Of glass liquid thermometer in the use of error sources in which aspects?

Glass rod liquid thermometer in use due to improper use or other willing, will cause a certain measurement error, in order to reduce the measurement error, should understand the error source of glass liquid thermometer, can correctly use the thermometer, in order to achieve the purpose of accurately measuring temperature. Made of glass liquid thermometer for temperature measurement, the measurement error comes mainly from the following six aspects. （ 1) Reading error when reading a thermometer in value refers to the square with the line of sight to scale line, if the line of sight and to be read the thermometer calibration is not in the same level, which can produce parallax. （ 2) Scale error refers to the scale of thermometer gauge plate and often because of the different expansion coefficient between capillary, certain small displacement. （ 3) Error brought by the liquid column in the process of lifting is refers to the thermometer in the process of heating up, the mercury in the capillary appeared & other Broken column & throughout; 、“ Sublimation & throughout; And & other; The hanging wall & throughout; Such as measurement error. （ 4) Non-linear error is to point to the capillary pore diameter of the thermometer is not uniform, and the error. （ 5) Refers to the zero point of the thermometer appear zero zero error relative to the zero mark line of the error caused by rising or falling. （ 6) Lag error refers to the thermometer itself caused by thermal inertia and thermal capacity and the thermometer thermometer itself the error caused by the heat conduction different benchmarking.