DESIGN OF A MULTI-TUBE VORTEX MIXER WITH ROTATION SPEED AND TIME SETTINGS

Abstract

A vortex mixer is a laboratory device used to mix solutions in small tubes homogeneously, but it can generally mix only one tube at a time. To improve laboratory work efficiency, a device was designed and constructed that mixes multiple tubes simultaneously. The purpose of this study was to design a practical and efficient multi-tube vortex mixer with motor speed and time settings via an LCD touchscreen, and to display the motor speed in real Time using an optocoupler sensor. Testing was conducted to assess the accuracy of the RPM reading from the optocoupler sensor, and the results showed that the device could produce motor rotation close to the tachometer reading. In the time accuracy test, an average error of 0.45% was obtained with an accuracy of 99.55%. Additionally, testing with a load showed that the tube load improved motor rotation stability. The optocoupler sensor also displayed real-time RPM values, with a difference of 28 RPM at 500 RPM. Overall, this device has been successfully developed and used for laboratory purposes.