ethanol and sodium polytungstate with a density of 1.6 g cm-3 and 1.8 g cm-3. All experiments are performed with a pre-selected ultrasonic probe vibration amplitude. Under these conditions, it was found that the emitted ultrasonic power was comparable in the four fluids. It is suggested, however, to perform calibration experiments prior to dispersion experiments, since the used fluid, as well as the employed ultrasonic equipment, may influence the power output.
eISSN:2300-8725
ISSN:0236-8722