Yudian AI-dry and wet bulb temperature and humidity control instrument in plastic greenhouse mushroom room application introduction
2020-02-14 08:07:01
Yudian AI-dry and wet bulb temperature and humidity digital display control alarm communication instrument (dedicated for high humidity environment)
Yudian: dry and wet bulb temperature and humidity digital display control alarm communication instrument (dedicated for high humidity environment)
Model: AI-702MAJ0J0L5L5S (two PT100 inputs, four alarm outputs, communication function. Suitable for environmental laboratories.)
AI-702MAJ0J0L5I5I5S (two PT100 input, two-way alarm output, four-way digital input (display animation status), communication function. Suitable for plastic greenhouse mushroom room.)
First, the characteristics of dry and wet bulb hygrometer:
1. This series of products has high temperature and humidity measurement accuracy, dual-channel control function and good control effect.
2, the use of Pt100 sensor as a temperature and humidity measurement probe has a long service life, can adapt to temperature and humidity measurement in harsh environments; the long-term measurement accuracy of the instrument is more stable than the instrument using general humidity sensor.
3. This series of instruments is designed for temperature and humidity measurement and control in high temperature and high humidity environments.
Second, the application:
1. Nature Environment Laboratory: Because the environmental laboratory simulates the natural environment for many years, the sun and rain can operate normally in high humidity conditions, showing temperature and humidity, with upper and lower temperature alarms, upper and lower humidity alarms, and 4 independent alarm outputs. It has stable communication function, uses computer software to record temperature and humidity curve, observe environmental changes in natural environment laboratory, observe the growth of crops, cooperate with other wind speed sensors and air pressure sensors, and all signals can be saved by computer.
2, plastic greenhouse mushroom room: due to the characteristics of the mushroom room, the humidity is close to the exposed state [sensitive components can not be displayed normally, there is no humidity display when exposed to the dew], the application of dry and wet bulb temperature and humidity instrument can display the temperature and humidity normally, realize the automatic temperature and humidity meter The control output switch quantity controls humidification and ventilation, and the fan operation state switch quantity signal has temperature and humidity meter collection and transmission to the computer to record the temperature and humidity curve, and the fan starts and stops.
Third, the use of:
Using the 2-way three-wire Pt100 RTD input, the ambient temperature (dry bulb) and humidity can be measured simultaneously by the dry and wet bulb method. Under the condition of wind speed and atmospheric pressure stability, the humidity measurement accuracy after calibration is better than 1% RH. It can adapt to the measurement range of temperature 0~100 degree and humidity 0~100%RH, which solves the problem that the general ceramic humidity sensor can't work for a long time under high temperature and high humidity. M1 and M2 are respectively equipped with two J0 modules, two 3-wire RTD inputs, Sn1 is set to 22, Sn2 is set to 42, and atmospheric pressure and wind speed are defined by two parameters of Po and SPEd. Since the small errors of the two Pt100 and the measurement channel will bring a large error to the humidity measurement, it is recommended to calibrate the humidity before measuring the humidity. The calibration can also wrap the dry ball Pt100 on the gauze, which is equivalent to the wet ball. The Sc2 parameter is such that the humidity display value is 100%, and then the dry ball gauze is removed. The temperature measurement resolution is 0.01 degrees, the humidity measurement resolution is 0.1% RH, but the last digit is unstable. It is recommended to set dIP1=1, dIP2=0, so that the display resolution is 0.1°C and 1%RH respectively.
Fourth, maintenance introduction:
According to the "International Standard Dry and Wet Bulb Calculation Table" dry and wet ball method to measure the humidity calculation formula, calculate the relative humidity of the air, use the indirect measurement method with five parameters; the wet speed around the wet ball (also known as the air velocity flowing through the wet ball surface) Designed for dry bulb temperature, wet bulb temperature, atmospheric pressure, and saturated water vapor pressure.
The maintenance of the wet and dry ball moisture measurement method is quite simple. In actual use, it is only necessary to periodically add water to the wet ball and replace the wet ball gauze. Compared with the electronic humidity sensor, the wet and dry ball wet method does not cause aging, and the accuracy is lowered. Therefore, the wet and dry ball moisture measuring method is more suitable for use in high temperature and harsh environments.
The wet and dry ball moisture measurement method adopts an indirect measurement method, and the humidity value is calculated by measuring the temperature of the dry bulb and the wet bulb. Therefore, there is no strict limit on the use temperature, and the humidity measurement in the high temperature environment does not cause damage to the sensor.
As early as the 18th century, humans invented the wet and dry bulb hygrometer, which has a long history and is most commonly used. The dry and wet bulb method is an indirect method that converts the humidity value by the dry and wet bulb equation, and the equation is conditional: the accuracy of the wet and dry bulb hygrometer depends on the dry bulb and the wet bulb. Accuracy; the hygrometer must be in a ventilated state, that is, the wind speed near the wet ball must reach 2.5 m/s or more: the specified accuracy can be achieved only when the gauze water jacket, water quality, and wind speed meet certain requirements.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
Yudian: dry and wet bulb temperature and humidity digital display control alarm communication instrument (dedicated for high humidity environment)
Model: AI-702MAJ0J0L5L5S (two PT100 inputs, four alarm outputs, communication function. Suitable for environmental laboratories.)
