Digital moisture meter
A digital humidity meter is a device for measuring the amount of vapor in the air, which is called plain air in air, and a variety of humidity measuring devices should be used to measure all vapor and humidity dispersed in the air.
A digital humidity meter with a precision of 1% and even some devices can measure 1 tenth of a percent, which is a very important tool for measuring the humidity parameter in the industry, and measuring the exact amount is important. Digital moisture meter. Do you know to convert One gram of water is required to heat steam to about 545 grams of calories, and this amount of heat is absorbed from the surrounding environment.
For this reason, the evaporation of the hot or cold is evident. If the heat released in practice expands, the heat of the environment will increase or increase. The more warm the air is, the more water vapor can be stored in the air, but the supply of water vapor in the air is limited in any case. When water enters the air, it appears that it appears in the form of fine particles of water. In this case, air is said to be saturated with water vapor, which can be carried out on glass in cold weather with boiling water.
For example, when you walk in a swimming pool, the feeling of a cold you get is much longer than it was when it dipped in the water. This is because you are wet and the heat of the air causes the water to evaporate from your skin. Water molecules on your skin move at different speeds. The molecules are heated on the skin and move faster. Your inner heat is transmitted to the body so that the body cools down. That is why it is cold sweating. Similarly, a thermometer in wet conditions records a lower temperature than a thermometer in dry conditions. With this principle, you can measure air humidity.
Other products related to digital hygrometer measurements include the Humidity Meter and Solid Moisture Meter.
Solid Moisture Meter / Hygrometer:
A device used to measure and report solids' moisture content can be used to measure the moisture content of cereals, wood, gypsum, soil, paper and all building materials. Also, in some solid-state moisture meters, it is possible to measure PH, which helps to diagnose acidity. Also, in some (eg, hygrometer / grain moisture meter), there is a possibility to measure temperature in degrees Celsius and Fahrenheit. The unit of measurement of moisture can be expressed either by percentage or by scale from 1 to 100, which is different for each object than the other object.
Types of digital moisture meters
1- Digital Wall Humidifier:
Wall mounted wall moisture meter (wall moisture meter) or desktop use for measuring humidity and temperature in a confined environment such as a laboratory or hospital, office or work environment in the industry. Used. Usually these humidity gauges are equipped with their head sensors and can not be calibrated in some sensors.
2. Industrial and professional digital moisture meter:
In some industrial and professional models, moisture meters can calibrate temperature sensors and humidity. Also, in some models of moisture meter it is possible to record the maximum and minimum amount or set point for alarms. Depending on the type of robotic, the laboratory moisture meters can be separated into two groups: probe hygrometers and probe moisture meters.
3. Solid Moisture Meter:
Moisture meter, which measures the moisture content of solids such as soil, gypsum, wood, paper and concrete, is called a moisture gauge or a hygrometer. The gauges are divided into two categories:
1. Intrusive moisture meter: The solid-state moisture meter with destructive action measures the moisture content of the bodies by a pin-like pattern. In this way, the pins are inserted directly into the body (5 mm) and displayed graphically or numerically after measurement.
2. Non-destructive (non-penetrating) non-destructive non-destructive non-destructive hygrometer: A non-destructive ultrasonic solid state moisture meter performs measurement.
Relative Humidity Measurement Methods:
Direct Humidity Measurement:
Direct measurement of moisture is based on devices that can directly measure relative air humidity. Devices that are sensitive to air humidity are very sensitive to changes in air humidity and some of the physical parameters of the material (such as length, resistance, surface, etc.) are made in different ways, and some of them Are described.
One of these moisture gauges, which is called a hydrograph, is known to be used in aeronautical stations. Based on measurements of the length of the sex change, a certain type of human hair works. In this device, a human hair string is given from 10 to 100 longitudinal sections. Due to the change in humidity, the length of the hair is changed due to the small weight attached to the lever. The device is introduced as a thermohydrographer. Another type of moisture meter is the device that acts on the basis of a change in the area of a certain level of the frog skin (which is stretching), and is similar to the one used in the textile industry, where the measurement and control of moisture is of particular importance. There is a lot. Other devices that are in these groups are thermodynamic thermodynamics. Thermohydrometry digital has a sensor that changes the air flow by changing the air flow. The amount of electrical current is proportional to the amount of air humidity. The thermohydroMeter has a great deal of use in measuring the humidity of the air in front of the ventilation openings of the ventilation system, as its name implies, To measure moisture and humidity.
