Ultrasonic sensing of temperature of liquids using inexpensive narrowband piezoelectric transducers

Alzebda, S.; Kalashnikov, Alexander

doi:10.1109/tuffc.2010.1744

Cited by 16 publications

(20 citation statements)

References 25 publications

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“…Further experiments showed that the magnitude response of the closed signal loop was temperature dependant (Figure 4), like it was observed before for higher operating frequency [14]. Additionally, the measured responses exhibited two strong (above 5 dB) resonances around 25 kHz with a difference of about 1 kHz.…”

Section: Ultrasonic Temperature Measurements Using An Oscillating Sensorsupporting

confidence: 76%

“…The use of the first approach for measurements in deionised water is discussed in Section 2. Here we present experimental results that complement data reported previously [14]. The second approach uses a dipstick probe that contains a transducer and a reflector that are connected to each other.…”

Section: Physics Research Internationalsupporting

confidence: 73%

“…• C with a sensitivity of about 280 Hz/K at the central frequency of 328 kHz [14]. However, the distance used (30 mm, Figure 2) was not sufficient for many industrial pipes and vessels and the set of experiments reported here used a propagation distance of 190 mm instead.…”

Section: Ultrasonic Temperature Measurements Using An Oscillating Sensormentioning

confidence: 99%

See 2 more Smart Citations

Ultrasonic Measurements of Temperature in Aqueous Solutions: Why and How

Afaneh

Alzebda

Ivchenko

et al. 2011

Physics Research International

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The paper describes two different approaches to ultrasonic measurements of temperature in aqueous solutions. The first approach uses two narrowband ultrasonic transducers and support electronics that form an oscillating sensor which output frequency is related to the measured temperature. This low-cost sensor demonstrated sensitivity of about 40 Hz/K at the distance of 190 mm and the operating frequency of about 25 kHz. The second approach utilised pulse-echo mode at the centre frequency of 20 MHz. The reflector featured a cavity that was filled with deionised water. The ultrasound propagation delay in the cavity was related to the temperature in the solution. The experiments were conducted for deionised water, and solutions of sodium persulfate, sodium chloride, and acetic acid with concentrations up to 0.5 M. In the experiments (conducted within the temperature range from 15 to 30• C), we observed increases in the ultrasound velocity for increased temperatures and concentrations as was expected. Measurement results were compared with literature data for pure and seawater. It was concluded that ultrasonic measurements of temperature were conducted with the resolution well below 0.1 K for both methods. Advantages of ultrasonic temperature measurements over conventional thermometers were discussed.

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