When the thermometer is used for the first time, I feel that there is a deviation in the measurement temperature. What is the reason?
If you are using it for the first time, follow these steps:
Step 1: place the thermometer in a stable ambient temperature for more than 30 minutes;
Step 2: use the traditional mercury thermometer or electronic thermometer to measure someone, assuming a temperature of 36.8 degrees Celsius;
Step 3: use the non-contact infrared thermometer to measure the same person. Pay attention to the measurement distance and measurement method: keep the distance between the thermometer and the forehead between 1-3cm, remove any obstacles that may affect the measurement, such as hair, sweat, etc. if the same temperature is 36.8c, it means that the thermometer is set normally and can be used normally, such as If you get a lower reading of 36.4 degrees centigrade and a difference of 0.4 degrees centigrade, you can set F1 to "0.4 degrees centigrade"; otherwise, if you get more than 0.4 degrees centigrade, you can set F1 to "- 0.4 degrees centigrade".