DELMHORST hygrometer P-2000, USA*

DELMHORST hygrometerP-2000 USA *: Delmhorst hygrometer - humidity control solution! Professional portable hygrometer, used for measuring the humidity of wood, building materials, flooring, hay, grains, seeds, cotton, paper, cards, leather, and many other items. Delmhorst, *Design, develop, and manufacture hygrometers for the market. Dedicated to production and advanced services. Enhance your professional skills with our humidity measurement skills.
DELMHORSTInstrumentCo is a well-established company in the world that produces various moisture measuring instruments. The company was founded in 1949 and has nearly 60 years of experience in producing moisture measuring instruments. DELMHORST company enjoys a high reputation in the field of designing and producing high-quality humidity detection instruments in the world today. Initially, DELMHORST provided moisture measurement instruments for measuring walls and roofs to customers in New York, USA. Today, DELMHORST's products have covered many industrial fields and are used in various moisture measurement applications, becoming the leader in this field. DELMHORST company specializes in producing various moisture meters, thermometers, and hygrometers, which are widely used in fields such as wood, paper, chemical, stone, food, construction, cotton, grains, and soil.
Types of DELMHORST hygrometers in the United States
1. Hair hygrometer: The length of hair and certain synthetic fibers varies with the relative humidity of the surrounding gas: the higher the relative humidity, the longer the length. Using this principle, a hair hygrometer can be made, and when the length of synthetic fibers changes with relative humidity, the position of the pointer will be changed through a mechanical transmission mechanism. This hygrometer has a simple structure and is widely used in meteorological measurement. 2. Lithium chloride hygrometer: The detection element of this hygrometer has a thin layer of lithium chloride coating on its surface, which can absorb water vapor from the surrounding gas and conduct electricity. The higher the relative humidity of the surrounding gas, the greater the water absorption rate of lithium chloride, resulting in a lower resistance between the two electrodes. Therefore, the magnitude of the current through the electrode can reflect the relative humidity of the surrounding gas. This type of hygrometer is widely used in industrial processes. 3. Wet and dry bulb hygrometer: A typical wet and dry bulb hygrometer consists of two adjacent, identical glass thermometers, one of which has a nylon mesh cover on the outer surface of the temperature bulb, with the other end of the mesh cover immersed in water. Due to capillary action, the mesh around the temperature pack remains moist at all times. When the surface moisture of the mesh evaporates, it absorbs heat, causing the temperature of the mesh to decrease. So, the temperature indicated by this thermometer (called a wet bulb thermometer) is lower than the temperature indicated by another thermometer without a mesh cover (called a dry bulb thermometer). The lower the relative humidity of the surrounding gas, the faster the evaporation of water from the mesh cover, resulting in a greater decrease in temperature. Based on this temperature difference and dry bulb temperature, the relative humidity of the surrounding gas can be determined from the reference table attached to the instrument. This hygrometer has a simple structure and is mainly used for meteorological measurement and indoor air humidity measurement. 4. Aluminum oxide hygrometer: Its working principle is that the aluminum oxide film can absorb water from the surrounding gas, causing changes in its own capacitance and resistance values. The magnitude of the changes is used to indicate the relative humidity of the surrounding gas.DELMHORST hygrometerP-2000 United States *; This hygrometer is mainly used for measuring the humidity of industrial process gases, and can measure a wide range of relative humidity.
Lithium chloride hygrometer
The detection element of this hygrometer has a thin layer of lithium chloride coating on its surface, which can absorb water vapor from the surrounding gas and conduct electricity. The higher the relative humidity of the surrounding gas, the greater the water absorption rate of lithium chloride, resulting in a lower resistance between the two electrodes. Therefore, the magnitude of the current through the electrode can reflect the relative humidity of the surrounding gas. This type of hygrometer is widely used in industrial processes.
Hygrometer, dry wet bulb hygrometer
A typical dry wet bulb hygrometer consists of two identical glass thermometers located adjacent to each other. One of the thermometers has a nylon mesh cover on its outer surface, with the other end of the cover submerged in water. Due to capillary action, the mesh around the temperature pack remains moist at all times. When the surface moisture of the mesh evaporates, it absorbs heat, causing the temperature of the mesh to decrease. So, the temperature indicated by this thermometer (called a wet bulb thermometer) is lower than the temperature indicated by another thermometer without a mesh cover (called a dry bulb thermometer). The lower the relative humidity of the surrounding gas, the faster the evaporation of water from the mesh cover, resulting in a greater decrease in temperature. Based on this temperature difference and dry bulb temperature, the relative humidity of the surrounding gas can be determined from the reference table attached to the instrument. This hygrometer has a simple structure and is mainly used for meteorological measurement and indoor air humidity measurement.
Humidity meter, alumina humidity meter
Its working principle is that the alumina film can absorb water from the surrounding gas, causing changes in its own capacitance and resistance values, and the magnitude of the changes is used to represent the relative humidity of the surrounding gas. This hygrometer is mainly used for measuring the humidity of industrial process gases, and can measure a wide range of relative humidity. [1]
DELMHORST hygrometer P-2000, USA*The humidity of the air can be simply understood as the degree of humidity in the air. It can be divided into humidity and relative humidity
1. Humidity: The pressure P of water vapor in the air is called the humidity of the air
The humidity of the air can be expressed by the density of water vapor in the air, that is, the mass of water vapor per unit volume of air. Due to the difficulty of directly measuring the density of water vapor in the air, and the pressure of water vapor increases with the increase of water vapor density, the humidity of the air is usually expressed by the pressure of water vapor in the air, which is the humidity of the air.
2. Relative humidity
(1) Introduction of concept: The concept of relative humidity is introduced to represent the distance of water vapor from saturation in the air
(2) Relative humidity B: The percentage of the humidity p of the air at a certain temperature to the saturated vapor pressure ps of water at the same temperature is called the relative humidity of the air at that time
① The saturated vapor pressure of water at different temperatures can be obtained from a table
② When the humidity p remains constant and the temperature decreases, the relative humidity of the air increases due to the decrease in the saturated vapor pressure of water.
③ The relative humidity of the living room is more suitable at 60% to 70%
Product features of DelmhorstJ-2000 digital wood hygrometer from the United States:
Measure humidity using the impedance measurement method with the highest accuracy using *
Can calculate the average of up to 100 cumulative data points
Humidity measurement range 6% -40%
Built in corrections for 48 different tree species
Built in Fahrenheit and Celsius temperature compensation
It is very convenient to operate with one hand
digital readout
Using a 9V battery
Adopting mature microprocessor control circuits
Comes with a portable carrying case