How much do you know about maximum and minimum thermometer?

May have heard of thermometer, a lot of people are the most familiar is the bimetallic thermometer, in addition to the bimetallic thermometer, pressure type thermometer, electronic thermometer, etc in the life is also very common thermometer, but the maximum and minimum thermometer you know? Estimates that everyone is not very understanding, the following will introduce you to: dedicated to the determination of the equipment that the highest temperature within a certain period of time interval is called supreme thermometer, with the Maximum identification, the structure of the thermometer and ordinary thermometer basic same, Minimum thermometer with the Minimum identification, it is thermal fluid with alcohol, main form of the general thermometer. Tube into the mercury and colorless alcohol respectively, because alcohol and mercury disparity expansion coefficient, when the temperature rises, alcohol, then to capillary force mercury and rising, the pointer also subsequently and rise, leading to the highest temperature; When the temperature drops, mercury back into another tube, to push the pointer to the lowest temperature. Usually hang the minimum thermometer flat screen, when out of the observation, as long as it takes up and down vertical moment, alcohol column in the pointer will slowly settling, until the alcohol concave contact, you can hang it again back to the screen, for the next observation. Maximum and minimum thermometer is generally used in what place? Maximum thermometer generally used in steel furnace or nuclear reactors, to detect the working condition, or used as a scientific experiment. Low thermometer, north and south poles is low enough, but the lowest for scientific research, such as absolute zero. All know that the above content, but its method of use until? When use the vertical first press the button of this form, will be two blue flag to mercury capillary, where the air circulation, temperature observation time, visible to decide, when the observation records indicating needle referred to in the bottom and temperature. As can be seen in the day of the highest and lowest temperature.