How high is the temperature of the forehead gun before calling the police?

HI, which stands for high, means that the measured body temperature has exceeded the highest value of the human body temperature pattern. If it is not the setting of the thermometer, it is usually the quality of the product itself. The electronic thermometer shows HI, and the voice gives an error, because the wires inside are soldered in white, which is caused by poor contact for a long time and can be soldered again.

If HI is displayed, you need to check the calibration value of the product. For example, for Bekon's contactless electronic thermometer, you need to check the calibration function of F-4 and F-4. The default mode is "0.0℃". When the setting screen shows "F-4, 0.0℃", the calibration is set, and the measurement can only be carried out after confirmation and saving.

Extended data

Matters needing attention in purchasing electronic thermometer

First, power-on inspection

Turn the switch button to the on position, check whether the display mark is consistent with the manual, turn it on after disconnecting the power supply, and check whether the correct mark is also displayed. If the correct marks are the same and the underarm temperature is basically the same after many power on-off tests, it shows that the electronic thermometer has good repeatability. If the display is abnormal (the temperature difference is too large), it means that the battery of the electronic thermometer is exhausted, or there is poor contact somewhere.

Second, the accuracy check.

Press the switch button, and the "188.8" mark will appear on the LCD. Put the thermometer under the tongue 1 min. When the "C" sign stops flashing and there is a buzzer, the displayed reading is the body temperature, that is, the oral body temperature.

The oral temperature should be the same after repeated measurements. If it is not the same, the repeatability of the table is poor, so it cannot be selected, and there is no need to check the accuracy. If the oral temperature is exactly the same, you can measure the underarm temperature. When the "C" sign stops flashing and there is a buzzer, the displayed reading is the armpit temperature.

Similarly, the temperature under the armpit is the same several times. Generally, the oral temperature is about 1 degree higher than the underarm temperature. If the measured oral temperature is too much or too little higher than the underarm temperature, the accuracy of the electronic thermometer will not be satisfactory.

References:

Baidu encyclopedia-forehead temperature gun