What is a humidity test chamber?
Humidity test chambers are used to test the performance of products, materials and components by precisely controlling the temperature and humidity in confined Spaces and simulating the real environment. humid chambers come in a variety of sizes, from small benchtop units (volume 1 cubic foot or less) to large walk in humidity chamber.
For handheld electronic devices, such as mobile phones, humidity testing is particularly important. Mobile phones need to work properly in a variety of environments, from desert climates to climates close to the ocean.
Some common standards that require humidity components are:
The RTCA DO-160 standard uses humidity to assess the thermal expansion of materials in the aerospace industry and requires extreme temperature change testing.
GR-1081 Test procedures for optical fibers are specified in the telecommunications industry.
MIL-STD-810 is a standard developed by the United States Department of Defense to evaluate the performance of devices under a variety of environmental conditions and to identify any weaknesses in devices.
The International Electrotechnical Commission (IEC) has developed testing requirements for electrical, electronic and related technologies (such as power generation, semiconductors and fiber optics) in the following industries: batteries, solar energy, nanotechnology, ocean energy, etc.
SAE International develops and improves standards for companies in the aerospace, commercial vehicle and automotive engineering sectors.
The International Safe Transportation Association (ISTA) has set standards for the packaging industry to minimize product damage during distribution.
Standard temperature range: -37°C to +180°C (-34.6°F to 356°F) | -70°C to +180°C (-94°F to 356°F)
Accuracy: ±0.5℃
Water cooling systems are faster and more energy efficient, but they require a specialized water source and are more complex to install.
You can also choose supercharge cooling, using liquid nitrogen (N2) or carbon dioxide (CO2) for faster cooling rates, especially for pressure tests that require rapid cooling. Even without booster cooling, AES standard cascade refrigeration systems have the highest standard cooling rates of any environmental test chamber manufacturer.
The system is capable of producing between 10% and 98% of standard relative humidity (RH).
Dry nitrogen purging can expel moist air and prevent condensation and frost from accumulating on the surface of the test sample at low temperatures. This also prevents the metal from oxidizing at high temperatures.
For large test chambers, circulating desiccant air dryers are a more economical option. The air is circulated through the desiccant system and then back to the test chamber, usually circulating through the honeycomb wheel to release the captured moisture into the external work space.
As wide as the range of industries that use test chambers is, the way companies conduct testing varies. It's almost certain that no two companies have exactly the same testing requirements, but they all have one thing in common: they all need test chambers that can precisely control the conditions under which they are tested.
For humidity testing, this means a reliable water source, accurate readings (temperature ±0.5°C and +/- 2%RH), and the ability to reach extreme conditions if necessary.
JOEO has earned a reputation as a leading manufacturer of environmental test chambers by optimizing every aspect of the chamber. Its temperature and humidity test chamber models meet your needs for high performance and control.
JOEO understands how critical testing is to your company's success. Our humidity rooms are matched by the effort, research and ingenuity you put into your products. Here is some essential information about the humidity chamber.
Function of humidity test chamber
Humid chambers play a vital role in many industries. Humidity is a key element of environmental testing, and by simulating real environmental conditions, enterprises can find defects in products and determine the service life of products. This helps companies set reasonable warranty periods and usage expectations for consumers, including the right way to use them.For handheld electronic devices, such as mobile phones, humidity testing is particularly important. Mobile phones need to work properly in a variety of environments, from desert climates to climates close to the ocean.
Some common standards that require humidity components are:
The RTCA DO-160 standard uses humidity to assess the thermal expansion of materials in the aerospace industry and requires extreme temperature change testing.
GR-1081 Test procedures for optical fibers are specified in the telecommunications industry.
MIL-STD-810 is a standard developed by the United States Department of Defense to evaluate the performance of devices under a variety of environmental conditions and to identify any weaknesses in devices.
The International Electrotechnical Commission (IEC) has developed testing requirements for electrical, electronic and related technologies (such as power generation, semiconductors and fiber optics) in the following industries: batteries, solar energy, nanotechnology, ocean energy, etc.
SAE International develops and improves standards for companies in the aerospace, commercial vehicle and automotive engineering sectors.
The International Safe Transportation Association (ISTA) has set standards for the packaging industry to minimize product damage during distribution.
Temperature system
heating system
The JOEO test chamber's heating system is fully electric and utilizes ceramic core fast response, low watt-density resistance heaters to ensure long life, reliable operation and avoid downtime. The combination of airflow, instrument response and fast response heaters enables highly accurate and linear temperature control. The heating system supports temperatures up to 180°C (356°F) and the heater can be controlled independently or synchronously. The heating system is located in a ventilated room to avoid direct radiation to the test items.Standard temperature range: -37°C to +180°C (-34.6°F to 356°F) | -70°C to +180°C (-94°F to 356°F)
Accuracy: ±0.5℃
cooling system
The cooling system of the JOEO humidity test chamber uses a separate mechanical cooling system and is available in single or cascade configurations. You can choose between air cooling or water cooling. Air cooling is easy to install and low cost, but the cooling speed is slow.Water cooling systems are faster and more energy efficient, but they require a specialized water source and are more complex to install.
You can also choose supercharge cooling, using liquid nitrogen (N2) or carbon dioxide (CO2) for faster cooling rates, especially for pressure tests that require rapid cooling. Even without booster cooling, AES standard cascade refrigeration systems have the highest standard cooling rates of any environmental test chamber manufacturer.
air circulation
Air circulation is a key factor in environmental testing. TheJOEO test chamber features a proprietary baffle and fan design to ensure optimal temperature conditions in the workspace.Humidity system
JOEO humid chambers uses a steam generator system to precisely control the humidity conditions in the work space. The system consists of a closed stainless steel or copper tube that heats a constant temperature water source internally to produce steam. The steam passes through the pipes, mixes with the conditioned air in the ventilation chamber, and finally enters the work space. It is important to note that water sources need to be treated and desalted to avoid contamination testing.The system is capable of producing between 10% and 98% of standard relative humidity (RH).
Optional function to increase humidity range
Dry air purification can be achieved with desiccant air dryers that reduce humidity to 5% RH. The desiccant system compresses the air and absorbs moisture before it enters the work area.Dry nitrogen purging can expel moist air and prevent condensation and frost from accumulating on the surface of the test sample at low temperatures. This also prevents the metal from oxidizing at high temperatures.
For large test chambers, circulating desiccant air dryers are a more economical option. The air is circulated through the desiccant system and then back to the test chamber, usually circulating through the honeycomb wheel to release the captured moisture into the external work space.
Summary
Humidity test chambers play a vital role in many industries such as electronics, military and defense, pharmaceuticals, transportation, medical equipment, shipping, communications, and more.As wide as the range of industries that use test chambers is, the way companies conduct testing varies. It's almost certain that no two companies have exactly the same testing requirements, but they all have one thing in common: they all need test chambers that can precisely control the conditions under which they are tested.
For humidity testing, this means a reliable water source, accurate readings (temperature ±0.5°C and +/- 2%RH), and the ability to reach extreme conditions if necessary.
JOEO has earned a reputation as a leading manufacturer of environmental test chambers by optimizing every aspect of the chamber. Its temperature and humidity test chamber models meet your needs for high performance and control.
JOEO understands how critical testing is to your company's success. Our humidity rooms are matched by the effort, research and ingenuity you put into your products. Here is some essential information about the humidity chamber.