Indirect Humidity Measurement:
In this method, by measuring the two parameters of the temperature of the dry rotating thermometer and the rotary thermometer, the relative humidity is determined by means of relations, tables, ruler and dynamometer, and the linearization and diagram are the most widely used. Dry thermometer and thermometer are rotated, relative humidity is determined by means of relationships, tables, rulers and charts. In measuring the dry and wet temperature, it is necessary to pass the forced air flow at a speed of 2.5 m from the surface of the sensitive section of the temperature gauges. To do this, the Moisture Meter is designed in such a way that two dry and wet thermometers are placed next to each other and the desired air speed is passed through the surface of the reservoir.
Moisture meters acting on this basis are in two ways:
1. Whiring Hygrometer:
It consists of two thermographs, one of which is covered with a water-cooled water vapor and is used as a thermometer (along with a rotary moisture meter with a reservoir and without a reservoir) and is a unit that can It can move around the axis of the arm, and provide the necessary ventilation at the reservoir level, which is a sensitive part of the thermometer.
2. Assman higromete:
The difference between the humidity meter and the rotary humidity meter is that it flows through the reservoir of the thermometer through a suction air flow using a wind that acts after cooking. Additionally, Hand-damp and there is no water tank. The fan in this humidifier provides airflow at a uniform rate (2.5 m / s) at the surface of the thermometers.
To select the humidity meter, the following should be noted:
1- Sufficient moisture meter
2- How to install a humidifier
3- Ability to calibrate the humidity sensor
4- Ability to record values in moisture meter
5. Separate or separate probe
Application of Digital Moisture Meter in various industries
The presence of moisture meter in various laboratory and home environments and uses such as poultry, in the incubation and greenhouse, and in the cultivation of mushrooms is very important, for example, during the cold season, it is very important to know the humidity of the place of residence, and if it is dry, the air causes the appearance The respiratory problems also cause a lot of other moisture problems. The ambient humidity meter can measure and control moisture. Measurement of the humidity of the environment and materials in many cases, including warehouses, food industry, especially in industrial processes.
Always having a reliable thermometer and humidity gauge that gives us definite numbers is an essential tool in agriculture and horticulture. Many conditions are influenced by these two factors, namely, temperature and humidity, and a farmer or gardener must have the right tools to carry out the breeding programs. This digital thermometer has the ability to record and store the maximum (maximum) and minimum (minimum). This option gives you the ability to understand past events that are usually important to you.
Soil Moisture Meter can be used to identify the moisture content of wood, walls, or other building materials to prevent damage caused by excessive moisture or water and moisture. Moisture gauges were used in furniture manufacturing and refurbishing factories, wood drying factories, building inspecting and pest control, coal moisture control to accurately measure weight, and so on.
The overall application of the thermohydrometer (thermometer / humidity meter) is as follows:
- Environmental analyzer
- Control and supervision of places and places of food storage
- Computerized computer work environments
- Control of gas processes in factories
- HVAC applications (maintenance and repair)
- Calibration laboratories
Digital Thermometer: A sensor that generates electric current due to changes in humidity. The amount of electric current is proportional to the humidity in the air. This device is widely used in measuring air humidity in front of a ventilation fan.
Types of Digital Moisture Meter and its Application (Digital humidity meter)
To measure moisture, the amount of vapor in the air, expressed as relative humidity, absolute humidity and dew point, is examined. Digital moisture meter has digital desktops, professional digital moisture meters and solid state humidity gauges. On the other hand, a digital moisture meter is divided into two types: probe hygroscopy and hygrometer, and, on the other hand, a solid moisture gauge (Hygrometer) is also divided into two categories of destructive moisture meter and non-destructive hole moisture meter.
Atmospheric air is a mixture of various gases, water vapor and a variety of gases. Regardless of the pollutants that are very different from place to place, the combination of dry air is relatively constant and varies briefly with respect to time, location and height. In practice, air is a mixture of dry air and water vapor. The amount of water vapor may vary from zero to a maximum value that is a function of the temperature and pressure of the mixture. The amount of vapor in the air is known as humidity. In measuring moisture, knowing some of the following definitions is useful.
Relative Humidity: The ratio of water vapor in a given volume of air at a specified temperature t to the maximum water vapor content that can be of the same volume at a temperature of t is called relative humidity, which is mentioned in meteorology and in everyday life.
Absolute Moisture: The amount of water vapor in the volume unit of the air is called absolute humidity. Its units are grams per cubic meter or milligrams per liter.
