The present invention relates to a coffee TDS / yield measuring device for measuring and outputting the TDS and the yield of the extracted coffee, the first weighing unit for measuring the weight of the ground coffee, and the first to measure the weight of the coffee extracted by the drip server 2 Weighing unit, the TDS measuring unit for measuring the TDS of the coffee extracted by the drip server, the weight of the ground coffee measured by the first weighing unit, the weight of the extraction coffee measured by the second weighing unit And a yield calculation unit for calculating a yield from the TDS value measured by the TDS measurement unit, and a display unit for displaying the weight of the ground coffee, the weight of the extracted coffee, the TDS value, and the yield. Weighing the coffee, measuring the TDS value from the extracted coffee, and automatically calculates and displays the yield from it, the user can easily and conveniently measure the concentration and yield of the coffee is an advantage have.
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