Bimetallic thermometer why have error?

With the improvement of quality of life, people have a standard about anything, instrument and meter industry, too, for thermometers, measuring temperature, to achieve high accuracy, has become an important symbol to measure the level of. Thermometer is an error to use, the scope of the error range, the error of the bimetal is 1%, why have error? Can produce error what factors? More and more people are using bimetallic thermometer, especially in industrial field, because the working temperature is an important factor affecting the operation of equipment accurately, so the bimetallic thermometer is plant, machinery and so on standard operation. Previous production to temperature measurement requirements is not high, in the process of using the way of the thermometer, the method is not specification. If not timely improvement, can not meet the requirements of production, therefore, the correct measuring temperature is particularly important. So, the accuracy of the thermometer will require very high, so the precision of the bimetallic thermometer is influenced by what factors? First, insert the depth of the probe, have great influence on precision. So, in the use of bimetallic thermometer, attention should be paid to the size of the insert and the probe of close contact, can make the measurement data is accurate, true and reliable. Second, the response time of the thermocouple. When measuring temperature, will have to wait for the temperature after reaching a stable value, in reading, at this point temperature is accurate. Thermocouple response time of the fast changing with temperature, that is, reflect its sensitivity, so, short response time, error is small. May be a lot of people at the time of purchase of bimetallic thermometer is the most concerned about is the choice of the bimetallic thermometer with the working principle of the bimetallic thermometer these is very important for users, but the most important thing is to customers consider accuracy problem, so, the above two factors affecting the precision of ow attention should be paid, pay special attention to in the process of using.