How to Properly Calibrate Your Constant Temperature and Humidity Test Chamber

Calibrating the temperature of a constant temperature and humidity test chamber is a preparatory task before testing. So, how can you ensure proper calibration of the test equipment? Only after adjusting the temperature of the chamber can testing proceed normally.

Calibration without load:
When the chamber is unloaded, calibration can be performed across the entire working area inside the chamber. This allows for an accurate evaluation of the equipment, eliminating the need for recalibration after changing test samples.

Calibration under no-load conditions:
During this process, the entire working area inside the chamber is calibrated. The measurement points for temperature and humidity should typically include the upper and lower critical values of the equipment’s operating range, as well as the center point. Alternatively, users may select commonly used temperature and humidity points based on practical needs.

Measurement point setup:

For chambers with a volume less than 2 cubic meters:
Humidity points: 3
Temperature points: 9
For chambers with a volume greater than 2 cubic meters:
Humidity points: 4
Temperature points: 15
If the equipment is calibrated under load, the load conditions should be specified in the calibration certificate. In such cases, recalibration is unnecessary when changing test samples, and the suitability of the equipment can be accurately assessed.

Real-time measurement calibration:
This method provides comprehensive parameters of the test specimen during the inspection process and is typically used for products with stringent environmental requirements.

The above outlines the calibration process for constant temperature and humidity test chambers. We hope this information proves helpful. These chambers are primarily used for reliability testing of industrial products under high and low temperatures, evaluating the performance of components and materials from industries such as electronics, automotive, aerospace, research institutions, and military applications under alternating high and low-temperature conditions.

After prolonged use, the chamber should be recalibrated to maintain reliability and ensure optimal performance. For more details on testing equipment, visit the Linpin Instruments website, where we provide up-to-date information.