Do you know how to use the right surface thermometer?

Observe its range & ndash; — To measure the temperature range. If estimated to measure the temperature of the beyond, the highest temperature it can measure or less than the minimum temperature, it can be in with a range of appropriate thermometers, otherwise will likely liquid in the thermometer thermometer burst, or measured temperature value. Identify the smallest scale value of it, in order to use it can be read quickly temperature measurement. All the glass bulb thermometer into the liquid being measured, don't touch the bottom of the container or the container wall. Glass bulb thermometer immersed in liquid after being tested to wait for a while, after waiting for thermometer readings stable reading again. When reading glass bulb want to remain in the liquid being measured, the line of sight and flat on the thermometer liquid column in the table above face. In operation, there are several incorrect on the surface of the usage of the thermometer: 1) Not hot end temperature measurement. The pipe don't answer the thermometer joint; Some have a thermometer joint, but don't put thermometer; 2) No thermometer connection, just put the thermometer bound on the pipeline directly measuring temperature; 3) Put thermometer intubation directly outside of the pipe wall and the temperature measuring parts not in contact with the medium; 4) Although the thermometer dowel into the fluid pipe, temperature measuring parts still cannot contact with the medium; 5) The thermometer itself, the temperature of the gas measured regurgitation is higher than the air temperature, hot end temperature difference is negative, also did not find the problem; 6) When the temperature is measured, and put the thermometer pulled out from the inside of the casing reading again. Above is the use of surface thermometer, the hope can bring convenience to your use.