Hand coffee thermometer pictures

In the experiment, 97 degree water brew coffee, filter cup on the edge of the highest temperature is only 73 degrees, brewing center estimation is only more than eighty degrees. Even just boiling water to make coffee, extraction temperature at the real, and have a gap in our imagination. Hand coffee water temperature in 88 ℃ ~ 93 ℃ or so commonly, the water temperature is too high, easy to bitterness, lack of water temperature is too low and easy extraction, appropriate temperature makes the taste of coffee is more good. So the thermometer in the application of the coffee is very popular. Instrument today to share a coffee the images of the thermometer. Such hand blunt bimetallic thermometer is a round shape into threaded heat bimetallic strip as thermal devices, and put it in a protective sleeve tube, one end is fixed, known as the fixed end, the other end of the connection on a thin shaft, called the free end. Spool at the free end is equipped with a pointer. When the temperature changes, the resulting thermal devices the free end of the rotation, drive the thin axis from the Angle of the pointer changes, corresponding temperature indicator on the dial.