The color change in the Sonocheck vials occur as a result of a sonochemical reaction that are initiated by the acoustic energy from the U/S cleaning tank. Process parameters that affect this reaction include sonication time, generator power, frequency, and temperature, gas concentration, loading, position, etc. Because many of these parameters are uncontrolled, the color change results may vary.
This experiment makes two comparisons.
1. How the colored vials compare with hydrophone measurements?
2. How the color change varies with generator power?
The test conditions are as follows:
• Tank Frequency: 45 kHz
• Generator Power: 10% and 50%
• Medium: tap water
• Temperature: 25 deg C
• Dissolved O2: 9.1 mg/L
• Position: center, 13 cm from bottom surface, fully submerged
• Measurement Parameters:
– R, G, B signals (0-255 scale)
– Total Pressure (kPa)
The two videos of the vials on TOP are recorded at 10% power (top-left) and 50% power (top-right). The color change at 10% power occurred after ~1550 sec, while the color change at 50% power occurred after ~230 sec.
In contrast, the two videos of hydrophone measurements on the BOTTOM immediately indicate an acoustic pressure of 11 kPa at 10% power (bottom-left) and 74 kPa at 50% power (bottom-right).
Additional details of the experiment, as well as other resources, can be found here: [ Ссылка ]
