How does the software of the constant temperature and humidity test chamber system work?

The operation of the system software of the constant temperature and humidity test chamber is based on three mutual system software: refrigerant respiration system, gas respiration system, and household appliance automatic control system software.

1. Refrigerant respiration system of constant temperature and humidity test chamber.

The liquid refrigerant in the air conditioner evaporator digests and absorbs the calorific value of the gas (the gas is desuperheated and dehumidified) and just begins to volatilize, and a certain temperature difference occurs between the refrigerant and the air, and the liquid refrigerant also completely volatilizes into a vapor state, and then is sucked in and reduced by the refrigeration compressor (working pressure and temperature increase), and the vapor refrigerant digests and absorbs the calorific value according to the cooler (air-cooled water cooling heat dissipation) and solidifies into a liquid. According to the throttle valve of the expansion valve (or capillary) of the air conditioner, it becomes a low-temperature bottom pressure refrigerant and enters the air conditioner evaporator to carry out the whole process of the refrigerant circulation system.

2. Constant temperature and humidity test chamber ** gas ring system software.

The centrifugal fan undertakes to suck the gas from the air supply outlet, and the gas is sent to the indoor space required by the customer through the air conditioning evaporator (desuperheating and dehumidification), the air humidifier, and the electric heating device (temperature increase), and the gas sent out is mixed with the gas in the indoor space and returned to the air supply outlet.

3. Constant temperature and humidity test chamber ** household appliance automation control system software.

Including power supply part and automatic control part.

The power supply part is divided into temperature and humidity control and fault protection part through the contactor, and the automatic control of the power supply is divided into temperature and humidity control and fault protection parts: temperature and humidity control is through the temperature and humidity controller, and the temperature and humidity of the return air are compared with the temperature and humidity set by the user, and the compressor (cooling, dehumidification), humidifier, electric heating (heating) and other components are automatically operated to achieve automatic control of constant temperature and humidity.

Through three interconnected systems: refrigerant circulation system, air circulation system, electrical automatic control system.

1. Refrigerant circulation system of constant temperature and humidity test chamber: the liquid refrigerant in the evaporator absorbs the heat of the air (the air is cooled and dehumidified) and begins to evaporate, and finally a certain temperature difference is formed between the refrigerant and the air, and the liquid refrigerant is completely evaporated into a gaseous state, and then sucked in and compressed by the compressor (pressure and temperature increase), and the gaseous refrigerant absorbs heat through the condenser (air cooled and water cooled) and condenses into a liquid. After throttling through the expansion valve (or capillary), it becomes a low-temperature and low-pressure refrigerant into the evaporator to complete the refrigerant circulation process.

2. Constant temperature and humidity test chamber air ring system: the fan is responsible for inhaling the air from the return air outlet, and the air is sent to the space required by the user through the air supply outlet after passing through the evaporator (cooling and dehumidification), humidifier and electric heater (heating), and the air sent out is mixed with the air in the space and returned to the return air outlet.

3. Constant temperature and humidity test chamber electrical automatic control system:

Including power supply part and automatic control part.

The power supply part is divided into temperature and humidity control and fault protection part through the contactor, and the automatic control of the power supply is divided into temperature and humidity control and fault protection parts: temperature and humidity control is through the temperature and humidity controller, and the temperature and humidity of the return air are compared with the temperature and humidity set by the user, and the compressor (cooling, dehumidification), humidifier, electric heating (heating) and other components are automatically operated to achieve automatic control of constant temperature and humidity.

Constant temperature and humidity test chamber system software, its mode of operation is according to his conditions, as well as according to some of his operating methods to operate the movement.

The lognormal random walk theory based on Brownian motion has gradually become a classic framework for financial markets, and has also laid the foundation for the development of quantitative finance in the future.

Modern Portfolio Theory (MPT).

