What Factors Ensure Optimal Performance in Environmental Test Chambers?

Test Chamber Clearance:

The chamber should be installed in a safe environment with access to facility power and have at least 12-18 inches of clearance in front and rear for ventilation. In the front, the clearance allows for a complete open-door swing. The sides and rear allow for air exhaust and ventilation across the air—called condensers. The chamber should also sit on a flat, hard surface.

Proper Airflow in the Chamber:

Proper ventilation and airflow are crucial factors to consider for the optimal performance of your test chamber. Without sufficient ventilation, the chamber may not operate correctly, leading to inaccurate test results and potential equipment damage. Maintaining consistent temperature and humidity levels is essential for the chamber to control the testing environment effectively. Insufficient airflow can cause fluctuations in temperature and humidity, impacting the accuracy of the tests. Additionally, poor ventilation can result in the accumulation of heat and moisture, potentially causing harm to both the chamber and the test samples.

It is also important to pay attention to the airflow within the test chamber itself. The chamber's integrated blower or fan plays a key role in ensuring a uniform environment and preventing the formation of hot or cold spots. The fan or blower should have the right balance of power to circulate air effectively without disturbing the samples being tested.

Ambient Lab Conditions:

The ideal ambient temperature conditions for test chambers is 23°C (73.4°F). The temperature and humidity range of assured performance is between 15°C and 25°C (59°F and 77°F) and 30-50% relative humidity. Conditions outside this range may affect the performance of your test chamber and reduce the lifespan of the equipment.

Product to Test Ratio:

For many tests, the suggested ratio of product volume to the total workspace is around one to three. This proportion allows for adequate airflow to the device under test (DUT) and ensures complete conditioning.

Preventative Maintenance:

Preventative maintenance is crucial to ensuring the longevity of your chamber. Take a look at our other knowledge base articles regarding preventative maintenance for your chamber. You can also have an AES service engineer come out and perform preventative maintenance and a calibration every 6 months to a year, depending on your chamber usage, to keep your chamber running for 10-plus years.