Constant temperature and humidity test chamber, which named constant temperature and humidity machine. It is needed for testing equipment in many different fields such as automotive, scientific research and aerospace. It can test and determine different materials and products such as electricians and electronics. Moreover, it can simulate high/ low temperature, alternating humidity, or constant temperature environments. In a specific environment, test the parameters and performance of the product.
Model Distinction
Constant temperature and humidity test chamber can divide into “desktop” and “vertical”. Their main difference is that they can realize different temperatures and humidity. Vertical can do the low temperature below room temperature and dry. Benchtop can only do the temperature above room temperature and high humidity.
Working principle
Regulating temperature and regulating humidity are very important parts of a constant temperature and humidity test chamber. Temperature control is mainly manifested in cooling and warming.First, a rotating fan, mounted on top of the box, exhausts air into the box.This helps to circulate the gas. It also balances the humidity and temperature inside the environmental chamber.The box’s built-in humidity and temperature sensors collect data.The humidity and temperature controllers then edit and process the data. Finally, the temperature and humidity change instructions are given.
Constant temperature and humidity test chambers are capable of controlling the desired humidity and temperature.On the one hand, raising the temperature is generally done by turning on the air heater.Lowering the temperature inside the box is achieved by adjusting the refrigeration solenoid valve.At the same time, increasing the humidity in the tank is achieved by evaporating the water in the tank. And adjust the refrigeration solenoid valve to realize the dehumidifying effect.
A constant temperature and humidity chamber is equipped with many protection measures. Meanwhile, it is also fitted with an over-temperature protector.The temperature system can be set to a significant and safe allowable temperature. Moreover, once you stop rotating the fan, the air heating element automatically powers down.The refrigeration system stops as temperature rises (over 40°C) or humidity increases.
AtmoExplorer Temperature & Humidity Chamber System Structure
In the box structure, it is a CNC machine tool processing molding. Moreover, the modeling is beautiful and novel. It adopts an embedded non-reactive plane handle, which is easy to operate. The outer chamber is made of a cold-rolled plate with powdered baking paint. Likewise, the inner box is made of a matte stainless steel plate (SUS#304). Meanwhile, the insulation material is made of hard Polyurethane foam + glass wool.
The box body and the inner liner fill with ultra-fine insulation cotton. The insulation effect is good, reducing the temperature fluctuation rate in the chamber. Coupled with anti-aging silicone rubber sealing strip sealing, it’s without fog leakage phenomenon. Multi-layer toughened glass viewing window for easy observation of the test situation. In addition, the observation windows are individually illuminated.These are good for providing a good observation field and keeping an eye on the status of the test.Adopt the original imported touch screen. At the same time, the 7-inch large screen can switch between Chinese and English. The programmable controller can key for more convenient operation. The LCD liquid crystal display can be dimmed as needed.
Constant temperature and humidity test chambers are capable of controlling the desired humidity and temperature.On the one hand, raising the temperature is generally done by turning on the air heater.Lowering the temperature inside the box is achieved by adjusting the refrigeration solenoid valve.At the same time, increasing the humidity in the tank is achieved by evaporating the water in the tank. And adjust the refrigeration solenoid valve to realize the dehumidifying effect.
A constant temperature and humidity chamber is equipped with many protection measures. Meanwhile, it is also fitted with an over-temperature protector.The temperature system can be set to a significant and safe allowable temperature. Moreover, once you stop rotating the fan, the air heating element automatically powers down.The refrigeration system stops as temperature rises (over 40°C) or humidity increases.
AtmoExplorer Temperature & Humidity Chamber Control System
The core of the environmental test chamber is the control system. It is in charge of refrigeration, heating, humidity control, circulation, and other powers.
Refrigeration system
Omit refrigeration, the compressor is the original imported compressor. The refrigeration system is mainly divided into a low-temperature section and a high-temperature section. At the same time, each part is an independent refrigeration system. It is the high temperature part that absorbs heat from the low temperature part to evaporate the refrigerant. It is the low-temperature part that absorbs heat from the air in the environmental chamber to obtain coldness. Evaporative condensers are linked by a low-temperature section and a high-temperature section. It can be used as a condenser for both the low and high temperature sections.
Heating system:
The heating system adopts a completely independent spring-type nickel-chromium electric heating wire. This electric heating wire has large resistivity and a small resistance temperature coefficient. And it has small deformation under high temperatures and is not easy to be brittle, long service life. At the same time, it heats itself to 1000-1500℃.
Humidification system:
It uses the stainless steel electro-thermal steam generation method of a UL-shaped humidifier. In order to achieve a reduction in humidity. A dehumidification method that uses mechanical refrigeration to remove moisture. That is, cooling the air to below the dew point temperature. Therefore water vapor will condense and precipitate if it is greater than the saturated water content.
Air supply and circulation system:
It consists of a louvered air supply circulation system and multi-winged wind turbines. Besides, it provides circulation of air within the tester.
Control System:
The most important part of the environmental test chamber is the control system. It determines the warming rate, precision, and other important indexes of the tester. The controllers of our environmental test chambers are PID-controlled. Since control systems are a software category. Generally speaking,using the general has no problems.
AtmoExplorer Temperature & Humidity Chamber Operation
Environmental test chambers cannot operate without the operation of three systems. These three systems are refrigerant circulation, air circulation and electrical automatic control system.
Constant temperature and humidity test chamber refrigerant circulation system:
By absorbing heat from the air, the refrigerant in the evaporator evaporates. Eventually there will be a temperature difference between the refrigerant and the air.As a result, the refrigerant is converted from a liquid to a gaseous state. And then the compressor is inhaled and compressed. Heat is absorbed through the condenser and the refrigerant is condensed from a gaseous state to a liquid state.Because of the throttling of the expansion valve, the refrigerant becomes low-pressure, low-temperature and then enters the evaporator.The refrigerant cycle is finally completed.
Constant temperature and humidity test chamber air ring system:
The fan handles the air from the return air inlet. The air passes through the evaporator, humidifier, and electric heater. It is then fed into the space through the air supply.The air sent out will mix with the air in the space. The mixed politeness is then returned to the return air outlet.
Constant temperature and humidity test chamber electrical automatic control system:
Constant temperature and humidity chamber by the automatic control composition and power supply.Power supply parts through contactor, compressor, fan, humidifier, and so on supply power. Humidity control, temperature control and fault protection form the automatic control.The wet and temperature controller is to control the wet and temperature.The return air temperature and humidity compare the user-set temperature and humidity. To constant temperature and humidity automatic control. Automatic operation of the compressor, humidifier, electric heating, and other components.
Conclusion
Constant Temperature and Humidity Chamber judges product quality by detecting temperature and humidity. Detecting the performance of samples in specific environments. As well as detecting what drawbacks exist in the sample, and what can improve, so on improve the product.
This chamber can provide a wide range of different temperature environments.This provides great convenience for doing product development. We can view the changes in the sample over time at different temperatures in a small space. It can test the stability of samples and what happens to samples when they are hot or cold. Thus determining their performance under these conditions. This type of testing ensures that the product is stable for use in our environment.
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