Hua'an main produces fast reading digital thermometer
Digital thermometer readings quickly and accurately , the error is about 0.7 degrees Fahrenheit. When people would flip out its stainless steel probe within three seconds to start reading it , it is equipped with a professional thermocouple elements , very accurate readings .
Because it becomes fast reading , so people in the measurement temperature , it is not necessary to be parked on the food or oven . Previously some older , cheaper thermometer needs 30 seconds to determine the reading , so often leads people to cook steaks are cooked too far. In addition to fast and accurate readings of this thermometer outside , it has another advantage in that it is a small stainless steel probe , such a small probe when measuring the temperature of the barbecue to avoid leaving a big hole in the top .
The first thermometer in 1593 by the Italian scientist Galileo Galilei ( 1564 - 1642 ) invention. His first one thermometer is a glass tube open at one end , the other end of the glass bulb with a large walnut . Give glass bulb when using heated water is then inserted into the tube . As the temperature changes, the glass tube will move up and down in the water , according to the number of the mobile can determine the temperature changes and temperature level . Thermometer, thermal expansion and contraction of the role it has a greater impact this thermometer , by external environmental factors such as atmospheric pressure , the measurement error is larger .