Temperature Absolute humidity corresponds to Table 5

It is recommended to go to the laboratory to have a look.

There are all next to the hygrometer.

Or take a look at the books on physical chemistry.

This should be inaccurate. If the indoor temperature is heated, it is generally around 25 degrees Celsius, and the humidity is generally between 40 and 60.

Comparison table of temperature and humidity meter + principle of hygrometer - humidity: In the measurement law, humidity is defined as "the amount of the state of the object". The humidity referred to in daily life is relative humidity, which is indicated by rh.

This is the percentage of the amount of water vapor (water vapor pressure) contained in a gas (usually in air) and the amount of saturated water vapor (saturated water vapor pressure) when it is the same as its air.

Normal observations: Thermometer readings should be accurate. When the temperature is below 0, a minus sign ("-The reading should be recorded in the corresponding column of the observation book, and the deviation correction should be carried out according to the attached verification certificate.

If the indication exceeds the range of the certificate, the correction is based on the correction value of the highest (or lowest) temperature value listed on the certificate.

Attention should be paid to thermometer readings:

1. When observing, the line of sight must be flush with the top of the red alcohol column (or mercury column) to avoid parallax.

2. The reading action should be fast, strive to be agile, do not breathe into the thermometer, try to shorten the residence time, and do not make the head, hands and lamp close to the ball to avoid affecting the temperature indication.

3. Pay attention to re-reading to avoid misreading or reversing the error of zero up and down zero.

Summary. Hello dear! Glad to answer for you :

Relative humidity: The ratio of the actual water vapor pressure in the air to the saturated water vapor pressure at the same temperature, which is called relative humidity. The formula is f=e e is the water vapor pressure in the air at that time, and e is the saturated water vapor pressure at the dry bulb temperature at that time.

A pair of parallel thermometers for measuring air temperature and humidity, consisting of two mercury or alcohol thermometers of the same size. One of the balls is called a wet-bulb thermometer with moistened gauze, and a dry-bulb thermometer without gauze. When measuring humidity with a psychrometer thermometer, follow the formula e=et'-ap(t-t') and f=(e e)x100% This formula is a practical humidity measurement formula for psychrometer thermometers.

et'is the saturated water vapor pressure at wet-bulb temperature; a is the humidity measurement coefficient of the wet and dry gauge, which varies with the wind speed around the wet bulb; p is the air pressure at that time; t is the dry-bulb temperature; t'is the wet-bulb temperature. The error caused by measuring air humidity with a psychrometer thermometer is caused by t', t, p, or a-value.

Hello dear! Glad to answer for you: Relative humidity:

The ratio of the actual water vapor pressure in the air to the saturated water vapor pressure at the same temperature is called the relative humidity. The formula is f=e e is the water vapor pressure in the air at that time, and e is the saturated water vapor pressure at the dry bulb temperature at that time. A pair of thermometers and slag returns for a pair of parallel devices for measuring air temperature and humidity consist of two mercury or alcohol thermometers of the same size.

One of the balls is called a wet-bulb thermometer with moistened gauze, and a dry-bulb thermometer without gauze. When measuring humidity with a psychrometer thermometer, follow the formula e=et'-ap(t-t') and f=(e e)x100% This formula is a practical humidity measurement formula for psychrometer thermometers. et'is the saturated water vapor pressure at wet-bulb temperature; a is the humidity measurement coefficient of the wet and dry gauge, which varies with the wind speed around the wet bulb; p is the air pressure at that time; t is the dry-bulb temperature; t'is the wet-bulb temperature.

The error caused by the determination of air humidity by the wet and dry bulb temperature beam modulus table is caused by t', t, p, or a-value.

First, at a certain temperature, the higher the absolute humidity, the higher the relative humidity, and the more humid the air; The opposite is true.

Second, when the absolute humidity does not change and the temperature increases, the relative humidity decreases, and vice versa.

Third, if the relative humidity does not change, the absolute humidity increases when the temperature rises, and vice versa.

Absolute humidity is the mass of water vapor contained in a unit of air, it is a physical expression of the degree of dryness and wetness of the atmosphere, usually expressed in grams of all water vapor in 1 cubic meter, and the absolute humidity of the air can usually be expressed by pressure. Relative humidity, which is the percentage of water vapor pressure in the air compared to the saturated water vapor pressure at the same temperature. or the ratio of the absolute humidity of moist air to the maximum absolute humidity that can be achieved at the same temperature.

Characteristics of absolute humidity:

1. Absolute humidity refers to the weight of moisture contained in each unit volume of gas, which is generally used as an index. The relative humidity is the ratio of the absolute humidity to the water vapor content in the saturated state of that temperature, expressed as a percentage.

2. Absolute humidity refers to the actual value of the weight of water vapor contained in a unit volume of air. Saturation humidity refers to the limit value of water vapor per unit volume of air under certain air pressure and temperature.

3. Absolute humidity refers to the amount of water vapor contained in a unit volume of air at a certain temperature (mg). Relative humidity refers to the ratio of the actual water vapor content in the air acacia gas to the saturation value at a certain temperature, which is expressed as a percentage.