1. The measured value is obviously inconsistent with the actual body temperature: If the body temperature value measured multiple times by the electronic thermometer is significantly different from your actual feeling or other reliable thermometer measurement results, then calibration may be required.
2. Unstable measurement results: The electronic thermometer measures the same part multiple times in a short period of time, and the body temperature value obtained fluctuates greatly and is unstable. For example, after several consecutive measurements, the results differ by more than 0.5℃ each time.
3. After replacing the battery: When the battery of the electronic thermometer is replaced, it may affect its measurement accuracy, so calibration can be considered after replacing the battery.
4. The use environment changes greatly: If the electronic thermometer is brought from a place with a large temperature environment difference to another place for use, or the ambient temperature, humidity and other conditions change significantly during use, it may cause inaccurate measurements. At this time, it can be calibrated. For example, use an electronic thermometer to measure body temperature immediately after entering a warm room from a cold outdoor.
5. Long-term non-use: The electronic thermometer has not been used for a long time. When it is used again, it may need to be calibrated to ensure the accuracy of the measurement.
6. Suspect that there is a problem with the thermometer: If the electronic thermometer has been hit, dropped or otherwise damaged, or if any abnormal situation occurs during use (such as flickering display, button failure, etc.), it is best to calibrate or check it even if the measurement results look normal.