AI-702MAJ0J0L5I5I5S (two PT100 input, two-way alarm output, four-way digital input (display animation status), communication function. Suitable for plastic greenhouse mushroom room.)
First, the characteristics of dry and wet bulb hygrometer:
1. This series of products has high temperature and humidity measurement accuracy, dual-channel control function and good control effect.
2, the use of Pt100 sensor as a temperature and humidity measurement probe has a long service life, can adapt to temperature and humidity measurement in harsh environments; the long-term measurement accuracy of the instrument is more stable than the instrument using general humidity sensor.
3. This series of instruments is designed for temperature and humidity measurement and control in high temperature and high humidity environments.
Second, the application:
1. Nature Environment Laboratory: Because the environmental laboratory simulates the natural environment for many years, the sun and rain can operate normally in high humidity conditions, showing temperature and humidity, with upper and lower temperature alarms, upper and lower humidity alarms, and 4 independent alarm outputs. It has stable communication function, uses computer software to record temperature and humidity curve, observe environmental changes in natural environment laboratory, observe the growth of crops, cooperate with other wind speed sensors and air pressure sensors, and all signals can be saved by computer.
2, plastic greenhouse mushroom room: due to the characteristics of the mushroom room, the humidity is close to the exposed state [sensitive components can not be displayed normally, there is no humidity display when exposed to the dew], the application of dry and wet bulb temperature and humidity instrument can display the temperature and humidity normally, realize the automatic temperature and humidity meter The control output switch quantity controls humidification and ventilation, and the fan operation state switch quantity signal has temperature and humidity meter collection and transmission to the computer to record the temperature and humidity curve, and the fan starts and stops.
Third, the use of:
Using the 2-way three-wire Pt100 RTD input, the ambient temperature (dry bulb) and humidity can be measured simultaneously by the dry and wet bulb method. Under the condition of wind speed and atmospheric pressure stability, the humidity measurement accuracy after calibration is better than 1% RH. It can adapt to the measurement range of temperature 0~100 degree and humidity 0~100%RH, which solves the problem that the general ceramic humidity sensor can't work for a long time under high temperature and high humidity. M1 and M2 are respectively equipped with two J0 modules, two 3-wire RTD inputs, Sn1 is set to 22, Sn2 is set to 42, and atmospheric pressure and wind speed are defined by two parameters of Po and SPEd. Since the small errors of the two Pt100 and the measurement channel will bring a large error to the humidity measurement, it is recommended to calibrate the humidity before measuring the humidity. The calibration can also wrap the dry ball Pt100 on the gauze, which is equivalent to the wet ball. The Sc2 parameter is such that the humidity display value is 100%, and then the dry ball gauze is removed. The temperature measurement resolution is 0.01 degrees, the humidity measurement resolution is 0.1% RH, but the last digit is unstable. It is recommended to set dIP1=1, dIP2=0, so that the display resolution is 0.1°C and 1%RH respectively.
Fourth, maintenance introduction:
According to the "International Standard Dry and Wet Bulb Calculation Table" dry and wet ball method to measure the humidity calculation formula, calculate the relative humidity of the air, use the indirect measurement method with five parameters; the wet speed around the wet ball (also known as the air velocity flowing through the wet ball surface) Designed for dry bulb temperature, wet bulb temperature, atmospheric pressure, and saturated water vapor pressure.
The maintenance of the wet and dry ball moisture measurement method is quite simple. In actual use, it is only necessary to periodically add water to the wet ball and replace the wet ball gauze. Compared with the electronic humidity sensor, the wet and dry ball wet method does not cause aging, and the accuracy is lowered. Therefore, the wet and dry ball moisture measuring method is more suitable for use in high temperature and harsh environments.
The wet and dry ball moisture measurement method adopts an indirect measurement method, and the humidity value is calculated by measuring the temperature of the dry bulb and the wet bulb. Therefore, there is no strict limit on the use temperature, and the humidity measurement in the high temperature environment does not cause damage to the sensor.
As early as the 18th century, humans invented the wet and dry bulb hygrometer, which has a long history and is most commonly used. The dry and wet bulb method is an indirect method that converts the humidity value by the dry and wet bulb equation, and the equation is conditional: the accuracy of the wet and dry bulb hygrometer depends on the dry bulb and the wet bulb. Accuracy; the hygrometer must be in a ventilated state, that is, the wind speed near the wet ball must reach 2.5 m/s or more: the specified accuracy can be achieved only when the gauze water jacket, water quality, and wind speed meet certain requirements.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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