In 1952, the American economist Harry M Markowitz (Harry M Markowitz) in his academic ** "Asset Selection: Effective Diversification", for the first time applied the two mathematical concepts of mean and variance of portfolio returns, mathematically clearly defined investor preferences, and explained the principle of investment diversification in a mathematical way, systematically expounded the problem of asset portfolio and selection, marking the modern portfolio theory (Modern portfolio theory, abbreviated as MPT). The theory is that a portfolio can reduce unsystematic risk, a portfolio is determined by the composition of each ** and its weight, and the selection of uncorrelated ** should be the goal of constructing a portfolio.

It was the first to put forward the concept of risk on the basis of traditional investment returns, believing that risk, rather than return, is the focus of the entire investment process, and proposed a method of portfolio optimization, for which Markowitz was awarded the Nobel Prize in Economic Sciences in 1990.

Because modern portfolio theory makes many idealized assumptions that do not exist in the real market, it cannot be universally applied.

Constant temperature and humidity test chamber system software operation tutorial.

Type " in Run, and when you type "services", double-click on the imapi cd-burning com servie service and change the "boot type" to "auto".(Restart the computer) 2. After the computer restarts, the burner properties are more "burning", click to enter, and check "Enable CD recording of this device". Put a blank disk in it, right-click on the properties on the disk character, you can see the available space, double-click, you can go in, this is almost.

Figure 4. Take Nero with you and everything is ready.

The setting up of the constant temperature and humidity test chamber is actually very simple. First, you need to determine the temperature and humidity range you want. Then, according to the instructions of the test chamber or the operating manual, you can find the corresponding setting parameters.

Typically, a test chamber will have a control panel with various buttons and adjustment knobs. With these control buttons and knobs, you can select and set the temperature and humidity of the chamber to start traveling. Make sure you're following the correct steps to set it up and staying safe at all times.

When you start the setup, first press the power switch, then adjust the temperature and humidity knobs to the absolute values you want to set. Some chambers may have other setting options, such as a timer function or an alarm function, which you can set as you wish. Once the setup is complete, wait for the chamber to reach the set temperature and humidity.

During this process, you can use the temperature and humidity display of the chamber to monitor the status of the chamber and make sure it is working properly.

Finally, if you are unsure about the setup of the test chamber, or have other questions, do not hesitate to consult the manufacturer of the test chamber or relevant professionals. They will have more detailed and accurate guidance. Good luck with the use of the test chamber!

It is to be able to keep the temperature and humidity you set constant, and the fluctuation is less than plus or minus.

Nanjing Wuhe Test Equipment Co., Ltd. specializes in the production of various types of test and testing equipment 025-84950070

When the programmable constant temperature and humidity test chamber completes the low-temperature operation, it is best to dry the chamber door after about 30 minutes at 60 o'clock, so as not to affect the measurement time of the subsequent test or cause the phenomenon of evaporator freezing;

When operating the programmable high and low temperature testing machine, unless it is necessary to open it as a last resort, please do not open the door casually, otherwise it may cause the following adverse consequences:

The inside of the door is still kept at high temperature, the high temperature air may trigger the fire alarm and cause errors, the high temperature and moisture rush out of the box, and the switch box body has certain damage to the compressor during the experiment, unless the test requires, it is not recommended that the customer open and close frequently during the experiment.

When using a constant temperature and humidity chamber.

It must be guaranteed to be safe and accurate grounding, so as not to produce electrostatic inductance; Circuit breakers and over-temperature protectors, which provide test products and personal safety of operators, must be regularly inspected in detail; Wet spherical yarn.

The installation position of the cloth must be accurate in order to measure the correct relative humidity; When the box is in operation, please do not check it by hand to avoid electric shock or injury by the fan.

Non-local staff are not allowed to repair and inspect the programmable high and low temperature damp heat test chamber. And during the inspection, in addition to full-time personnel, there are also professional electricians and circuit maintenance personnel to prevent unwitting personnel from energizing and closing, thus causing the risk of electric shock.

I also saw it on Ruikai Instrument Company**, borrowing flowers to offer Buddha to bring your questions.