How to ensure the accuracy of electric constant temperature incubator?

With the continuous development and improvement of detection methods for industrial production, medicine, medical and health, and engineering quality inspection industries, the requirements for temperature indicators are getting higher and higher. For example, for electric constant temperature incubators, not only the temperature field is uniform, but also the fluctuation is reasonable. The temperature deviation requirement is extremely strict. This requires us not only to guide companies to properly use the electric constant temperature incubator, to ensure its accuracy, but also to improve its accuracy. In the actual on-site temperature field test process, in order to eliminate the error brought about by the measurement results, and also a true and reliable measurement result, we will talk about how to reduce the error of the measurement of the temperature field in the following points.

Before the measurement, we introduce several concepts about the temperature field. Electric heating constant temperature incubator working area: In the steady state, it meets the constant temperature incubator temperature uniformity and temperature fluctuations in the area. Incubator temperature uniformity: In the steady state, the difference between the highest temperature and the lowest temperature in the constant temperature incubator working area. Incubator temperature fluctuation: In the steady state, the incubator working area within a certain time interval, the range of temperature changes. Incubator temperature deviation: In steady state, the electrothermal incubator shows the difference between the temperature and the actual temperature at the geometric center of the workspace.

The following step by step how to improve the use of electrothermal temperature incubator temperature field accuracy. First, the components of the primary heating element and the temperature display instrument of the electrothermic incubator are tested, and the correction values ​​of the corresponding measurement temperature points are given. This eliminates the combined errors introduced by the primary and secondary temperature instruments. Because the position of the temperature measuring element is different from the working geometric center of the working field of the temperature field, the system error naturally occurs. We measured and corrected the difference between the temperature at the geometric center of the workspace and the temperature at which the primary element was located, thus avoiding errors due to the temperature measurement element not being in the geometric center. In the temperature field test, the error caused by the standard device should also be considered, that is, the error caused by the standard device should also be corrected. The electrothermal incubator is mainly a temperature indicator, so the accuracy of temperature control also directly affects the accuracy of the temperature field. Even if the temperature indicating error of the temperature indicating instrument in the electric constant temperature incubator is 0, if the temperature control precision is not high, the temperature control point deviating temperature also causes the temperature field to run out of control. Therefore, setpoint errors for each temperature control point should be given and corrected. To sum up, to improve the accuracy of the use of electrothermal incubators, the above error sources should be corrected.

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