Dew Point: If the temperature reaches a degree at which the assumed air is saturated with 100% of the water vapor (constant pressure), such a degree is called the dew point, or the dew point is the temperature at which the vapor of the condensed air Gets This parameter is widely used in the meteorology, chemistry and electronic assembly industry. In the choice of instrumentation, the first factor that matters is, as its name suggests, its precision. The unit for measuring moisture is different for different objects. The moisture content of some substances can be indicated by% and for some others we use 0 to 100, which is 100 maximum moisture content and 0 is the minimum moisture content. A number of devices make it easy for the user to use a dry, wet, wet, dry index, but in general, the moisture content is usually expressed as a percentage of the readings or the total instrumentation ranges as percentage (in RH%) Technical information comes from the equipment. Devices that measure humidity are typically a dial that can not be maneuvered on it, but in digital form, a more accurate amount of moisture, temperature, and dew point can be measured and, if moisture is reduced / increased, turn on the device And turned off.
Also, humidity can be indicated by a number of temperature dependencies:
Dew point temperature (Td)
The temperature of the dew point is a temperature that the air should be cooled to reach the saturation level to the surface of the water. In this process, the humidity pressure P and the mixing ratio r remain constant. It should be noted that in this process the air pressure is constant and no water vapor is added to the sample or is not removed from it. Therefore, the ratio of air mixing is constant. However, the air reaches saturation at dew point temperature, and so the amount of mixing ratio is equal to the saturation mixing ratio at this temperature. The relative cooling of the air near the ground during the night may bring the temperature to the dew point. After cooling down, it causes a condensation of water vapor. In fact, this is the main process of dew formation.
Ice Dew Point Temperature (rf)
The frosty dew point is a temperature that is humid so that the temperature is cooled to allow it to be saturated in the vicinity of the ice. In this process, the pressure of the wet air p and the mixing ratio r remain constant.
Higher temperature (tw)
The higher the temperature is the lowest temperature that the air package can withstand at constant pressure due to evaporation of water without it. The heat of the water needed to evaporate the air from the dry air in the air package. Evaporation can not be performed if the air is initially saturated and thus does not cool down the environment. In this case, the upper temperature of the saturated air is equal to the temperature of the air (dry and wet temperatures and dew point are equal). If the air is initially unsaturated, the mixing ratio will increase as a result of evaporation of the water without air. In such a case, such air with compressed air is more saturated than the initial state. Therefore, the temperature is higher than the dew point of the initial air temperature. The difference between the air temperature (the order is dry temperature) and the higher the temperature is called the lower the temperature is called. The higher the temperature is, the higher the air is.
The TFA's humidity gauge is a high quality, calibrated humidity gauge.
The background of this black moisture meter and its numbers, degrees, and handwriting are white, which makes reading the degree and humidity easy for the user. There are two indicators for the optimum humidity range that limits moisture content between 40% and 70%.
To prevent corrosion and rust in the body, this black plastic moisture meter is used, and this moisture meter is produced using the finest grade materials.
In the field of laboratory supplies, especially thermometers and humidity gauges, German and Japanese brands have always been leading and user-friendly, and TFA (Germany) is also one of the leading manufacturers of laboratory supplies and moisture meters that test their moisture meter for users. It is well-received and one of the most popular moisture meters in the Iranian market.
This moisture meter has an ambient humidity of 0 to 100%, with an error rate of about 2%, and you can calibrate it for accuracy at authorized centers to work with maximum precision.
The packaging is a cardboard and monolithic handwriting moisture meter that monolith is placed around the moisture meter to prevent physical damage.
These humidity gauges are also known by other names such as: Humidity humidity meter, HYGRO Humidity meter, TFA analogue humidity meter, German humidity meter, ambient humidity meter and analog moisture meter.
Use of this analog moisture meter
This analogue humidity gauge is a simple, low-cost, high-precision humidity monitor that can be used at home, in the workroom, at sports halls, mushroom breeding, poultry houses, incubators, greenhouses, and wherever it is needed. Sensitive Moisture Meter, and take advantage of it.
What is the strength point of this German moisture meter?
One of the strengths of this moisture meter is the following: high precision, durability and longer life than digital models, easy to use, so that everyone can easily understand its function, proper dimensions of the screen and its handle, two-color design Backgrounds and degrees for better reading on it, saving on long life and no need for battery because of its analogy, its very low price against its high precision and quality