What should I pay attention to when measuring temperature?

When measuring the temperature, pay attention to the following items:

1, because the thermometer itself absorbs more solar heat than air, and the reading indicated under direct sunlight is often higher than the actual temperature of the surrounding air, so when measuring the air temperature near the ground, the thermometer is generally placed in a louver box with ventilation on all sides about 1.5m from the ground.

2. If the thermometer needs to be taken out of the water for reading, the time from the thermometer leaving the water surface to the completion of reading should not exceed 20s. Thermometers should have an accurate scale of at least 0. 1C, and the heat capacity should be as small as possible to achieve balance. At the same time, the metrological verification department needs to use precision thermometers for regular calibration.

3. When measuring the water temperature temporarily, the probe of the glass thermometer or other temperature measuring equipment should be immersed in the water to be measured for a certain period of time (generally more than 5 minutes), and the data should be read after reaching the balance. The temperature value is usually accurate to 0. 1 degree Celsius .. In sewage treatment plants, an online thermometer is usually installed at the inlet end of the aeration tank, and the thermometer usually uses a thermistor to measure the water temperature.

The related introduction of temperature is as follows:

The temperature mentioned in the weather forecast refers to the air temperature measured in the open air without direct sunlight (usually measured by blinds). The highest temperature is the highest temperature in a day, generally appearing in14-15; The lowest temperature is the lowest temperature in a day, usually before sunrise.